What color is #37575B?

#37575B is a dark, grayish cyan, closest to the named color Arctic Nights. It belongs to the gray family of colors.

What is the RGB value of #37575B?

The RGB value is 55, 87, 91: 55 red, 87 green and 91 blue on a 0 to 255 scale.

What is the complementary color of #37575B?

The complementary color is #5B3B37, found by rotating the hue 180° on the color wheel.

Is black or white text better on #37575B?

White text. Black text has a contrast ratio of 2.68:1 and white text 7.85:1. WCAG asks for at least 4.5:1 for normal text.

#37575B color

#37575B rgb(55, 87, 91)

Shades of gray

The hex color #37575B is a dark, grayish cyan.

In the RGB color model it is made of 21.6% red, 34.1% green and 35.7% blue (55, 87, 91).

Its hue angle is 187°, with 25% saturation and 29% lightness. For print, the CMYK equivalent is 40% cyan, 4% magenta, 0% yellow and 64% black.

The closest named color is Arctic Nights (#345C61), a difference of 2.3 ΔE, a small difference.

White text is the more readable choice on this background (contrast 7.85:1).

#37575B color codes

HEX	`#37575B`
RGB	`rgb(55, 87, 91)`
RGB percent	`rgb(21.6%, 34.1%, 35.7%)`
HSL	`hsl(187, 25%, 29%)`
HSV / HSB	`hsv(187, 40%, 36%)`
CMYK	`cmyk(40%, 4%, 0%, 64%)`
CIE LAB	`lab(34.77, -10.54, -6.04)`
CIE LCH	`lch(34.77, 12.15, 209.82)`
CIE XYZ	`xyz(6.871, 8.384, 11.152)`
Decimal	`3626843`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #37575B, 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 #37575B	Ratio	AA	AAA	AA large
Sample text	2.68:1	Fail	Fail	Fail
Sample text	7.85:1	Pass	Pass	Pass

#37575B as text on	Ratio	AA	AAA	AA large
Sample text	7.85:1	Pass	Pass	Pass
Sample text	2.68:1	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 #37575B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #37575b; }
.text { color: #37575b; }
.border { border: 2px solid #37575b; }
.transparent { background-color: rgb(55 87 91 / 50%); }
.gradient { background: linear-gradient(to right, #37575b, #37455b); }

Background

Text color

Border

Similar colors

Questions

What color is #37575B?: #37575B is a dark, grayish cyan, closest to the named color Arctic Nights. It belongs to the gray family of colors.
What is the RGB value of #37575B?: The RGB value is 55, 87, 91: 55 red, 87 green and 91 blue on a 0 to 255 scale.
What is the complementary color of #37575B?: The complementary color is #5B3B37, found by rotating the hue 180° on the color wheel.
Is black or white text better on #37575B?: White text. Black text has a contrast ratio of 2.68:1 and white text 7.85:1. WCAG asks for at least 4.5:1 for normal text.