What color is #21588A?

#21588A is a dark, moderate azure, closest to the named color Dark Denim. It belongs to the blue family of colors.

What is the RGB value of #21588A?

The RGB value is 33, 88, 138: 33 red, 88 green and 138 blue on a 0 to 255 scale.

What is the complementary color of #21588A?

The complementary color is #8A5321, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21588A?

White text. Black text has a contrast ratio of 2.83:1 and white text 7.43:1. WCAG asks for at least 4.5:1 for normal text.

#21588A color

#21588A rgb(33, 88, 138)

Shades of blue

The hex color #21588A is a dark, moderate azure.

In the RGB color model it is made of 12.9% red, 34.5% green and 54.1% blue (33, 88, 138).

Its hue angle is 209°, with 61% saturation and 34% lightness. For print, the CMYK equivalent is 76% cyan, 36% magenta, 0% yellow and 46% black.

The closest named color is Dark Denim (#005588), a difference of 2.3 ΔE, a small difference.

White text is the more readable choice on this background (contrast 7.43:1).

#21588A color codes

HEX	`#21588A`
RGB	`rgb(33, 88, 138)`
RGB percent	`rgb(12.9%, 34.5%, 54.1%)`
HSL	`hsl(209, 61%, 34%)`
HSV / HSB	`hsv(209, 76%, 54%)`
CMYK	`cmyk(76%, 36%, 0%, 46%)`
CIE LAB	`lab(36.25, 0.16, -32.95)`
CIE LCH	`lch(36.25, 32.95, 270.28)`
CIE XYZ	`xyz(8.703, 9.137, 25.345)`
Decimal	`2185354`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21588A, 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 #21588A	Ratio	AA	AAA	AA large
Sample text	2.83:1	Fail	Fail	Fail
Sample text	7.43:1	Pass	Pass	Pass

#21588A as text on	Ratio	AA	AAA	AA large
Sample text	7.43:1	Pass	Pass	Pass
Sample text	2.83:1	Fail	Fail	Fail

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 #21588A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21588a; }
.text { color: #21588a; }
.border { border: 2px solid #21588a; }
.transparent { background-color: rgb(33 88 138 / 50%); }
.gradient { background: linear-gradient(to right, #21588a, #21248a); }

Background

Text color

Border

Similar colors

Closest common color name: Denim.

Questions

What color is #21588A?: #21588A is a dark, moderate azure, closest to the named color Dark Denim. It belongs to the blue family of colors.
What is the RGB value of #21588A?: The RGB value is 33, 88, 138: 33 red, 88 green and 138 blue on a 0 to 255 scale.
What is the complementary color of #21588A?: The complementary color is #8A5321, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21588A?: White text. Black text has a contrast ratio of 2.83:1 and white text 7.43:1. WCAG asks for at least 4.5:1 for normal text.