What color is #183A37?

#183A37 is a very dark, desaturated spring green, closest to the named color Botanical Night. It belongs to the teal family of colors.

What is the RGB value of #183A37?

The RGB value is 24, 58, 55: 24 red, 58 green and 55 blue on a 0 to 255 scale.

What is the complementary color of #183A37?

The complementary color is #3A181B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #183A37?

White text. Black text has a contrast ratio of 1.7:1 and white text 12.36:1. WCAG asks for at least 4.5:1 for normal text.

#183A37 color

#183A37 rgb(24, 58, 55)

Shades of teal

The hex color #183A37 is a very dark, desaturated spring green.

In the RGB color model it is made of 9.4% red, 22.7% green and 21.6% blue (24, 58, 55).

Its hue angle is 175°, with 41% saturation and 16% lightness. For print, the CMYK equivalent is 59% cyan, 0% magenta, 5% yellow and 77% black.

The closest named color is Botanical Night (#12403C), a difference of 2.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 12.36:1).

#183A37 color codes

HEX	`#183A37`
RGB	`rgb(24, 58, 55)`
RGB percent	`rgb(9.4%, 22.7%, 21.6%)`
HSL	`hsl(175, 41%, 16%)`
HSV / HSB	`hsv(175, 59%, 23%)`
CMYK	`cmyk(59%, 0%, 5%, 77%)`
CIE LAB	`lab(21.93, -13.24, -1.92)`
CIE LCH	`lch(21.93, 13.38, 188.27)`
CIE XYZ	`xyz(2.579, 3.496, 4.153)`
Decimal	`1587767`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #183A37, 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 #183A37	Ratio	AA	AAA	AA large
Sample text	1.7:1	Fail	Fail	Fail
Sample text	12.36:1	Pass	Pass	Pass

#183A37 as text on	Ratio	AA	AAA	AA large
Sample text	12.36:1	Pass	Pass	Pass
Sample text	1.7:1	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 #183A37 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #183a37; }
.text { color: #183a37; }
.border { border: 2px solid #183a37; }
.transparent { background-color: rgb(24 58 55 / 50%); }
.gradient { background: linear-gradient(to right, #183a37, #182c3a); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Gray.

Questions

What color is #183A37?: #183A37 is a very dark, desaturated spring green, closest to the named color Botanical Night. It belongs to the teal family of colors.
What is the RGB value of #183A37?: The RGB value is 24, 58, 55: 24 red, 58 green and 55 blue on a 0 to 255 scale.
What is the complementary color of #183A37?: The complementary color is #3A181B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #183A37?: White text. Black text has a contrast ratio of 1.7:1 and white text 12.36:1. WCAG asks for at least 4.5:1 for normal text.