What color is #151B17?

#151B17 is a very dark, grayish green, closest to the named color Underworld. It belongs to the black family of colors.

What is the RGB value of #151B17?

The RGB value is 21, 27, 23: 21 red, 27 green and 23 blue on a 0 to 255 scale.

What is the complementary color of #151B17?

The complementary color is #1B1519, found by rotating the hue 180° on the color wheel.

Is black or white text better on #151B17?

White text. Black text has a contrast ratio of 1.2:1 and white text 17.48:1. WCAG asks for at least 4.5:1 for normal text.

#151B17 color

#151B17 rgb(21, 27, 23)

Shades of black

The hex color #151B17 is a very dark, grayish green.

In the RGB color model it is made of 8.2% red, 10.6% green and 9% blue (21, 27, 23).

Its hue angle is 140°, with 13% saturation and 9% lightness. For print, the CMYK equivalent is 22% cyan, 0% magenta, 15% yellow and 89% black.

The closest named color is Underworld (#1E231C), a difference of 3.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 17.48:1).

#151B17 color codes

HEX	`#151B17`
RGB	`rgb(21, 27, 23)`
RGB percent	`rgb(8.2%, 10.6%, 9%)`
HSL	`hsl(140, 13%, 9%)`
HSV / HSB	`hsv(140, 22%, 11%)`
CMYK	`cmyk(22%, 0%, 15%, 89%)`
CIE LAB	`lab(9.03, -3.89, 1.85)`
CIE LCH	`lch(9.03, 4.31, 154.5)`
CIE XYZ	`xyz(0.856, 1.005, 0.959)`
Decimal	`1383191`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #151B17, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #151B17	Ratio	AA	AAA	AA large
Sample text	1.2:1	Fail	Fail	Fail
Sample text	17.48:1	Pass	Pass	Pass

#151B17 as text on	Ratio	AA	AAA	AA large
Sample text	17.48:1	Pass	Pass	Pass
Sample text	1.2:1	Fail	Fail	Fail

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #151B17 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #151b17; }
.text { color: #151b17; }
.border { border: 2px solid #151b17; }
.transparent { background-color: rgb(21 27 23 / 50%); }
.gradient { background: linear-gradient(to right, #151b17, #151b1a); }

Background

Text color

Border

Similar colors

Closest common color name: Off Black.

Questions

What color is #151B17?: #151B17 is a very dark, grayish green, closest to the named color Underworld. It belongs to the black family of colors.
What is the RGB value of #151B17?: The RGB value is 21, 27, 23: 21 red, 27 green and 23 blue on a 0 to 255 scale.
What is the complementary color of #151B17?: The complementary color is #1B1519, found by rotating the hue 180° on the color wheel.
Is black or white text better on #151B17?: White text. Black text has a contrast ratio of 1.2:1 and white text 17.48:1. WCAG asks for at least 4.5:1 for normal text.