What color is #373F59?

#373F59 is a dark, grayish blue, closest to the named color Mediaeval Blue. It belongs to the blue family of colors.

What is the RGB value of #373F59?

The RGB value is 55, 63, 89: 55 red, 63 green and 89 blue on a 0 to 255 scale.

What is the complementary color of #373F59?

The complementary color is #595137, found by rotating the hue 180° on the color wheel.

Is black or white text better on #373F59?

White text. Black text has a contrast ratio of 2.02:1 and white text 10.41:1. WCAG asks for at least 4.5:1 for normal text.

#373F59 color

#373F59 rgb(55, 63, 89)

Shades of blue

The hex color #373F59 is a dark, grayish blue.

In the RGB color model it is made of 21.6% red, 24.7% green and 34.9% blue (55, 63, 89).

Its hue angle is 226°, with 24% saturation and 28% lightness. For print, the CMYK equivalent is 38% cyan, 29% magenta, 0% yellow and 65% black.

The closest named color is Mediaeval Blue (#2E3858), a difference of 3.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 10.41:1).

#373F59 color codes

HEX	`#373F59`
RGB	`rgb(55, 63, 89)`
RGB percent	`rgb(21.6%, 24.7%, 34.9%)`
HSL	`hsl(226, 24%, 28%)`
HSV / HSB	`hsv(226, 38%, 35%)`
CMYK	`cmyk(38%, 29%, 0%, 65%)`
CIE LAB	`lab(26.98, 3.99, -16.6)`
CIE LCH	`lch(26.98, 17.07, 283.52)`
CIE XYZ	`xyz(5.156, 5.088, 10.16)`
Decimal	`3620697`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #373F59, 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 #373F59	Ratio	AA	AAA	AA large
Sample text	2.02:1	Fail	Fail	Fail
Sample text	10.41:1	Pass	Pass	Pass

#373F59 as text on	Ratio	AA	AAA	AA large
Sample text	10.41:1	Pass	Pass	Pass
Sample text	2.02:1	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 #373F59 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #373f59; }
.text { color: #373f59; }
.border { border: 2px solid #373f59; }
.transparent { background-color: rgb(55 63 89 / 50%); }
.gradient { background: linear-gradient(to right, #373f59, #403759); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #373F59?: #373F59 is a dark, grayish blue, closest to the named color Mediaeval Blue. It belongs to the blue family of colors.
What is the RGB value of #373F59?: The RGB value is 55, 63, 89: 55 red, 63 green and 89 blue on a 0 to 255 scale.
What is the complementary color of #373F59?: The complementary color is #595137, found by rotating the hue 180° on the color wheel.
Is black or white text better on #373F59?: White text. Black text has a contrast ratio of 2.02:1 and white text 10.41:1. WCAG asks for at least 4.5:1 for normal text.