What color is #639B8A?

#639B8A is a grayish spring green, closest to the named color Emerald Oasis. It belongs to the green family of colors.

What is the RGB value of #639B8A?

The RGB value is 99, 155, 138: 99 red, 155 green and 138 blue on a 0 to 255 scale.

What is the complementary color of #639B8A?

The complementary color is #9B6374, found by rotating the hue 180° on the color wheel.

Is black or white text better on #639B8A?

Black text. Black text has a contrast ratio of 6.59:1 and white text 3.19:1. WCAG asks for at least 4.5:1 for normal text.

#639B8A color

#639B8A rgb(99, 155, 138)

Shades of green

The hex color #639B8A is a grayish spring green.

In the RGB color model it is made of 38.8% red, 60.8% green and 54.1% blue (99, 155, 138).

Its hue angle is 162°, with 22% saturation and 50% lightness. For print, the CMYK equivalent is 36% cyan, 0% magenta, 11% yellow and 39% black.

The closest named color is Emerald Oasis (#67A195), a difference of 2.8 ΔE, a small difference.

Black text is the more readable choice on this background (contrast 6.59:1).

#639B8A color codes

HEX	`#639B8A`
RGB	`rgb(99, 155, 138)`
RGB percent	`rgb(38.8%, 60.8%, 54.1%)`
HSL	`hsl(162, 22%, 50%)`
HSV / HSB	`hsv(162, 36%, 61%)`
CMYK	`cmyk(36%, 0%, 11%, 39%)`
CIE LAB	`lab(59.82, -22.4, 3.1)`
CIE LCH	`lch(59.82, 22.61, 172.13)`
CIE XYZ	`xyz(21.453, 27.929, 28.3)`
Decimal	`6527882`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #639B8A, 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 #639B8A	Ratio	AA	AAA	AA large
Sample text	6.59:1	Pass	Fail	Pass
Sample text	3.19:1	Fail	Fail	Pass

#639B8A as text on	Ratio	AA	AAA	AA large
Sample text	3.19:1	Fail	Fail	Pass
Sample text	6.59:1	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 #639B8A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #639b8a; }
.text { color: #639b8a; }
.border { border: 2px solid #639b8a; }
.transparent { background-color: rgb(99 155 138 / 50%); }
.gradient { background: linear-gradient(to right, #639b8a, #63909b); }

Background

Text color

Border

Similar colors

Closest common color name: Cadet Blue.

Questions

What color is #639B8A?: #639B8A is a grayish spring green, closest to the named color Emerald Oasis. It belongs to the green family of colors.
What is the RGB value of #639B8A?: The RGB value is 99, 155, 138: 99 red, 155 green and 138 blue on a 0 to 255 scale.
What is the complementary color of #639B8A?: The complementary color is #9B6374, found by rotating the hue 180° on the color wheel.
Is black or white text better on #639B8A?: Black text. Black text has a contrast ratio of 6.59:1 and white text 3.19:1. WCAG asks for at least 4.5:1 for normal text.