What color is #181F30?

#181F30 is a very dark, desaturated blue, closest to the named color Moonless Mystery. It belongs to the black family of colors.

What is the RGB value of #181F30?

The RGB value is 24, 31, 48: 24 red, 31 green and 48 blue on a 0 to 255 scale.

What is the complementary color of #181F30?

The complementary color is #302918, found by rotating the hue 180° on the color wheel.

Is black or white text better on #181F30?

White text. Black text has a contrast ratio of 1.28:1 and white text 16.44:1. WCAG asks for at least 4.5:1 for normal text.

#181F30 color

#181F30 rgb(24, 31, 48)

Shades of black

The hex color #181F30 is a very dark, desaturated blue.

In the RGB color model it is made of 9.4% red, 12.2% green and 18.8% blue (24, 31, 48).

Its hue angle is 223°, with 33% saturation and 14% lightness. For print, the CMYK equivalent is 50% cyan, 35% magenta, 0% yellow and 81% black.

The closest named color is Moonless Mystery (#1E2433), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 16.44:1).

#181F30 color codes

HEX	`#181F30`
RGB	`rgb(24, 31, 48)`
RGB percent	`rgb(9.4%, 12.2%, 18.8%)`
HSL	`hsl(223, 33%, 14%)`
HSV / HSB	`hsv(223, 50%, 19%)`
CMYK	`cmyk(50%, 35%, 0%, 81%)`
CIE LAB	`lab(11.87, 2.42, -12.28)`
CIE LCH	`lch(11.87, 12.51, 281.14)`
CIE XYZ	`xyz(1.4, 1.387, 2.99)`
Decimal	`1580848`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #181F30, 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 #181F30	Ratio	AA	AAA	AA large
Sample text	1.28:1	Fail	Fail	Fail
Sample text	16.44:1	Pass	Pass	Pass

#181F30 as text on	Ratio	AA	AAA	AA large
Sample text	16.44:1	Pass	Pass	Pass
Sample text	1.28:1	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 #181F30 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #181f30; }
.text { color: #181f30; }
.border { border: 2px solid #181f30; }
.transparent { background-color: rgb(24 31 48 / 50%); }
.gradient { background: linear-gradient(to right, #181f30, #1d1830); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #181F30?: #181F30 is a very dark, desaturated blue, closest to the named color Moonless Mystery. It belongs to the black family of colors.
What is the RGB value of #181F30?: The RGB value is 24, 31, 48: 24 red, 31 green and 48 blue on a 0 to 255 scale.
What is the complementary color of #181F30?: The complementary color is #302918, found by rotating the hue 180° on the color wheel.
Is black or white text better on #181F30?: White text. Black text has a contrast ratio of 1.28:1 and white text 16.44:1. WCAG asks for at least 4.5:1 for normal text.