What color is #637381?

#637381 is a grayish azure, closest to the named color Plumbeous. It belongs to the gray family of colors.

What is the RGB value of #637381?

The RGB value is 99, 115, 129: 99 red, 115 green and 129 blue on a 0 to 255 scale.

What is the complementary color of #637381?

The complementary color is #817163, found by rotating the hue 180° on the color wheel.

Is black or white text better on #637381?

White text. Black text has a contrast ratio of 4.3:1 and white text 4.88:1. WCAG asks for at least 4.5:1 for normal text.

#637381 color

#637381 rgb(99, 115, 129)

Shades of gray

The hex color #637381 is a grayish azure.

In the RGB color model it is made of 38.8% red, 45.1% green and 50.6% blue (99, 115, 129).

Its hue angle is 208°, with 13% saturation and 45% lightness. For print, the CMYK equivalent is 23% cyan, 11% magenta, 0% yellow and 49% black.

The closest named color is Plumbeous (#5C7287), a difference of 2.9 ΔE, a small difference.

White text is the more readable choice on this background (contrast 4.88:1).

#637381 color codes

HEX	`#637381`
RGB	`rgb(99, 115, 129)`
RGB percent	`rgb(38.8%, 45.1%, 50.6%)`
HSL	`hsl(208, 13%, 45%)`
HSV / HSB	`hsv(208, 23%, 51%)`
CMYK	`cmyk(23%, 11%, 0%, 49%)`
CIE LAB	`lab(47.62, -2.61, -9.67)`
CIE LCH	`lch(47.62, 10.02, 254.89)`
CIE XYZ	`xyz(15.238, 16.499, 23.146)`
Decimal	`6517633`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #637381, 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 #637381	Ratio	AA	AAA	AA large
Sample text	4.3:1	Fail	Fail	Pass
Sample text	4.88:1	Pass	Fail	Pass

#637381 as text on	Ratio	AA	AAA	AA large
Sample text	4.88:1	Pass	Fail	Pass
Sample text	4.3:1	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 #637381 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #637381; }
.text { color: #637381; }
.border { border: 2px solid #637381; }
.transparent { background-color: rgb(99 115 129 / 50%); }
.gradient { background: linear-gradient(to right, #637381, #636481); }

Background

Text color

Border

Similar colors

Closest common color name: Slate Gray.

Questions

What color is #637381?: #637381 is a grayish azure, closest to the named color Plumbeous. It belongs to the gray family of colors.
What is the RGB value of #637381?: The RGB value is 99, 115, 129: 99 red, 115 green and 129 blue on a 0 to 255 scale.
What is the complementary color of #637381?: The complementary color is #817163, found by rotating the hue 180° on the color wheel.
Is black or white text better on #637381?: White text. Black text has a contrast ratio of 4.3:1 and white text 4.88:1. WCAG asks for at least 4.5:1 for normal text.