What color is #151D2B?

#151D2B is a very dark, desaturated azure, closest to the named color Dark. It belongs to the black family of colors.

What is the RGB value of #151D2B?

The RGB value is 21, 29, 43: 21 red, 29 green and 43 blue on a 0 to 255 scale.

What is the complementary color of #151D2B?

The complementary color is #2B2315, found by rotating the hue 180° on the color wheel.

Is black or white text better on #151D2B?

White text. Black text has a contrast ratio of 1.24:1 and white text 16.9:1. WCAG asks for at least 4.5:1 for normal text.

#151D2B color

#151D2B rgb(21, 29, 43)

Shades of black

The hex color #151D2B is a very dark, desaturated azure.

In the RGB color model it is made of 8.2% red, 11.4% green and 16.9% blue (21, 29, 43).

Its hue angle is 218°, with 34% saturation and 13% lightness. For print, the CMYK equivalent is 51% cyan, 33% magenta, 0% yellow and 83% black.

The closest named color is Dark (#1B2431), a difference of 2.5 ΔE, a small difference.

White text is the more readable choice on this background (contrast 16.9:1).

#151D2B color codes

HEX	`#151D2B`
RGB	`rgb(21, 29, 43)`
RGB percent	`rgb(8.2%, 11.4%, 16.9%)`
HSL	`hsl(218, 34%, 13%)`
HSV / HSB	`hsv(218, 51%, 17%)`
CMYK	`cmyk(51%, 33%, 0%, 83%)`
CIE LAB	`lab(10.65, 1.06, -10.57)`
CIE LCH	`lch(10.65, 10.62, 275.71)`
CIE XYZ	`xyz(1.185, 1.213, 2.457)`
Decimal	`1383723`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #151D2B, 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 #151D2B	Ratio	AA	AAA	AA large
Sample text	1.24:1	Fail	Fail	Fail
Sample text	16.9:1	Pass	Pass	Pass

#151D2B as text on	Ratio	AA	AAA	AA large
Sample text	16.9:1	Pass	Pass	Pass
Sample text	1.24:1	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 #151D2B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #151d2b; }
.text { color: #151d2b; }
.border { border: 2px solid #151d2b; }
.transparent { background-color: rgb(21 29 43 / 50%); }
.gradient { background: linear-gradient(to right, #151d2b, #18152b); }

Background

Text color

Border

Similar colors

Closest common color name: Rich Black.

Questions

What color is #151D2B?: #151D2B is a very dark, desaturated azure, closest to the named color Dark. It belongs to the black family of colors.
What is the RGB value of #151D2B?: The RGB value is 21, 29, 43: 21 red, 29 green and 43 blue on a 0 to 255 scale.
What is the complementary color of #151D2B?: The complementary color is #2B2315, found by rotating the hue 180° on the color wheel.
Is black or white text better on #151D2B?: White text. Black text has a contrast ratio of 1.24:1 and white text 16.9:1. WCAG asks for at least 4.5:1 for normal text.