What color is #637A6A?

#637A6A is a grayish green, closest to the named color Ecological. It belongs to the green family of colors.

What is the RGB value of #637A6A?

The RGB value is 99, 122, 106: 99 red, 122 green and 106 blue on a 0 to 255 scale.

What is the complementary color of #637A6A?

The complementary color is #7A6373, found by rotating the hue 180° on the color wheel.

Is black or white text better on #637A6A?

White text. Black text has a contrast ratio of 4.52:1 and white text 4.64:1. WCAG asks for at least 4.5:1 for normal text.

#637A6A color

#637A6A rgb(99, 122, 106)

Shades of green

The hex color #637A6A is a grayish green.

In the RGB color model it is made of 38.8% red, 47.8% green and 41.6% blue (99, 122, 106).

Its hue angle is 138°, with 10% saturation and 43% lightness. For print, the CMYK equivalent is 19% cyan, 0% magenta, 13% yellow and 52% black.

The closest named color is Ecological (#677F70), a difference of 2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 4.64:1).

#637A6A color codes

HEX	`#637A6A`
RGB	`rgb(99, 122, 106)`
RGB percent	`rgb(38.8%, 47.8%, 41.6%)`
HSL	`hsl(138, 10%, 43%)`
HSV / HSB	`hsv(138, 19%, 48%)`
CMYK	`cmyk(19%, 0%, 13%, 52%)`
CIE LAB	`lab(49.02, -11.84, 6)`
CIE LCH	`lch(49.02, 13.28, 153.12)`
CIE XYZ	`xyz(14.706, 17.612, 16.258)`
Decimal	`6519402`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #637A6A, 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 #637A6A	Ratio	AA	AAA	AA large
Sample text	4.52:1	Pass	Fail	Pass
Sample text	4.64:1	Pass	Fail	Pass

#637A6A as text on	Ratio	AA	AAA	AA large
Sample text	4.64:1	Pass	Fail	Pass
Sample text	4.52:1	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 #637A6A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #637a6a; }
.text { color: #637a6a; }
.border { border: 2px solid #637a6a; }
.transparent { background-color: rgb(99 122 106 / 50%); }
.gradient { background: linear-gradient(to right, #637a6a, #637a76); }

Background

Text color

Border

Similar colors

Questions

What color is #637A6A?: #637A6A is a grayish green, closest to the named color Ecological. It belongs to the green family of colors.
What is the RGB value of #637A6A?: The RGB value is 99, 122, 106: 99 red, 122 green and 106 blue on a 0 to 255 scale.
What is the complementary color of #637A6A?: The complementary color is #7A6373, found by rotating the hue 180° on the color wheel.
Is black or white text better on #637A6A?: White text. Black text has a contrast ratio of 4.52:1 and white text 4.64:1. WCAG asks for at least 4.5:1 for normal text.