diff --git a/conversions.js b/conversions.js
index 26040d2..8652867 100644
--- a/conversions.js
+++ b/conversions.js
@@ -613,6 +613,50 @@ convert.ansi256.rgb = function (args) {
 	return [r, g, b];
 };
 
+convert.ansi256.ansi16 = function (args) {
+	args = args[0];
+
+	if (args < 8) {
+		return 30 + args;
+	}
+
+	if (args < 16) {
+		return 90 + (args - 8);
+	}
+
+	let red;
+	let green;
+	let blue;
+
+	if (args >= 232) {
+		red = (((args - 232) * 10) + 8) / 255;
+		green = red;
+		blue = red;
+	} else {
+		args -= 16;
+
+		const remainder = args % 36;
+
+		red = Math.floor(args / 36) / 5;
+		green = Math.floor(remainder / 6) / 5;
+		blue = (remainder % 6) / 5;
+	}
+
+	const value = Math.max(red, green, blue) * 2;
+
+	if (value === 0) {
+		return 30;
+	}
+
+	let result = 30 + ((Math.round(blue) << 2) | (Math.round(green) << 1) | Math.round(red));
+
+	if (value === 2) {
+		result += 60;
+	}
+
+	return result;
+};
+
 convert.rgb.hex = function (args) {
 	const integer = ((Math.round(args[0]) & 0xFF) << 16)
 		+ ((Math.round(args[1]) & 0xFF) << 8)
diff --git a/test/basic.js b/test/basic.js
index 50bc652..a1334c1 100644
--- a/test/basic.js
+++ b/test/basic.js
@@ -238,3 +238,11 @@ assert.deepStrictEqual(convert.rgb.gray([0, 128, 255]), [50]);
 
 // https://github.com/Qix-/color-convert/issues/74
 assert.deepStrictEqual(convert.rgb.ansi256(40, 38, 41), 235);
+
+for (let code = 0; code < 8; code++) {
+	assert.strictEqual(convert.ansi256.ansi16(code), 30 + code);
+}
+
+for (let code = 8; code < 16; code++) {
+	assert.strictEqual(convert.ansi256.ansi16(code), 90 + (code - 8));
+}