diff --git a/NAMESPACE b/NAMESPACE
index 186dd4f..6c8c5d2 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -2,6 +2,7 @@
 
 export(pal_aaas)
 export(pal_bmj)
+export(pal_bs5)
 export(pal_cosmic)
 export(pal_d3)
 export(pal_flatui)
@@ -23,10 +24,12 @@ export(pal_startrek)
 export(pal_tron)
 export(pal_uchicago)
 export(pal_ucscgb)
+export(rgb_bs5)
 export(rgb_gsea)
 export(rgb_material)
 export(scale_color_aaas)
 export(scale_color_bmj)
+export(scale_color_bs5)
 export(scale_color_cosmic)
 export(scale_color_d3)
 export(scale_color_flatui)
@@ -50,6 +53,7 @@ export(scale_color_uchicago)
 export(scale_color_ucscgb)
 export(scale_colour_aaas)
 export(scale_colour_bmj)
+export(scale_colour_bs5)
 export(scale_colour_cosmic)
 export(scale_colour_d3)
 export(scale_colour_flatui)
@@ -73,6 +77,7 @@ export(scale_colour_uchicago)
 export(scale_colour_ucscgb)
 export(scale_fill_aaas)
 export(scale_fill_bmj)
+export(scale_fill_bs5)
 export(scale_fill_cosmic)
 export(scale_fill_d3)
 export(scale_fill_flatui)
diff --git a/R/continuous-bs5.R b/R/continuous-bs5.R
new file mode 100644
index 0000000..0f52c4c
--- /dev/null
+++ b/R/continuous-bs5.R
@@ -0,0 +1,153 @@
+#' Bootstrap 5 color palettes
+#'
+#' Bootstrap 5 color palettes.
+#'
+#' @param palette Palette type. There are 11 available options:
+#'   - `"blue"`
+#'   - `"indigo"`
+#'   - `"purple"`
+#'   - `"pink"`
+#'   - `"red"`
+#'   - `"orange"`
+#'   - `"yellow"`
+#'   - `"green"`
+#'   - `"teal"`
+#'   - `"cyan"`
+#'   - `"gray"`
+#' @param n Number of individual colors to be generated.
+#' @param alpha Transparency level, a real number in (0, 1].
+#'   See `alpha` in [grDevices::rgb()] for details.
+#' @param reverse Logical. Should the order of the colors be reversed?
+#'
+#' @export rgb_bs5
+#'
+#' @importFrom grDevices colorRamp rgb
+#' @importFrom scales manual_pal
+#'
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
+#'
+#' @references
+#' <https://getbootstrap.com/docs/5.3/customize/color/#all-colors>
+#'
+#' @examples
+#' library("scales")
+#' show_col(pal_bs5("indigo")(10))
+#' show_col(pal_bs5("indigo", n = 30, alpha = 0.6, reverse = TRUE)(30))
+rgb_bs5 <- function(
+    palette = c(
+      "blue", "indigo", "purple", "pink", "red", "orange", "yellow",
+      "green", "teal", "cyan", "gray"
+    ), n = 10, alpha = 1, reverse = FALSE) {
+  palette <- match.arg(palette)
+
+  if (alpha > 1L || alpha <= 0L) stop("alpha must be in (0, 1]")
+
+  raw_cols <- ggsci_db$"bs5"[[palette]]
+  func_cols <- colorRamp(raw_cols, space = "Lab", interpolate = "spline")
+  mat_cols <- func_cols(seq(0L, 1L, length.out = n))
+  alpha_cols <- rgb(
+    mat_cols[, 1L], mat_cols[, 2L], mat_cols[, 3L],
+    alpha = alpha * 255L, maxColorValue = 255L
+  )
+
+  if (reverse) alpha_cols <- rev(alpha_cols)
+
+  alpha_cols
+}
+
+#' Bootstrap 5 color palettes
+#'
+#' Bootstrap 5 color palettes.
+#'
+#' @inheritParams rgb_bs5
+#'
+#' @export pal_bs5
+#'
+#' @importFrom scales manual_pal
+#'
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
+#'
+#' @examples
+#' library("scales")
+#' show_col(pal_bs5("indigo")(10))
+#' show_col(pal_bs5("indigo", n = 30, alpha = 0.6, reverse = TRUE)(30))
+pal_bs5 <- function(
+    palette = c(
+      "blue", "indigo", "purple", "pink", "red", "orange", "yellow",
+      "green", "teal", "cyan", "gray"
+    ), n = 10, alpha = 1, reverse = FALSE) {
+  palette <- match.arg(palette)
+
+  alpha_cols <- rgb_bs5(palette, n, alpha, reverse)
+  manual_pal(unname(alpha_cols))
+}
+
+#' Bootstrap 5 color scales
+#'
+#' See [pal_bs5()] for details.
+#'
+#' @inheritParams pal_bs5
+#' @param ... Additional parameters for [ggplot2::discrete_scale()].
+#'
+#' @export scale_color_bs5
+#'
+#' @importFrom ggplot2 scale_color_gradientn
+#'
+#' @author Nan Xiao | \email{me@nanx.me} | <https://nanx.me>
+#'
+#' @rdname scale_bs5
+#'
+#' @examples
+#' library("ggplot2")
+#'
+#' data("mtcars")
+#' cor <- abs(cor(mtcars))
+#' cor_melt <- data.frame(
+#'   Var1 = rep(seq_len(nrow(cor)), times = ncol(cor)),
+#'   Var2 = rep(seq_len(ncol(cor)), each = nrow(cor)),
+#'   value = as.vector(cor)
+#' )
+#'
+#' ggplot(
+#'   cor_melt,
+#'   aes(x = Var1, y = Var2, fill = value)
+#' ) +
+#'   geom_tile(colour = "black", size = 0.3) +
+#'   theme_bw() +
+#'   scale_fill_bs5("teal")
+scale_color_bs5 <- function(
+    palette = c(
+      "blue", "indigo", "purple", "pink", "red", "orange", "yellow",
+      "green", "teal", "cyan", "gray"
+    ), alpha = 1, reverse = FALSE, ...) {
+  palette <- match.arg(palette)
+  scale_color_gradientn(
+    colours = rgb_bs5(
+      palette,
+      n = 512, alpha = alpha, reverse = reverse
+    ),
+    ...
+  )
+}
+
+#' @export scale_colour_bs5
+#' @rdname scale_bs5
+scale_colour_bs5 <- scale_color_bs5
+
+#' @export scale_fill_bs5
+#' @importFrom ggplot2 scale_fill_gradientn
+#' @rdname scale_bs5
+scale_fill_bs5 <- function(
+    palette = c(
+      "blue", "indigo", "purple", "pink", "red", "orange", "yellow",
+      "green", "teal", "cyan", "gray"
+    ), alpha = 1, reverse = FALSE, ...) {
+  palette <- match.arg(palette)
+  scale_fill_gradientn(
+    colours = rgb_bs5(
+      palette,
+      n = 512, alpha = alpha, reverse = reverse
+    ),
+    ...
+  )
+}
diff --git a/R/continuous-material.R b/R/continuous-material.R
index b11b677..0f420af 100644
--- a/R/continuous-material.R
+++ b/R/continuous-material.R
@@ -1,6 +1,6 @@
 #' Material Design color palettes
 #'
-#' The Material Design 2 color palettes.
+#' Material Design 2 color palettes.
 #'
 #' @param palette Palette type. There are 19 available options:
 #'   - `"red"`
@@ -17,15 +17,11 @@
 #'   - `"lime"`
 #'   - `"yellow"`
 #'   - `"amber"`
-#'   - `"orange"`,
+#'   - `"orange"`
 #'   - `"deep-orange"`
 #'   - `"brown"`
 #'   - `"grey"`
 #'   - `"blue-grey"`
-#'
-#'   For details, see [Material Design color
-#'   system](https://m2.material.io/design/color/the-color-system.html).
-#'
 #' @param n Number of individual colors to be generated.
 #' @param alpha Transparency level, a real number in (0, 1].
 #'   See `alpha` in [grDevices::rgb()] for details.
@@ -70,7 +66,7 @@ rgb_material <- function(
 
 #' Material Design color palettes
 #'
-#' The Material Design 2 color palettes.
+#' Material Design 2 color palettes.
 #'
 #' @inheritParams rgb_material
 #'
@@ -96,7 +92,7 @@ pal_material <- function(
   manual_pal(unname(alpha_cols))
 }
 
-#' Material Design color palettes
+#' Material Design color scales
 #'
 #' See [pal_material()] for details.
 #'
diff --git a/R/palettes.R b/R/palettes.R
index 239334c..4539f31 100644
--- a/R/palettes.R
+++ b/R/palettes.R
@@ -350,6 +350,95 @@ ggsci_db$"gsea"$"default" <- c(
   "Flamingo" = "#EF4040", "GuardsmanRed" = "#D60C00"
 )
 
+# Bootstrap 5 color palettes
+ggsci_db$"bs5"$"blue" <- c(
+  "blue-100" = "#cfe2ff", "blue-200" = "#9ec5fe",
+  "blue-300" = "#6ea8fe", "blue-400" = "#3d8bfd",
+  "blue-500" = "#0d6efd", "blue-600" = "#0a58ca",
+  "blue-700" = "#084298", "blue-800" = "#052c65",
+  "blue-900" = "#031633"
+)
+
+ggsci_db$"bs5"$"indigo" <- c(
+  "indigo-100" = "#e0cffc", "indigo-200" = "#c29ffa",
+  "indigo-300" = "#a370f7", "indigo-400" = "#8540f5",
+  "indigo-500" = "#6610f2", "indigo-600" = "#520dc2",
+  "indigo-700" = "#3d0a91", "indigo-800" = "#290661",
+  "indigo-900" = "#140330"
+)
+
+ggsci_db$"bs5"$"purple" <- c(
+  "purple-100" = "#e2d9f3", "purple-200" = "#c5b3e6",
+  "purple-300" = "#a98eda", "purple-400" = "#8c68cd",
+  "purple-500" = "#6f42c1", "purple-600" = "#59359a",
+  "purple-700" = "#432874", "purple-800" = "#2c1a4d",
+  "purple-900" = "#160d27"
+)
+
+ggsci_db$"bs5"$"pink" <- c(
+  "pink-100" = "#f7d6e6", "pink-200" = "#efadce",
+  "pink-300" = "#e685b5", "pink-400" = "#de5c9d",
+  "pink-500" = "#d63384", "pink-600" = "#ab296a",
+  "pink-700" = "#801f4f", "pink-800" = "#561435",
+  "pink-900" = "#2b0a1a"
+)
+
+ggsci_db$"bs5"$"red" <- c(
+  "red-100" = "#f8d7da", "red-200" = "#f1aeb5",
+  "red-300" = "#ea868f", "red-400" = "#e35d6a",
+  "red-500" = "#dc3545", "red-600" = "#b02a37",
+  "red-700" = "#842029", "red-800" = "#58151c",
+  "red-900" = "#2c0b0e"
+)
+
+ggsci_db$"bs5"$"orange" <- c(
+  "orange-100" = "#ffe5d0", "orange-200" = "#fecba1",
+  "orange-300" = "#feb272", "orange-400" = "#fd9843",
+  "orange-500" = "#fd7e14", "orange-600" = "#ca6510",
+  "orange-700" = "#984c0c", "orange-800" = "#653208",
+  "orange-900" = "#331904"
+)
+
+ggsci_db$"bs5"$"yellow" <- c(
+  "yellow-100" = "#fff3cd", "yellow-200" = "#ffe69c",
+  "yellow-300" = "#ffda6a", "yellow-400" = "#ffcd39",
+  "yellow-500" = "#ffc107", "yellow-600" = "#cc9a06",
+  "yellow-700" = "#997404", "yellow-800" = "#664d03",
+  "yellow-900" = "#332701"
+)
+
+ggsci_db$"bs5"$"green" <- c(
+  "green-100" = "#d1e7dd", "green-200" = "#a3cfbb",
+  "green-300" = "#75b798", "green-400" = "#479f76",
+  "green-500" = "#198754", "green-600" = "#146c43",
+  "green-700" = "#0f5132", "green-800" = "#0a3622",
+  "green-900" = "#051b11"
+)
+
+ggsci_db$"bs5"$"teal" <- c(
+  "teal-100" = "#d2f4ea", "teal-200" = "#a6e9d5",
+  "teal-300" = "#79dfc1", "teal-400" = "#4dd4ac",
+  "teal-500" = "#20c997", "teal-600" = "#1aa179",
+  "teal-700" = "#13795b", "teal-800" = "#0d503c",
+  "teal-900" = "#06281e"
+)
+
+ggsci_db$"bs5"$"cyan" <- c(
+  "cyan-100" = "#cff4fc", "cyan-200" = "#9eeaf9",
+  "cyan-300" = "#6edff6", "cyan-400" = "#3dd5f3",
+  "cyan-500" = "#0dcaf0", "cyan-600" = "#0aa2c0",
+  "cyan-700" = "#087990", "cyan-800" = "#055160",
+  "cyan-900" = "#032830"
+)
+
+ggsci_db$"bs5"$"gray" <- c(
+  "gray-100" = "#f8f9fa", "gray-200" = "#e9ecef",
+  "gray-300" = "#dee2e6", "gray-400" = "#ced4da",
+  "gray-500" = "#adb5bd", "gray-600" = "#6c757d",
+  "gray-700" = "#495057", "gray-800" = "#343a40",
+  "gray-900" = "#212529"
+)
+
 # Material Design color palettes
 ggsci_db$"material"$"red" <- c(
   "Red50" = "#FFEBEE", "Red100" = "#FFCDD2",
diff --git a/README.Rmd b/README.Rmd
index 4165837..550ff46 100644
--- a/README.Rmd
+++ b/README.Rmd
@@ -299,9 +299,9 @@ p3_gsea_inv <- p3 + scale_fill_gsea(reverse = TRUE)
 grid.arrange(p3_gsea, p3_gsea_inv, ncol = 2)
 ```
 
-### Material Design
+### Bootstrap 5
 
-```{r, ggsci-material, fig.height=3.8}
+```{r}
 set.seed(42)
 k <- 6
 x <- diag(k)
@@ -325,7 +325,23 @@ p4 <- ggplot(x_melt, aes(x = Var1, y = Var2, fill = value)) +
     panel.background = element_blank(), panel.border = element_blank(),
     panel.grid.major = element_blank(), panel.grid.minor = element_blank()
   )
+```
+
+```{r, ggsci-bs5, fig.height=2.6}
+grid.arrange(
+  p4 + scale_fill_bs5("blue"), p4 + scale_fill_bs5("indigo"),
+  p4 + scale_fill_bs5("purple"), p4 + scale_fill_bs5("pink"),
+  p4 + scale_fill_bs5("red"), p4 + scale_fill_bs5("orange"),
+  p4 + scale_fill_bs5("yellow"), p4 + scale_fill_bs5("green"),
+  p4 + scale_fill_bs5("teal"), p4 + scale_fill_bs5("cyan"),
+  p4 + scale_fill_bs5("gray"),
+  ncol = 8
+)
+```
 
+### Material Design
+
+```{r, ggsci-material, fig.height=3.8}
 grid.arrange(
   p4 + scale_fill_material("red"), p4 + scale_fill_material("pink"),
   p4 + scale_fill_material("purple"), p4 + scale_fill_material("deep-purple"),
diff --git a/README.md b/README.md
index af86b1a..685473b 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,10 @@ open with `vignette("ggsci")` in R) for a quick-start guide.
 
 <img src="man/figures/README-ggsci-gsea-1.png" width="100%" style="display: block; margin: auto;" />
 
+### Bootstrap 5
+
+<img src="man/figures/README-ggsci-bs5-1.png" width="100%" style="display: block; margin: auto;" />
+
 ### Material Design
 
 <img src="man/figures/README-ggsci-material-1.png" width="100%" style="display: block; margin: auto;" />
diff --git a/_pkgdown.yml b/_pkgdown.yml
index 250a370..34d369f 100644
--- a/_pkgdown.yml
+++ b/_pkgdown.yml
@@ -139,6 +139,13 @@ reference:
       - scale_color_gsea
       - scale_colour_gsea
       - scale_fill_gsea
+  - title: "Bootstrap 5"
+    contents:
+      - rgb_bs5
+      - pal_bs5
+      - scale_color_bs5
+      - scale_colour_bs5
+      - scale_fill_bs5
   - title: "Material Design"
     contents:
       - rgb_material
diff --git a/man/figures/README-ggsci-bs5-1.png b/man/figures/README-ggsci-bs5-1.png
new file mode 100644
index 0000000..96e5a17
Binary files /dev/null and b/man/figures/README-ggsci-bs5-1.png differ
diff --git a/man/pal_bs5.Rd b/man/pal_bs5.Rd
new file mode 100644
index 0000000..e68cf6f
--- /dev/null
+++ b/man/pal_bs5.Rd
@@ -0,0 +1,48 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/continuous-bs5.R
+\name{pal_bs5}
+\alias{pal_bs5}
+\title{Bootstrap 5 color palettes}
+\usage{
+pal_bs5(
+  palette = c("blue", "indigo", "purple", "pink", "red", "orange", "yellow", "green",
+    "teal", "cyan", "gray"),
+  n = 10,
+  alpha = 1,
+  reverse = FALSE
+)
+}
+\arguments{
+\item{palette}{Palette type. There are 11 available options:
+\itemize{
+\item \code{"blue"}
+\item \code{"indigo"}
+\item \code{"purple"}
+\item \code{"pink"}
+\item \code{"red"}
+\item \code{"orange"}
+\item \code{"yellow"}
+\item \code{"green"}
+\item \code{"teal"}
+\item \code{"cyan"}
+\item \code{"gray"}
+}}
+
+\item{n}{Number of individual colors to be generated.}
+
+\item{alpha}{Transparency level, a real number in (0, 1].
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
+
+\item{reverse}{Logical. Should the order of the colors be reversed?}
+}
+\description{
+Bootstrap 5 color palettes.
+}
+\examples{
+library("scales")
+show_col(pal_bs5("indigo")(10))
+show_col(pal_bs5("indigo", n = 30, alpha = 0.6, reverse = TRUE)(30))
+}
+\author{
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
+}
diff --git a/man/pal_material.Rd b/man/pal_material.Rd
index 86cbb1d..35cc3bb 100644
--- a/man/pal_material.Rd
+++ b/man/pal_material.Rd
@@ -30,14 +30,12 @@ pal_material(
 \item \code{"lime"}
 \item \code{"yellow"}
 \item \code{"amber"}
-\item \code{"orange"},
+\item \code{"orange"}
 \item \code{"deep-orange"}
 \item \code{"brown"}
 \item \code{"grey"}
 \item \code{"blue-grey"}
-}
-
-For details, see \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}.}
+}}
 
 \item{n}{Number of individual colors to be generated.}
 
@@ -47,7 +45,7 @@ See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 }
 \description{
-The Material Design 2 color palettes.
+Material Design 2 color palettes.
 }
 \examples{
 library("scales")
diff --git a/man/rgb_bs5.Rd b/man/rgb_bs5.Rd
new file mode 100644
index 0000000..ab403d1
--- /dev/null
+++ b/man/rgb_bs5.Rd
@@ -0,0 +1,51 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/continuous-bs5.R
+\name{rgb_bs5}
+\alias{rgb_bs5}
+\title{Bootstrap 5 color palettes}
+\usage{
+rgb_bs5(
+  palette = c("blue", "indigo", "purple", "pink", "red", "orange", "yellow", "green",
+    "teal", "cyan", "gray"),
+  n = 10,
+  alpha = 1,
+  reverse = FALSE
+)
+}
+\arguments{
+\item{palette}{Palette type. There are 11 available options:
+\itemize{
+\item \code{"blue"}
+\item \code{"indigo"}
+\item \code{"purple"}
+\item \code{"pink"}
+\item \code{"red"}
+\item \code{"orange"}
+\item \code{"yellow"}
+\item \code{"green"}
+\item \code{"teal"}
+\item \code{"cyan"}
+\item \code{"gray"}
+}}
+
+\item{n}{Number of individual colors to be generated.}
+
+\item{alpha}{Transparency level, a real number in (0, 1].
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
+
+\item{reverse}{Logical. Should the order of the colors be reversed?}
+}
+\description{
+Bootstrap 5 color palettes.
+}
+\examples{
+library("scales")
+show_col(pal_bs5("indigo")(10))
+show_col(pal_bs5("indigo", n = 30, alpha = 0.6, reverse = TRUE)(30))
+}
+\references{
+\url{https://getbootstrap.com/docs/5.3/customize/color/#all-colors}
+}
+\author{
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
+}
diff --git a/man/rgb_material.Rd b/man/rgb_material.Rd
index 43682d1..2aec442 100644
--- a/man/rgb_material.Rd
+++ b/man/rgb_material.Rd
@@ -30,14 +30,12 @@ rgb_material(
 \item \code{"lime"}
 \item \code{"yellow"}
 \item \code{"amber"}
-\item \code{"orange"},
+\item \code{"orange"}
 \item \code{"deep-orange"}
 \item \code{"brown"}
 \item \code{"grey"}
 \item \code{"blue-grey"}
-}
-
-For details, see \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}.}
+}}
 
 \item{n}{Number of individual colors to be generated.}
 
@@ -47,7 +45,7 @@ See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
 \item{reverse}{Logical. Should the order of the colors be reversed?}
 }
 \description{
-The Material Design 2 color palettes.
+Material Design 2 color palettes.
 }
 \examples{
 library("scales")
diff --git a/man/scale_bs5.Rd b/man/scale_bs5.Rd
new file mode 100644
index 0000000..a21f67a
--- /dev/null
+++ b/man/scale_bs5.Rd
@@ -0,0 +1,80 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/continuous-bs5.R
+\name{scale_color_bs5}
+\alias{scale_color_bs5}
+\alias{scale_colour_bs5}
+\alias{scale_fill_bs5}
+\title{Bootstrap 5 color scales}
+\usage{
+scale_color_bs5(
+  palette = c("blue", "indigo", "purple", "pink", "red", "orange", "yellow", "green",
+    "teal", "cyan", "gray"),
+  alpha = 1,
+  reverse = FALSE,
+  ...
+)
+
+scale_colour_bs5(
+  palette = c("blue", "indigo", "purple", "pink", "red", "orange", "yellow", "green",
+    "teal", "cyan", "gray"),
+  alpha = 1,
+  reverse = FALSE,
+  ...
+)
+
+scale_fill_bs5(
+  palette = c("blue", "indigo", "purple", "pink", "red", "orange", "yellow", "green",
+    "teal", "cyan", "gray"),
+  alpha = 1,
+  reverse = FALSE,
+  ...
+)
+}
+\arguments{
+\item{palette}{Palette type. There are 11 available options:
+\itemize{
+\item \code{"blue"}
+\item \code{"indigo"}
+\item \code{"purple"}
+\item \code{"pink"}
+\item \code{"red"}
+\item \code{"orange"}
+\item \code{"yellow"}
+\item \code{"green"}
+\item \code{"teal"}
+\item \code{"cyan"}
+\item \code{"gray"}
+}}
+
+\item{alpha}{Transparency level, a real number in (0, 1].
+See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
+
+\item{reverse}{Logical. Should the order of the colors be reversed?}
+
+\item{...}{Additional parameters for \code{\link[ggplot2:discrete_scale]{ggplot2::discrete_scale()}}.}
+}
+\description{
+See \code{\link[=pal_bs5]{pal_bs5()}} for details.
+}
+\examples{
+library("ggplot2")
+
+data("mtcars")
+cor <- abs(cor(mtcars))
+cor_melt <- data.frame(
+  Var1 = rep(seq_len(nrow(cor)), times = ncol(cor)),
+  Var2 = rep(seq_len(ncol(cor)), each = nrow(cor)),
+  value = as.vector(cor)
+)
+
+ggplot(
+  cor_melt,
+  aes(x = Var1, y = Var2, fill = value)
+) +
+  geom_tile(colour = "black", size = 0.3) +
+  theme_bw() +
+  scale_fill_bs5("teal")
+}
+\author{
+Nan Xiao | \email{me@nanx.me} | \url{https://nanx.me}
+}
diff --git a/man/scale_material.Rd b/man/scale_material.Rd
index d919073..f6b0370 100644
--- a/man/scale_material.Rd
+++ b/man/scale_material.Rd
@@ -4,7 +4,7 @@
 \alias{scale_color_material}
 \alias{scale_colour_material}
 \alias{scale_fill_material}
-\title{Material Design color palettes}
+\title{Material Design color scales}
 \usage{
 scale_color_material(
   palette = c("red", "pink", "purple", "deep-purple", "indigo", "blue", "light-blue",
@@ -50,14 +50,12 @@ scale_fill_material(
 \item \code{"lime"}
 \item \code{"yellow"}
 \item \code{"amber"}
-\item \code{"orange"},
+\item \code{"orange"}
 \item \code{"deep-orange"}
 \item \code{"brown"}
 \item \code{"grey"}
 \item \code{"blue-grey"}
-}
-
-For details, see \href{https://m2.material.io/design/color/the-color-system.html}{Material Design color system}.}
+}}
 
 \item{alpha}{Transparency level, a real number in (0, 1].
 See \code{alpha} in \code{\link[grDevices:rgb]{grDevices::rgb()}} for details.}
diff --git a/vignettes/ggsci.Rmd b/vignettes/ggsci.Rmd
index 86bcef5..29febd3 100644
--- a/vignettes/ggsci.Rmd
+++ b/vignettes/ggsci.Rmd
@@ -420,8 +420,15 @@ grid.arrange(p1_frontiers, p2_frontiers, ncol = 2)
 
 ## Continuous color palettes
 
+There are two types of continuous color palettes in ggsci: diverging and sequential.
+Diverging palettes have a central neutral color and contrasting colors at the ends,
+making them suitable for visualizing data with a natural midpoint.
+Sequential palettes use a gradient of colors that range from low to high
+intensity or lightness, making them ideal for representing data with
+increasing or decreasing values.
+
 We will use a correlation matrix visualization (a special type of heatmap)
-to demonstrate the continuous color palettes in ggsci.
+to demonstrate the diverging color palettes.
 
 ```{r}
 data("mtcars")
@@ -441,23 +448,7 @@ p3 <- ggplot(cor_melt, aes(x = Var1, y = Var2, fill = value)) +
   )
 ```
 
-### GSEA
-
-The GSEA palette (continuous) is inspired by the heatmaps generated by
-[GSEA GenePattern](https://software.broadinstitute.org/cancer/software/genepattern/).
-
-```{r, fig.height=4}
-p3_gsea <- p3 + scale_fill_gsea()
-p3_gsea_inv <- p3 + scale_fill_gsea(reverse = TRUE)
-grid.arrange(p3_gsea, p3_gsea_inv, ncol = 2)
-```
-
-### Material Design
-
-The Material Design color palettes are from the
-[Material Design color system](https://m2.material.io/design/color/the-color-system.html).
-
-We generate a random matrix first:
+To demonstrate sequential palettes, we use a random matrix:
 
 ```{r}
 set.seed(42)
@@ -485,7 +476,38 @@ p4 <- ggplot(x_melt, aes(x = Var1, y = Var2, fill = value)) +
   )
 ```
 
-Plot the matrix with the 19 material design color palettes:
+### GSEA
+
+The GSEA palette (continuous) is inspired by the heatmaps generated by
+[GSEA GenePattern](https://software.broadinstitute.org/cancer/software/genepattern/).
+
+```{r, fig.height=4}
+p3_gsea <- p3 + scale_fill_gsea()
+p3_gsea_inv <- p3 + scale_fill_gsea(reverse = TRUE)
+grid.arrange(p3_gsea, p3_gsea_inv, ncol = 2)
+```
+
+### Bootstrap 5
+
+The Bootstrap 5 color palettes are from the
+[Bootstrap 5 color system](https://getbootstrap.com/docs/5.3/customize/color/#all-colors).
+
+```{r, fig.height=2.6}
+grid.arrange(
+  p4 + scale_fill_bs5("blue"), p4 + scale_fill_bs5("indigo"),
+  p4 + scale_fill_bs5("purple"), p4 + scale_fill_bs5("pink"),
+  p4 + scale_fill_bs5("red"), p4 + scale_fill_bs5("orange"),
+  p4 + scale_fill_bs5("yellow"), p4 + scale_fill_bs5("green"),
+  p4 + scale_fill_bs5("teal"), p4 + scale_fill_bs5("cyan"),
+  p4 + scale_fill_bs5("gray"),
+  ncol = 8
+)
+```
+
+### Material Design
+
+The Material Design color palettes are from the
+[Material Design color system](https://m2.material.io/design/color/the-color-system.html).
 
 ```{r, fig.height=3.8}
 grid.arrange(