What color is #101B31?

#101B31 is a very dark, moderate blue, closest to the named color Sombre Night. It belongs to the black family of colors.

What is the RGB value of #101B31?

The RGB value is 16, 27, 49: 16 red, 27 green and 49 blue on a 0 to 255 scale.

What is the complementary color of #101B31?

The complementary color is #312610, found by rotating the hue 180° on the color wheel.

Is black or white text better on #101B31?

White text. Black text has a contrast ratio of 1.22:1 and white text 17.17:1. WCAG asks for at least 4.5:1 for normal text.

#101B31 color

#101B31 rgb(16, 27, 49)

Shades of black

The hex color #101B31 is a very dark, moderate blue.

In the RGB color model it is made of 6.3% red, 10.6% green and 19.2% blue (16, 27, 49).

Its hue angle is 220°, with 51% saturation and 13% lightness. For print, the CMYK equivalent is 67% cyan, 45% magenta, 0% yellow and 81% black.

The closest named color is Sombre Night (#161E34), a difference of 1.4 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 17.17:1).

#101B31 color codes

HEX	`#101B31`
RGB	`rgb(16, 27, 49)`
RGB percent	`rgb(6.3%, 10.6%, 19.2%)`
HSL	`hsl(220, 51%, 13%)`
HSV / HSB	`hsv(220, 67%, 19%)`
CMYK	`cmyk(67%, 45%, 0%, 81%)`
CIE LAB	`lab(9.92, 3.39, -16.11)`
CIE LCH	`lch(9.92, 16.46, 281.87)`
CIE XYZ	`xyz(1.16, 1.116, 3.059)`
Decimal	`1055537`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #101B31, 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 #101B31	Ratio	AA	AAA	AA large
Sample text	1.22:1	Fail	Fail	Fail
Sample text	17.17:1	Pass	Pass	Pass

#101B31 as text on	Ratio	AA	AAA	AA large
Sample text	17.17:1	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 #101B31 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #101b31; }
.text { color: #101b31; }
.border { border: 2px solid #101b31; }
.transparent { background-color: rgb(16 27 49 / 50%); }
.gradient { background: linear-gradient(to right, #101b31, #161031); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #101B31?: #101B31 is a very dark, moderate blue, closest to the named color Sombre Night. It belongs to the black family of colors.
What is the RGB value of #101B31?: The RGB value is 16, 27, 49: 16 red, 27 green and 49 blue on a 0 to 255 scale.
What is the complementary color of #101B31?: The complementary color is #312610, found by rotating the hue 180° on the color wheel.
Is black or white text better on #101B31?: White text. Black text has a contrast ratio of 1.22:1 and white text 17.17:1. WCAG asks for at least 4.5:1 for normal text.