What color is #636E8B?

#636E8B is a grayish blue, closest to the named color Haunt Mist. It belongs to the blue family of colors.

What is the RGB value of #636E8B?

The RGB value is 99, 110, 139: 99 red, 110 green and 139 blue on a 0 to 255 scale.

What is the complementary color of #636E8B?

The complementary color is #8B8063, found by rotating the hue 180° on the color wheel.

Is black or white text better on #636E8B?

White text. Black text has a contrast ratio of 4.13:1 and white text 5.08:1. WCAG asks for at least 4.5:1 for normal text.

#636E8B color

#636E8B rgb(99, 110, 139)

Shades of blue

The hex color #636E8B is a grayish blue.

In the RGB color model it is made of 38.8% red, 43.1% green and 54.5% blue (99, 110, 139).

Its hue angle is 223°, with 17% saturation and 47% lightness. For print, the CMYK equivalent is 29% cyan, 21% magenta, 0% yellow and 45% black.

The closest named color is Haunt Mist (#5F6D91), a difference of 2.2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 5.08:1).

#636E8B color codes

HEX	`#636E8B`
RGB	`rgb(99, 110, 139)`
RGB percent	`rgb(38.8%, 43.1%, 54.5%)`
HSL	`hsl(223, 17%, 47%)`
HSV / HSB	`hsv(223, 29%, 55%)`
CMYK	`cmyk(29%, 21%, 0%, 45%)`
CIE LAB	`lab(46.54, 2.91, -17.26)`
CIE LCH	`lch(46.54, 17.51, 279.59)`
CIE XYZ	`xyz(15.38, 15.668, 26.635)`
Decimal	`6516363`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #636E8B, 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 #636E8B	Ratio	AA	AAA	AA large
Sample text	4.13:1	Fail	Fail	Pass
Sample text	5.08:1	Pass	Fail	Pass

#636E8B as text on	Ratio	AA	AAA	AA large
Sample text	5.08:1	Pass	Fail	Pass
Sample text	4.13:1	Fail	Fail	Pass

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 #636E8B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #636e8b; }
.text { color: #636e8b; }
.border { border: 2px solid #636e8b; }
.transparent { background-color: rgb(99 110 139 / 50%); }
.gradient { background: linear-gradient(to right, #636e8b, #6c638b); }

Background

Text color

Border

Similar colors

Closest common color name: Slate Gray.

Questions

What color is #636E8B?: #636E8B is a grayish blue, closest to the named color Haunt Mist. It belongs to the blue family of colors.
What is the RGB value of #636E8B?: The RGB value is 99, 110, 139: 99 red, 110 green and 139 blue on a 0 to 255 scale.
What is the complementary color of #636E8B?: The complementary color is #8B8063, found by rotating the hue 180° on the color wheel.
Is black or white text better on #636E8B?: White text. Black text has a contrast ratio of 4.13:1 and white text 5.08:1. WCAG asks for at least 4.5:1 for normal text.