What color is #21333B?

#21333B is a very dark, desaturated azure, closest to the named color Petrol Slumber. It belongs to the gray family of colors.

What is the RGB value of #21333B?

The RGB value is 33, 51, 59: 33 red, 51 green and 59 blue on a 0 to 255 scale.

What is the complementary color of #21333B?

The complementary color is #3B2921, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21333B?

White text. Black text has a contrast ratio of 1.6:1 and white text 13.11:1. WCAG asks for at least 4.5:1 for normal text.

#21333B color

#21333B rgb(33, 51, 59)

Shades of gray

The hex color #21333B is a very dark, desaturated azure.

In the RGB color model it is made of 12.9% red, 20% green and 23.1% blue (33, 51, 59).

Its hue angle is 198°, with 28% saturation and 18% lightness. For print, the CMYK equivalent is 44% cyan, 14% magenta, 0% yellow and 77% black.

The closest named color is Petrol Slumber (#243640), a difference of 1.6 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 13.11:1).

#21333B color codes

HEX	`#21333B`
RGB	`rgb(33, 51, 59)`
RGB percent	`rgb(12.9%, 20%, 23.1%)`
HSL	`hsl(198, 28%, 18%)`
HSV / HSB	`hsv(198, 44%, 23%)`
CMYK	`cmyk(44%, 14%, 0%, 77%)`
CIE LAB	`lab(20.07, -4.82, -7.37)`
CIE LCH	`lch(20.07, 8.8, 236.81)`
CIE XYZ	`xyz(2.6, 3.007, 4.58)`
Decimal	`2175803`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21333B, 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 #21333B	Ratio	AA	AAA	AA large
Sample text	1.6:1	Fail	Fail	Fail
Sample text	13.11:1	Pass	Pass	Pass

#21333B as text on	Ratio	AA	AAA	AA large
Sample text	13.11:1	Pass	Pass	Pass
Sample text	1.6:1	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 #21333B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21333b; }
.text { color: #21333b; }
.border { border: 2px solid #21333b; }
.transparent { background-color: rgb(33 51 59 / 50%); }
.gradient { background: linear-gradient(to right, #21333b, #21263b); }

Background

Text color

Border

Similar colors

Questions

What color is #21333B?: #21333B is a very dark, desaturated azure, closest to the named color Petrol Slumber. It belongs to the gray family of colors.
What is the RGB value of #21333B?: The RGB value is 33, 51, 59: 33 red, 51 green and 59 blue on a 0 to 255 scale.
What is the complementary color of #21333B?: The complementary color is #3B2921, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21333B?: White text. Black text has a contrast ratio of 1.6:1 and white text 13.11:1. WCAG asks for at least 4.5:1 for normal text.