What color is #637D83?

#637D83 is a grayish cyan, closest to the named color Catfish. It belongs to the gray family of colors.

What is the RGB value of #637D83?

The RGB value is 99, 125, 131: 99 red, 125 green and 131 blue on a 0 to 255 scale.

What is the complementary color of #637D83?

The complementary color is #836963, found by rotating the hue 180° on the color wheel.

Is black or white text better on #637D83?

Black text. Black text has a contrast ratio of 4.79:1 and white text 4.38:1. WCAG asks for at least 4.5:1 for normal text.

#637D83 color

#637D83 rgb(99, 125, 131)

Shades of gray

The hex color #637D83 is a grayish cyan.

In the RGB color model it is made of 38.8% red, 49% green and 51.4% blue (99, 125, 131).

Its hue angle is 191°, with 14% saturation and 45% lightness. For print, the CMYK equivalent is 24% cyan, 5% magenta, 0% yellow and 49% black.

The closest named color is Catfish (#657D82), a difference of 0.7 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 4.79:1).

#637D83 color codes

HEX	`#637D83`
RGB	`rgb(99, 125, 131)`
RGB percent	`rgb(38.8%, 49%, 51.4%)`
HSL	`hsl(191, 14%, 45%)`
HSV / HSB	`hsv(191, 24%, 51%)`
CMYK	`cmyk(24%, 5%, 0%, 49%)`
CIE LAB	`lab(50.64, -7.89, -6.35)`
CIE LCH	`lch(50.64, 10.12, 218.81)`
CIE XYZ	`xyz(16.575, 18.958, 24.254)`
Decimal	`6520195`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #637D83, 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 #637D83	Ratio	AA	AAA	AA large
Sample text	4.79:1	Pass	Fail	Pass
Sample text	4.38:1	Fail	Fail	Pass

#637D83 as text on	Ratio	AA	AAA	AA large
Sample text	4.38:1	Fail	Fail	Pass
Sample text	4.79:1	Pass	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 #637D83 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #637d83; }
.text { color: #637d83; }
.border { border: 2px solid #637d83; }
.transparent { background-color: rgb(99 125 131 / 50%); }
.gradient { background: linear-gradient(to right, #637d83, #636d83); }

Background

Text color

Border

Similar colors

Closest common color name: Slate Gray.

Questions

What color is #637D83?: #637D83 is a grayish cyan, closest to the named color Catfish. It belongs to the gray family of colors.
What is the RGB value of #637D83?: The RGB value is 99, 125, 131: 99 red, 125 green and 131 blue on a 0 to 255 scale.
What is the complementary color of #637D83?: The complementary color is #836963, found by rotating the hue 180° on the color wheel.
Is black or white text better on #637D83?: Black text. Black text has a contrast ratio of 4.79:1 and white text 4.38:1. WCAG asks for at least 4.5:1 for normal text.