#18181B Color

#18181B is rgb(24, 24, 27) in RGB, hsl(240, 6%, 10%) in HSL, and about cmyk(11%, 11%, 0%, 89%) in CMYK. It has no registered color name of its own — the closest is Off Black (#1A1A1A), very hard to tell apart at ΔE 2.38. White text is the more readable choice on this background.

#18181B

HEX#18181B

RGBrgb(24, 24, 27)

HSLhsl(240, 6%, 10%)

HSVhsv(240, 11%, 11%)

CMYKcmyk(11%, 11%, 0%, 89%)

OKLCHoklch(21% 0.006 285.9)

LABlab(8.35% 0.60 -2.12)

LCHlch(8.35% 2.20 285.90)

What #18181B Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #18181B, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Off Black#1A1A1AΔE 2.38 Eerie Black#1B1B1BΔE 2.62 Soft Black#131313ΔE 3.3 Raisin Black#242124ΔE 5.06 Licorice#1A1110ΔE 5.91 Jet Black#0A0A0AΔE 6.02

Browse the full index of named colors A-Z or every black in the library.

#18181B Channel Values

How #18181B breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 24 · G 24 · B 27	8-bit channels as sent to the display
HSL	H 240° · S 6% · L 10%	Easiest model for building lighter and darker variants
HSV	H 240° · S 11% · V 11%	Matches the picker in most design tools
CMYK	C 11% · M 11% · Y 0% · K 89%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	17.72:1 vs white · 1.19:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #18181B background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text17.72:1AA normal AA large AAA normal

Fails AABlack text1.19:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #18181B in the contrast checker.

Colors That Go With #18181B

Pairings derived from color-wheel relationships. The complementary color sits opposite #18181B; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of #18181B

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #18181B.

How #18181B Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#18181B

Protanopia#18181B

Protanomaly#18181B

Deuteranopia#18181B

Deuteranomaly#18181B

Tritanopia#181818

Tritanomaly#181819

Achromatopsia#181818

Test a full palette in the color blindness simulator.

Using #18181B in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-18181b: #18181B;

CSS backgroundbackground-color: #18181B;

Tailwind configcolors: { 'color-18181b': '#18181B' }

SwiftUIColor(red: 0.094, green: 0.094, blue: 0.106)

Android XML<color name="color_18181b">#18181B</color>

SVG fillfill="#18181B"

More Black Colors

#18181B sits in the black family. These are its neighbours across that family's full range, each with its own breakdown.

1a1a1a 171717 1b1b1b 131313 1c1c1c 0f0f0f 212121 0d0d0d 242124 0a0a0a 242424 080808 000000 030303 050505

#18181B Frequently Asked Questions

What color is #18181B?

#18181B is a darkest black — rgb(24, 24, 27) in RGB and hsl(240, 6%, 10%) in HSL. It carries no registered color name of its own; the closest named color is Off Black (#1A1A1A), which is very hard to tell apart at a CIE76 distance of 2.38.

What is the RGB value of #18181B?

#18181B is rgb(24, 24, 27) — red 24, green 24, and blue 27 on the 0-255 scale.

What is the CMYK value of #18181B?

#18181B converts to approximately cmyk(11%, 11%, 0%, 89%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #18181B be black or white?

White text is the more readable choice. #18181B scores 17.72:1 against white and 1.19:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #18181B as a CSS color keyword?

No. #18181B is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is black (#000000) at a CIE76 distance of 8.63, which is clearly related but distinguishable side by side.

Open #18181B in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every black in the color library, the guide to shades of black, or the full color library.