What color is #638180?

#638180 is a grayish cyan, closest to the named color Stream Burble. It belongs to the gray family of colors.

What is the RGB value of #638180?

The RGB value is 99, 129, 128: 99 red, 129 green and 128 blue on a 0 to 255 scale.

What is the complementary color of #638180?

The complementary color is #816364, found by rotating the hue 180° on the color wheel.

Is black or white text better on #638180?

Black text. Black text has a contrast ratio of 4.98:1 and white text 4.21:1. WCAG asks for at least 4.5:1 for normal text.

#638180 color

#638180 rgb(99, 129, 128)

Shades of gray

The hex color #638180 is a grayish cyan.

In the RGB color model it is made of 38.8% red, 50.6% green and 50.2% blue (99, 129, 128).

Its hue angle is 178°, with 13% saturation and 45% lightness. For print, the CMYK equivalent is 23% cyan, 0% magenta, 1% yellow and 49% black.

The closest named color is Stream Burble (#5E7E7D), a difference of 1.4 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 4.98:1).

#638180 color codes

HEX	`#638180`
RGB	`rgb(99, 129, 128)`
RGB percent	`rgb(38.8%, 50.6%, 50.2%)`
HSL	`hsl(178, 13%, 45%)`
HSV / HSB	`hsv(178, 23%, 51%)`
CMYK	`cmyk(23%, 0%, 1%, 49%)`
CIE LAB	`lab(51.74, -10.86, -2.96)`
CIE LCH	`lch(51.74, 11.25, 195.26)`
CIE XYZ	`xyz(16.891, 19.911, 23.371)`
Decimal	`6521216`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #638180, 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 #638180	Ratio	AA	AAA	AA large
Sample text	4.98:1	Pass	Fail	Pass
Sample text	4.21:1	Fail	Fail	Pass

#638180 as text on	Ratio	AA	AAA	AA large
Sample text	4.21:1	Fail	Fail	Pass
Sample text	4.98:1	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 #638180 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #638180; }
.text { color: #638180; }
.border { border: 2px solid #638180; }
.transparent { background-color: rgb(99 129 128 / 50%); }
.gradient { background: linear-gradient(to right, #638180, #637381); }

Background

Text color

Border

Similar colors

Closest common color name: Juniper.

Questions

What color is #638180?: #638180 is a grayish cyan, closest to the named color Stream Burble. It belongs to the gray family of colors.
What is the RGB value of #638180?: The RGB value is 99, 129, 128: 99 red, 129 green and 128 blue on a 0 to 255 scale.
What is the complementary color of #638180?: The complementary color is #816364, found by rotating the hue 180° on the color wheel.
Is black or white text better on #638180?: Black text. Black text has a contrast ratio of 4.98:1 and white text 4.21:1. WCAG asks for at least 4.5:1 for normal text.