What color is #18243B?

#18243B is a very dark, desaturated azure, closest to the named color Eternal Darkness. It belongs to the blue family of colors.

What is the RGB value of #18243B?

The RGB value is 24, 36, 59: 24 red, 36 green and 59 blue on a 0 to 255 scale.

What is the complementary color of #18243B?

The complementary color is #3B2F18, found by rotating the hue 180° on the color wheel.

Is black or white text better on #18243B?

White text. Black text has a contrast ratio of 1.35:1 and white text 15.51:1. WCAG asks for at least 4.5:1 for normal text.

#18243B color

#18243B rgb(24, 36, 59)

Shades of blue

The hex color #18243B is a very dark, desaturated azure.

In the RGB color model it is made of 9.4% red, 14.1% green and 23.1% blue (24, 36, 59).

Its hue angle is 219°, with 42% saturation and 16% lightness. For print, the CMYK equivalent is 59% cyan, 39% magenta, 0% yellow and 77% black.

The closest named color is Eternal Darkness (#1C2841), a difference of 1.5 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 15.51:1).

#18243B color codes

HEX	`#18243B`
RGB	`rgb(24, 36, 59)`
RGB percent	`rgb(9.4%, 14.1%, 23.1%)`
HSL	`hsl(219, 42%, 16%)`
HSV / HSB	`hsv(219, 59%, 23%)`
CMYK	`cmyk(59%, 39%, 0%, 77%)`
CIE LAB	`lab(14.24, 2.85, -16.41)`
CIE LCH	`lch(14.24, 16.66, 279.85)`
CIE XYZ	`xyz(1.797, 1.772, 4.384)`
Decimal	`1582139`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #18243B, 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 #18243B	Ratio	AA	AAA	AA large
Sample text	1.35:1	Fail	Fail	Fail
Sample text	15.51:1	Pass	Pass	Pass

#18243B as text on	Ratio	AA	AAA	AA large
Sample text	15.51:1	Pass	Pass	Pass
Sample text	1.35:1	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 #18243B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #18243b; }
.text { color: #18243b; }
.border { border: 2px solid #18243b; }
.transparent { background-color: rgb(24 36 59 / 50%); }
.gradient { background: linear-gradient(to right, #18243b, #1e183b); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #18243B?: #18243B is a very dark, desaturated azure, closest to the named color Eternal Darkness. It belongs to the blue family of colors.
What is the RGB value of #18243B?: The RGB value is 24, 36, 59: 24 red, 36 green and 59 blue on a 0 to 255 scale.
What is the complementary color of #18243B?: The complementary color is #3B2F18, found by rotating the hue 180° on the color wheel.
Is black or white text better on #18243B?: White text. Black text has a contrast ratio of 1.35:1 and white text 15.51:1. WCAG asks for at least 4.5:1 for normal text.