What color is #181D33?

#181D33 is a very dark, desaturated blue, closest to the named color Sombre Night. It belongs to the black family of colors.

What is the RGB value of #181D33?

The RGB value is 24, 29, 51: 24 red, 29 green and 51 blue on a 0 to 255 scale.

What is the complementary color of #181D33?

The complementary color is #332E18, found by rotating the hue 180° on the color wheel.

Is black or white text better on #181D33?

White text. Black text has a contrast ratio of 1.26:1 and white text 16.64:1. WCAG asks for at least 4.5:1 for normal text.

#181D33 color

#181D33 rgb(24, 29, 51)

Shades of black

The hex color #181D33 is a very dark, desaturated blue.

In the RGB color model it is made of 9.4% red, 11.4% green and 20% blue (24, 29, 51).

Its hue angle is 229°, with 36% saturation and 15% lightness. For print, the CMYK equivalent is 53% cyan, 43% magenta, 0% yellow and 80% black.

The closest named color is Sombre Night (#161E34), a difference of 1.3 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 16.64:1).

#181D33 color codes

HEX	`#181D33`
RGB	`rgb(24, 29, 51)`
RGB percent	`rgb(9.4%, 11.4%, 20%)`
HSL	`hsl(229, 36%, 15%)`
HSV / HSB	`hsv(229, 53%, 20%)`
CMYK	`cmyk(53%, 43%, 0%, 80%)`
CIE LAB	`lab(11.36, 5.03, -15.25)`
CIE LCH	`lch(11.36, 16.06, 288.26)`
CIE XYZ	`xyz(1.413, 1.312, 3.31)`
Decimal	`1580339`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #181D33, 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 #181D33	Ratio	AA	AAA	AA large
Sample text	1.26:1	Fail	Fail	Fail
Sample text	16.64:1	Pass	Pass	Pass

#181D33 as text on	Ratio	AA	AAA	AA large
Sample text	16.64:1	Pass	Pass	Pass
Sample text	1.26:1	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 #181D33 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #181d33; }
.text { color: #181d33; }
.border { border: 2px solid #181d33; }
.transparent { background-color: rgb(24 29 51 / 50%); }
.gradient { background: linear-gradient(to right, #181d33, #211833); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #181D33?: #181D33 is a very dark, desaturated blue, closest to the named color Sombre Night. It belongs to the black family of colors.
What is the RGB value of #181D33?: The RGB value is 24, 29, 51: 24 red, 29 green and 51 blue on a 0 to 255 scale.
What is the complementary color of #181D33?: The complementary color is #332E18, found by rotating the hue 180° on the color wheel.
Is black or white text better on #181D33?: White text. Black text has a contrast ratio of 1.26:1 and white text 16.64:1. WCAG asks for at least 4.5:1 for normal text.