What color is #637F79?

#637F79 is a grayish spring green, closest to the named color Underwater World. It belongs to the gray family of colors.

What is the RGB value of #637F79?

The RGB value is 99, 127, 121: 99 red, 127 green and 121 blue on a 0 to 255 scale.

What is the complementary color of #637F79?

The complementary color is #7F6369, found by rotating the hue 180° on the color wheel.

Is black or white text better on #637F79?

Black text. Black text has a contrast ratio of 4.84:1 and white text 4.34:1. WCAG asks for at least 4.5:1 for normal text.

#637F79 color

#637F79 rgb(99, 127, 121)

Shades of gray

The hex color #637F79 is a grayish spring green.

In the RGB color model it is made of 38.8% red, 49.8% green and 47.5% blue (99, 127, 121).

Its hue angle is 167°, with 12% saturation and 44% lightness. For print, the CMYK equivalent is 22% cyan, 0% magenta, 5% yellow and 50% black.

The closest named color is Underwater World (#657F7A), a difference of 0.8 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 4.84:1).

#637F79 color codes

HEX	`#637F79`
RGB	`rgb(99, 127, 121)`
RGB percent	`rgb(38.8%, 49.8%, 47.5%)`
HSL	`hsl(167, 12%, 44%)`
HSV / HSB	`hsv(167, 22%, 50%)`
CMYK	`cmyk(22%, 0%, 5%, 50%)`
CIE LAB	`lab(50.93, -11.37, -0.04)`
CIE LCH	`lch(50.93, 11.37, 180.21)`
CIE XYZ	`xyz(16.185, 19.211, 20.941)`
Decimal	`6520697`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #637F79, 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 #637F79	Ratio	AA	AAA	AA large
Sample text	4.84:1	Pass	Fail	Pass
Sample text	4.34:1	Fail	Fail	Pass

#637F79 as text on	Ratio	AA	AAA	AA large
Sample text	4.34:1	Fail	Fail	Pass
Sample text	4.84:1	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 #637F79 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #637f79; }
.text { color: #637f79; }
.border { border: 2px solid #637f79; }
.transparent { background-color: rgb(99 127 121 / 50%); }
.gradient { background: linear-gradient(to right, #637f79, #63777f); }

Background

Text color

Border

Similar colors

Closest common color name: Smoke.

Questions

What color is #637F79?: #637F79 is a grayish spring green, closest to the named color Underwater World. It belongs to the gray family of colors.
What is the RGB value of #637F79?: The RGB value is 99, 127, 121: 99 red, 127 green and 121 blue on a 0 to 255 scale.
What is the complementary color of #637F79?: The complementary color is #7F6369, found by rotating the hue 180° on the color wheel.
Is black or white text better on #637F79?: Black text. Black text has a contrast ratio of 4.84:1 and white text 4.34:1. WCAG asks for at least 4.5:1 for normal text.