diff --git a/index.d.ts b/index.d.ts
index a2e3a6f..2d769a7 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -183,14 +183,6 @@ export interface ChalkInstance extends ChalkFunction {
 	*/
 	hex: (color: string) => this;
 
-	/**
-	Use a [Select/Set Graphic Rendition](https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters) (SGR) [color code number](https://en.wikipedia.org/wiki/ANSI_escape_code#3/4_bit) to set text color.
-
-	30 <= code && code < 38 || 90 <= code && code < 98
-	For example, 31 for red, 91 for redBright.
-	*/
-	ansi: (code: number) => this;
-
 	/**
 	Use a [8-bit unsigned number](https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit) to set text color.
 	*/
@@ -215,15 +207,6 @@ export interface ChalkInstance extends ChalkFunction {
 	*/
 	bgHex: (color: string) => this;
 
-	/**
-	Use a [Select/Set Graphic Rendition](https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_parameters) (SGR) [color code number](https://en.wikipedia.org/wiki/ANSI_escape_code#3/4_bit) to set background color.
-
-	30 <= code && code < 38 || 90 <= code && code < 98
-	For example, 31 for red, 91 for redBright.
-	Use the foreground code, not the background code (for example, not 41, nor 101).
-	*/
-	bgAnsi: (code: number) => this;
-
 	/**
 	Use a [8-bit unsigned number](https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit) to set background color.
 	*/
diff --git a/index.test-d.ts b/index.test-d.ts
index 0f41ecc..45299d6 100644
--- a/index.test-d.ts
+++ b/index.test-d.ts
@@ -43,11 +43,9 @@ expectType<string>(chalk`Works with numbers {bold.red ${1}}`);
 // -- Color methods --
 expectAssignable<colorReturn>(chalk.rgb(0, 0, 0));
 expectAssignable<colorReturn>(chalk.hex('#DEADED'));
-expectAssignable<colorReturn>(chalk.ansi(30));
 expectAssignable<colorReturn>(chalk.ansi256(0));
 expectAssignable<colorReturn>(chalk.bgRgb(0, 0, 0));
 expectAssignable<colorReturn>(chalk.bgHex('#DEADED'));
-expectAssignable<colorReturn>(chalk.bgAnsi(30));
 expectAssignable<colorReturn>(chalk.bgAnsi256(0));
 
 // -- Modifiers --
diff --git a/readme.md b/readme.md
index 09737d8..6d92165 100644
--- a/readme.md
+++ b/readme.md
@@ -298,7 +298,6 @@ The following color models can be used:
 
 - [`rgb`](https://en.wikipedia.org/wiki/RGB_color_model) - Example: `chalk.rgb(255, 136, 0).bold('Orange!')`
 - [`hex`](https://en.wikipedia.org/wiki/Web_colors#Hex_triplet) - Example: `chalk.hex('#FF8800').bold('Orange!')`
-- [`ansi`](https://en.wikipedia.org/wiki/ANSI_escape_code#3/4_bit) - Example: `chalk.ansi(31).bgAnsi(93)('red on yellowBright')`
 - [`ansi256`](https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit) - Example: `chalk.bgAnsi256(194)('Honeydew, more or less')`
 
 ## Browser support
diff --git a/source/index.js b/source/index.js
index f92f309..fb326d2 100644
--- a/source/index.js
+++ b/source/index.js
@@ -92,7 +92,7 @@ const getModelAnsi = (model, level, type, ...arguments_) => {
 	return ansiStyles[type][model](...arguments_);
 };
 
-const usedModels = ['rgb', 'hex', 'ansi256', 'ansi'];
+const usedModels = ['rgb', 'hex', 'ansi256'];
 
 for (const model of usedModels) {
 	styles[model] = {