What color is #21578A?

#21578A is a dark, moderate azure, closest to the named color Blue Chip. It belongs to the blue family of colors.

What is the RGB value of #21578A?

The RGB value is 33, 87, 138: 33 red, 87 green and 138 blue on a 0 to 255 scale.

What is the complementary color of #21578A?

The complementary color is #8A5421, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21578A?

White text. Black text has a contrast ratio of 2.79:1 and white text 7.51:1. WCAG asks for at least 4.5:1 for normal text.

#21578A color

#21578A rgb(33, 87, 138)

Shades of blue

The hex color #21578A is a dark, moderate azure.

In the RGB color model it is made of 12.9% red, 34.1% green and 54.1% blue (33, 87, 138).

Its hue angle is 209°, with 61% saturation and 34% lightness. For print, the CMYK equivalent is 76% cyan, 37% magenta, 0% yellow and 46% black.

The closest named color is Blue Chip (#1D5699), a difference of 2.2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 7.51:1).

#21578A color codes

HEX	`#21578A`
RGB	`rgb(33, 87, 138)`
RGB percent	`rgb(12.9%, 34.1%, 54.1%)`
HSL	`hsl(209, 61%, 34%)`
HSV / HSB	`hsv(209, 76%, 54%)`
CMYK	`cmyk(76%, 37%, 0%, 46%)`
CIE LAB	`lab(35.93, 0.8, -33.44)`
CIE LCH	`lch(35.93, 33.45, 271.37)`
CIE XYZ	`xyz(8.621, 8.974, 25.318)`
Decimal	`2185098`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21578A, 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 #21578A	Ratio	AA	AAA	AA large
Sample text	2.79:1	Fail	Fail	Fail
Sample text	7.51:1	Pass	Pass	Pass

#21578A as text on	Ratio	AA	AAA	AA large
Sample text	7.51:1	Pass	Pass	Pass
Sample text	2.79:1	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 #21578A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21578a; }
.text { color: #21578a; }
.border { border: 2px solid #21578a; }
.transparent { background-color: rgb(33 87 138 / 50%); }
.gradient { background: linear-gradient(to right, #21578a, #21238a); }

Background

Text color

Border

Similar colors

Closest common color name: Sapphire.

Questions

What color is #21578A?: #21578A is a dark, moderate azure, closest to the named color Blue Chip. It belongs to the blue family of colors.
What is the RGB value of #21578A?: The RGB value is 33, 87, 138: 33 red, 87 green and 138 blue on a 0 to 255 scale.
What is the complementary color of #21578A?: The complementary color is #8A5421, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21578A?: White text. Black text has a contrast ratio of 2.79:1 and white text 7.51:1. WCAG asks for at least 4.5:1 for normal text.