What color is #151531?

#151531 is a very dark, desaturated blue, closest to the named color Dark Knight. It belongs to the black family of colors.

What is the RGB value of #151531?

The RGB value is 21, 21, 49: 21 red, 21 green and 49 blue on a 0 to 255 scale.

What is the complementary color of #151531?

The complementary color is #313115, found by rotating the hue 180° on the color wheel.

Is black or white text better on #151531?

White text. Black text has a contrast ratio of 1.18:1 and white text 17.74:1. WCAG asks for at least 4.5:1 for normal text.

#151531 color

#151531 rgb(21, 21, 49)

Shades of black

The hex color #151531 is a very dark, desaturated blue.

In the RGB color model it is made of 8.2% red, 8.2% green and 19.2% blue (21, 21, 49).

Its hue angle is 240°, with 40% saturation and 14% lightness. For print, the CMYK equivalent is 57% cyan, 57% magenta, 0% yellow and 81% black.

The closest named color is Dark Knight (#151931), a difference of 2.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 17.74:1).

#151531 color codes

HEX	`#151531`
RGB	`rgb(21, 21, 49)`
RGB percent	`rgb(8.2%, 8.2%, 19.2%)`
HSL	`hsl(240, 40%, 14%)`
HSV / HSB	`hsv(240, 57%, 19%)`
CMYK	`cmyk(57%, 57%, 0%, 81%)`
CIE LAB	`lab(8.28, 9.5, -18.69)`
CIE LCH	`lch(8.28, 20.96, 296.94)`
CIE XYZ	`xyz(1.132, 0.917, 3.023)`
Decimal	`1381681`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #151531, 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 #151531	Ratio	AA	AAA	AA large
Sample text	1.18:1	Fail	Fail	Fail
Sample text	17.74:1	Pass	Pass	Pass

#151531 as text on	Ratio	AA	AAA	AA large
Sample text	17.74:1	Pass	Pass	Pass
Sample text	1.18:1	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 #151531 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #151531; }
.text { color: #151531; }
.border { border: 2px solid #151531; }
.transparent { background-color: rgb(21 21 49 / 50%); }
.gradient { background: linear-gradient(to right, #151531, #231531); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #151531?: #151531 is a very dark, desaturated blue, closest to the named color Dark Knight. It belongs to the black family of colors.
What is the RGB value of #151531?: The RGB value is 21, 21, 49: 21 red, 21 green and 49 blue on a 0 to 255 scale.
What is the complementary color of #151531?: The complementary color is #313115, found by rotating the hue 180° on the color wheel.
Is black or white text better on #151531?: White text. Black text has a contrast ratio of 1.18:1 and white text 17.74:1. WCAG asks for at least 4.5:1 for normal text.