What color is #638091?

#638091 is a grayish azure, closest to the named color Whale Shark. It belongs to the blue family of colors.

What is the RGB value of #638091?

The RGB value is 99, 128, 145: 99 red, 128 green and 145 blue on a 0 to 255 scale.

What is the complementary color of #638091?

The complementary color is #917463, found by rotating the hue 180° on the color wheel.

Is black or white text better on #638091?

Black text. Black text has a contrast ratio of 5.03:1 and white text 4.18:1. WCAG asks for at least 4.5:1 for normal text.

#638091 color

#638091 rgb(99, 128, 145)

Shades of blue

The hex color #638091 is a grayish azure.

In the RGB color model it is made of 38.8% red, 50.2% green and 56.9% blue (99, 128, 145).

Its hue angle is 202°, with 19% saturation and 48% lightness. For print, the CMYK equivalent is 32% cyan, 12% magenta, 0% yellow and 43% black.

The closest named color is Whale Shark (#607C8E), a difference of 1.6 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 5.03:1).

#638091 color codes

HEX	`#638091`
RGB	`rgb(99, 128, 145)`
RGB percent	`rgb(38.8%, 50.2%, 56.9%)`
HSL	`hsl(202, 19%, 48%)`
HSV / HSB	`hsv(202, 32%, 57%)`
CMYK	`cmyk(32%, 12%, 0%, 43%)`
CIE LAB	`lab(51.99, -6.06, -12.52)`
CIE LCH	`lch(51.99, 13.91, 244.16)`
CIE XYZ	`xyz(17.974, 20.134, 29.722)`
Decimal	`6520977`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #638091, 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 #638091	Ratio	AA	AAA	AA large
Sample text	5.03:1	Pass	Fail	Pass
Sample text	4.18:1	Fail	Fail	Pass

#638091 as text on	Ratio	AA	AAA	AA large
Sample text	4.18:1	Fail	Fail	Pass
Sample text	5.03:1	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 #638091 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #638091; }
.text { color: #638091; }
.border { border: 2px solid #638091; }
.transparent { background-color: rgb(99 128 145 / 50%); }
.gradient { background: linear-gradient(to right, #638091, #636991); }

Background

Text color

Border

Similar colors

Questions

What color is #638091?: #638091 is a grayish azure, closest to the named color Whale Shark. It belongs to the blue family of colors.
What is the RGB value of #638091?: The RGB value is 99, 128, 145: 99 red, 128 green and 145 blue on a 0 to 255 scale.
What is the complementary color of #638091?: The complementary color is #917463, found by rotating the hue 180° on the color wheel.
Is black or white text better on #638091?: Black text. Black text has a contrast ratio of 5.03:1 and white text 4.18:1. WCAG asks for at least 4.5:1 for normal text.