diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/ColorConverter.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/ColorConverter.java
index e5795fbbf2..84bcedb404 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/ColorConverter.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/ColorConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,6 +53,8 @@ public final class ColorConverter extends LogEventPatternConverter {
 
 	static {
 		Map<String, AnsiElement> ansiElements = new HashMap<>();
+		ansiElements.put("black", AnsiColor.BLACK);
+		ansiElements.put("white", AnsiColor.WHITE);
 		ansiElements.put("faint", AnsiStyle.FAINT);
 		ansiElements.put("red", AnsiColor.RED);
 		ansiElements.put("green", AnsiColor.GREEN);
@@ -60,6 +62,14 @@ public final class ColorConverter extends LogEventPatternConverter {
 		ansiElements.put("blue", AnsiColor.BLUE);
 		ansiElements.put("magenta", AnsiColor.MAGENTA);
 		ansiElements.put("cyan", AnsiColor.CYAN);
+		ansiElements.put("bright_black", AnsiColor.BRIGHT_BLACK);
+		ansiElements.put("bright_white", AnsiColor.BRIGHT_WHITE);
+		ansiElements.put("bright_red", AnsiColor.BRIGHT_RED);
+		ansiElements.put("bright_green", AnsiColor.BRIGHT_GREEN);
+		ansiElements.put("bright_yellow", AnsiColor.BRIGHT_YELLOW);
+		ansiElements.put("bright_blue", AnsiColor.BRIGHT_BLUE);
+		ansiElements.put("bright_magenta", AnsiColor.BRIGHT_MAGENTA);
+		ansiElements.put("bright_cyan", AnsiColor.BRIGHT_CYAN);
 		ELEMENTS = Collections.unmodifiableMap(ansiElements);
 	}
 
diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/ColorConverter.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/ColorConverter.java
index 8011e0c230..7b1890257a 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/ColorConverter.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/logback/ColorConverter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -43,6 +43,8 @@ public class ColorConverter extends CompositeConverter<ILoggingEvent> {
 
 	static {
 		Map<String, AnsiElement> ansiElements = new HashMap<>();
+		ansiElements.put("black", AnsiColor.BLACK);
+		ansiElements.put("white", AnsiColor.WHITE);
 		ansiElements.put("faint", AnsiStyle.FAINT);
 		ansiElements.put("red", AnsiColor.RED);
 		ansiElements.put("green", AnsiColor.GREEN);
@@ -50,6 +52,14 @@ public class ColorConverter extends CompositeConverter<ILoggingEvent> {
 		ansiElements.put("blue", AnsiColor.BLUE);
 		ansiElements.put("magenta", AnsiColor.MAGENTA);
 		ansiElements.put("cyan", AnsiColor.CYAN);
+		ansiElements.put("bright_black", AnsiColor.BRIGHT_BLACK);
+		ansiElements.put("bright_white", AnsiColor.BRIGHT_WHITE);
+		ansiElements.put("bright_red", AnsiColor.BRIGHT_RED);
+		ansiElements.put("bright_green", AnsiColor.BRIGHT_GREEN);
+		ansiElements.put("bright_yellow", AnsiColor.BRIGHT_YELLOW);
+		ansiElements.put("bright_blue", AnsiColor.BRIGHT_BLUE);
+		ansiElements.put("bright_magenta", AnsiColor.BRIGHT_MAGENTA);
+		ansiElements.put("bright_cyan", AnsiColor.BRIGHT_CYAN);
 		ELEMENTS = Collections.unmodifiableMap(ansiElements);
 	}
 
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/ColorConverterTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/ColorConverterTests.java
index 84da00eeb0..433c57ff15 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/ColorConverterTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/ColorConverterTests.java
@@ -57,6 +57,20 @@ class ColorConverterTests {
 		return ColorConverter.newInstance(null, new String[] { this.in, styling });
 	}
 
+	@Test
+	void black() {
+		StringBuilder output = new StringBuilder();
+		newConverter("black").format(this.event, output);
+		assertThat(output).hasToString("\033[30min\033[0;39m");
+	}
+
+	@Test
+	void white() {
+		StringBuilder output = new StringBuilder();
+		newConverter("white").format(this.event, output);
+		assertThat(output).hasToString("\033[37min\033[0;39m");
+	}
+
 	@Test
 	void faint() {
 		StringBuilder output = new StringBuilder();
@@ -106,6 +120,62 @@ class ColorConverterTests {
 		assertThat(output).hasToString("\033[36min\033[0;39m");
 	}
 
+	@Test
+	void brightBlack() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_black").format(this.event, output);
+		assertThat(output).hasToString("\033[90min\033[0;39m");
+	}
+
+	@Test
+	void brightWhite() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_white").format(this.event, output);
+		assertThat(output).hasToString("\033[97min\033[0;39m");
+	}
+
+	@Test
+	void brightRed() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_red").format(this.event, output);
+		assertThat(output).hasToString("\033[91min\033[0;39m");
+	}
+
+	@Test
+	void brightGreen() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_green").format(this.event, output);
+		assertThat(output).hasToString("\033[92min\033[0;39m");
+	}
+
+	@Test
+	void brightYellow() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_yellow").format(this.event, output);
+		assertThat(output).hasToString("\033[93min\033[0;39m");
+	}
+
+	@Test
+	void brightBlue() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_blue").format(this.event, output);
+		assertThat(output).hasToString("\033[94min\033[0;39m");
+	}
+
+	@Test
+	void brightMagenta() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_magenta").format(this.event, output);
+		assertThat(output).hasToString("\033[95min\033[0;39m");
+	}
+
+	@Test
+	void brightCyan() {
+		StringBuilder output = new StringBuilder();
+		newConverter("bright_cyan").format(this.event, output);
+		assertThat(output).hasToString("\033[96min\033[0;39m");
+	}
+
 	@Test
 	void highlightFatal() {
 		this.event.setLevel(Level.FATAL);
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/ColorConverterTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/ColorConverterTests.java
index f4e1abb468..4ce831e425 100644
--- a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/ColorConverterTests.java
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/logback/ColorConverterTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2019 the original author or authors.
+ * Copyright 2012-2023 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,6 +51,20 @@ class ColorConverterTests {
 		AnsiOutput.setEnabled(AnsiOutput.Enabled.DETECT);
 	}
 
+	@Test
+	void black() {
+		this.converter.setOptionList(Collections.singletonList("black"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[30min\033[0;39m");
+	}
+
+	@Test
+	void white() {
+		this.converter.setOptionList(Collections.singletonList("white"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[37min\033[0;39m");
+	}
+
 	@Test
 	void faint() {
 		this.converter.setOptionList(Collections.singletonList("faint"));
@@ -100,6 +114,62 @@ class ColorConverterTests {
 		assertThat(out).isEqualTo("\033[36min\033[0;39m");
 	}
 
+	@Test
+	void brightBlack() {
+		this.converter.setOptionList(Collections.singletonList("bright_black"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[90min\033[0;39m");
+	}
+
+	@Test
+	void brightWhite() {
+		this.converter.setOptionList(Collections.singletonList("bright_white"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[97min\033[0;39m");
+	}
+
+	@Test
+	void brightRed() {
+		this.converter.setOptionList(Collections.singletonList("bright_red"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[91min\033[0;39m");
+	}
+
+	@Test
+	void brightGreen() {
+		this.converter.setOptionList(Collections.singletonList("bright_green"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[92min\033[0;39m");
+	}
+
+	@Test
+	void brightYellow() {
+		this.converter.setOptionList(Collections.singletonList("bright_yellow"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[93min\033[0;39m");
+	}
+
+	@Test
+	void brightBlue() {
+		this.converter.setOptionList(Collections.singletonList("bright_blue"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[94min\033[0;39m");
+	}
+
+	@Test
+	void brightMagenta() {
+		this.converter.setOptionList(Collections.singletonList("bright_magenta"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[95min\033[0;39m");
+	}
+
+	@Test
+	void brightCyan() {
+		this.converter.setOptionList(Collections.singletonList("bright_cyan"));
+		String out = this.converter.transform(this.event, this.in);
+		assertThat(out).isEqualTo("\033[96min\033[0;39m");
+	}
+
 	@Test
 	void highlightError() {
 		this.event.setLevel(Level.ERROR);