What color is #373E5B?

#373E5B 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 #373E5B?

The RGB value is 55, 62, 91: 55 red, 62 green and 91 blue on a 0 to 255 scale.

What is the complementary color of #373E5B?

The complementary color is #5B5437, found by rotating the hue 180° on the color wheel.

Is black or white text better on #373E5B?

White text. Black text has a contrast ratio of 2:1 and white text 10.49:1. WCAG asks for at least 4.5:1 for normal text.

#373E5B color

#373E5B rgb(55, 62, 91)

Shades of blue

The hex color #373E5B is a dark, grayish blue.

In the RGB color model it is made of 21.6% red, 24.3% green and 35.7% blue (55, 62, 91).

Its hue angle is 228°, with 25% saturation and 29% lightness. For print, the CMYK equivalent is 40% cyan, 32% magenta, 0% yellow and 64% black.

The closest named color is Mediaeval Blue (#2E3858), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 10.49:1).

#373E5B color codes

HEX	`#373E5B`
RGB	`rgb(55, 62, 91)`
RGB percent	`rgb(21.6%, 24.3%, 35.7%)`
HSL	`hsl(228, 25%, 29%)`
HSV / HSB	`hsv(228, 40%, 36%)`
CMYK	`cmyk(40%, 32%, 0%, 64%)`
CIE LAB	`lab(26.77, 5.29, -18.23)`
CIE LCH	`lch(26.77, 18.98, 286.17)`
CIE XYZ	`xyz(5.186, 5.013, 10.59)`
Decimal	`3620443`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #373E5B, 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 #373E5B	Ratio	AA	AAA	AA large
Sample text	2:1	Fail	Fail	Fail
Sample text	10.49:1	Pass	Pass	Pass

#373E5B as text on	Ratio	AA	AAA	AA large
Sample text	10.49:1	Pass	Pass	Pass
Sample text	2:1	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 #373E5B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #373e5b; }
.text { color: #373e5b; }
.border { border: 2px solid #373e5b; }
.transparent { background-color: rgb(55 62 91 / 50%); }
.gradient { background: linear-gradient(to right, #373e5b, #42375b); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #373E5B?: #373E5B 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 #373E5B?: The RGB value is 55, 62, 91: 55 red, 62 green and 91 blue on a 0 to 255 scale.
What is the complementary color of #373E5B?: The complementary color is #5B5437, found by rotating the hue 180° on the color wheel.
Is black or white text better on #373E5B?: White text. Black text has a contrast ratio of 2:1 and white text 10.49:1. WCAG asks for at least 4.5:1 for normal text.