What color is #151C23?

#151C23 is a very dark, desaturated azure, closest to the named color Satin Deep Black. It belongs to the black family of colors.

What is the RGB value of #151C23?

The RGB value is 21, 28, 35: 21 red, 28 green and 35 blue on a 0 to 255 scale.

What is the complementary color of #151C23?

The complementary color is #231C15, found by rotating the hue 180° on the color wheel.

Is black or white text better on #151C23?

White text. Black text has a contrast ratio of 1.22:1 and white text 17.18:1. WCAG asks for at least 4.5:1 for normal text.

#151C23 color

#151C23 rgb(21, 28, 35)

Shades of black

The hex color #151C23 is a very dark, desaturated azure.

In the RGB color model it is made of 8.2% red, 11% green and 13.7% blue (21, 28, 35).

Its hue angle is 210°, with 25% saturation and 11% lightness. For print, the CMYK equivalent is 40% cyan, 20% magenta, 0% yellow and 86% black.

The closest named color is Satin Deep Black (#1C1E21), a difference of 3.2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 17.18:1).

#151C23 color codes

HEX	`#151C23`
RGB	`rgb(21, 28, 35)`
RGB percent	`rgb(8.2%, 11%, 13.7%)`
HSL	`hsl(210, 25%, 11%)`
HSV / HSB	`hsv(210, 40%, 14%)`
CMYK	`cmyk(40%, 20%, 0%, 86%)`
CIE LAB	`lab(9.89, -1.01, -5.84)`
CIE LCH	`lch(9.89, 5.93, 260.2)`
CIE XYZ	`xyz(1.028, 1.111, 1.75)`
Decimal	`1383459`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #151C23, 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 #151C23	Ratio	AA	AAA	AA large
Sample text	1.22:1	Fail	Fail	Fail
Sample text	17.18:1	Pass	Pass	Pass

#151C23 as text on	Ratio	AA	AAA	AA large
Sample text	17.18:1	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 #151C23 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #151c23; }
.text { color: #151c23; }
.border { border: 2px solid #151c23; }
.transparent { background-color: rgb(21 28 35 / 50%); }
.gradient { background: linear-gradient(to right, #151c23, #151523); }

Background

Text color

Border

Similar colors

Closest common color name: Rich Black.

Questions

What color is #151C23?: #151C23 is a very dark, desaturated azure, closest to the named color Satin Deep Black. It belongs to the black family of colors.
What is the RGB value of #151C23?: The RGB value is 21, 28, 35: 21 red, 28 green and 35 blue on a 0 to 255 scale.
What is the complementary color of #151C23?: The complementary color is #231C15, found by rotating the hue 180° on the color wheel.
Is black or white text better on #151C23?: White text. Black text has a contrast ratio of 1.22:1 and white text 17.18:1. WCAG asks for at least 4.5:1 for normal text.