What color is #100D21?

#100D21 is a very dark, desaturated blue, closest to the named color Corbeau. It belongs to the black family of colors.

What is the RGB value of #100D21?

The RGB value is 16, 13, 33: 16 red, 13 green and 33 blue on a 0 to 255 scale.

What is the complementary color of #100D21?

The complementary color is #1E210D, found by rotating the hue 180° on the color wheel.

Is black or white text better on #100D21?

White text. Black text has a contrast ratio of 1.1:1 and white text 19.06:1. WCAG asks for at least 4.5:1 for normal text.

#100D21 color

#100D21 rgb(16, 13, 33)

Shades of black

The hex color #100D21 is a very dark, desaturated blue.

In the RGB color model it is made of 6.3% red, 5.1% green and 12.9% blue (16, 13, 33).

Its hue angle is 249°, with 43% saturation and 9% lightness. For print, the CMYK equivalent is 52% cyan, 61% magenta, 0% yellow and 87% black.

The closest named color is Corbeau (#111122), a difference of 1.6 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 19.06:1).

#100D21 color codes

HEX	`#100D21`
RGB	`rgb(16, 13, 33)`
RGB percent	`rgb(6.3%, 5.1%, 12.9%)`
HSL	`hsl(249, 43%, 9%)`
HSV / HSB	`hsv(249, 61%, 13%)`
CMYK	`cmyk(52%, 61%, 0%, 87%)`
CIE LAB	`lab(4.59, 6.12, -12.48)`
CIE LCH	`lch(4.59, 13.9, 296.12)`
CIE XYZ	`xyz(0.632, 0.508, 1.503)`
Decimal	`1051937`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #100D21, 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 #100D21	Ratio	AA	AAA	AA large
Sample text	1.1:1	Fail	Fail	Fail
Sample text	19.06:1	Pass	Pass	Pass

#100D21 as text on	Ratio	AA	AAA	AA large
Sample text	19.06:1	Pass	Pass	Pass
Sample text	1.1:1	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 #100D21 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #100d21; }
.text { color: #100d21; }
.border { border: 2px solid #100d21; }
.transparent { background-color: rgb(16 13 33 / 50%); }
.gradient { background: linear-gradient(to right, #100d21, #1a0d21); }

Background

Text color

Border

Similar colors

Closest common color name: Midnight Black.

Questions

What color is #100D21?: #100D21 is a very dark, desaturated blue, closest to the named color Corbeau. It belongs to the black family of colors.
What is the RGB value of #100D21?: The RGB value is 16, 13, 33: 16 red, 13 green and 33 blue on a 0 to 255 scale.
What is the complementary color of #100D21?: The complementary color is #1E210D, found by rotating the hue 180° on the color wheel.
Is black or white text better on #100D21?: White text. Black text has a contrast ratio of 1.1:1 and white text 19.06:1. WCAG asks for at least 4.5:1 for normal text.