What color is #151B29?

#151B29 is a very dark, desaturated blue, closest to the named color Moonless Mystery. It belongs to the black family of colors.

What is the RGB value of #151B29?

The RGB value is 21, 27, 41: 21 red, 27 green and 41 blue on a 0 to 255 scale.

What is the complementary color of #151B29?

The complementary color is #292315, found by rotating the hue 180° on the color wheel.

Is black or white text better on #151B29?

White text. Black text has a contrast ratio of 1.22:1 and white text 17.2:1. WCAG asks for at least 4.5:1 for normal text.

#151B29 color

#151B29 rgb(21, 27, 41)

Shades of black

The hex color #151B29 is a very dark, desaturated blue.

In the RGB color model it is made of 8.2% red, 10.6% green and 16.1% blue (21, 27, 41).

Its hue angle is 222°, with 32% saturation and 12% lightness. For print, the CMYK equivalent is 49% cyan, 34% magenta, 0% yellow and 84% black.

The closest named color is Moonless Mystery (#1E2433), a difference of 2.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 17.2:1).

#151B29 color codes

HEX	`#151B29`
RGB	`rgb(21, 27, 41)`
RGB percent	`rgb(8.2%, 10.6%, 16.1%)`
HSL	`hsl(222, 32%, 12%)`
HSV / HSB	`hsv(222, 49%, 16%)`
CMYK	`cmyk(49%, 34%, 0%, 84%)`
CIE LAB	`lab(9.82, 1.83, -10.38)`
CIE LCH	`lch(9.82, 10.54, 280.01)`
CIE XYZ	`xyz(1.101, 1.103, 2.252)`
Decimal	`1383209`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #151B29, 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 #151B29	Ratio	AA	AAA	AA large
Sample text	1.22:1	Fail	Fail	Fail
Sample text	17.2:1	Pass	Pass	Pass

#151B29 as text on	Ratio	AA	AAA	AA large
Sample text	17.2:1	Pass	Pass	Pass
Sample text	1.22:1	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 #151B29 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #151b29; }
.text { color: #151b29; }
.border { border: 2px solid #151b29; }
.transparent { background-color: rgb(21 27 41 / 50%); }
.gradient { background: linear-gradient(to right, #151b29, #191529); }

Background

Text color

Border

Similar colors

Closest common color name: Rich Black.

Questions

What color is #151B29?: #151B29 is a very dark, desaturated blue, closest to the named color Moonless Mystery. It belongs to the black family of colors.
What is the RGB value of #151B29?: The RGB value is 21, 27, 41: 21 red, 27 green and 41 blue on a 0 to 255 scale.
What is the complementary color of #151B29?: The complementary color is #292315, found by rotating the hue 180° on the color wheel.
Is black or white text better on #151B29?: White text. Black text has a contrast ratio of 1.22:1 and white text 17.2:1. WCAG asks for at least 4.5:1 for normal text.