What color is #21383D?

#21383D is a very dark, desaturated cyan, closest to the named color Royal Neptune. It belongs to the gray family of colors.

What is the RGB value of #21383D?

The RGB value is 33, 56, 61: 33 red, 56 green and 61 blue on a 0 to 255 scale.

What is the complementary color of #21383D?

The complementary color is #3D2621, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21383D?

White text. Black text has a contrast ratio of 1.7:1 and white text 12.37:1. WCAG asks for at least 4.5:1 for normal text.

#21383D color

#21383D rgb(33, 56, 61)

Shades of gray

The hex color #21383D is a very dark, desaturated cyan.

In the RGB color model it is made of 12.9% red, 22% green and 23.9% blue (33, 56, 61).

Its hue angle is 191°, with 30% saturation and 18% lightness. For print, the CMYK equivalent is 46% cyan, 8% magenta, 0% yellow and 76% black.

The closest named color is Royal Neptune (#1C3B42), a difference of 2.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 12.37:1).

#21383D color codes

HEX	`#21383D`
RGB	`rgb(33, 56, 61)`
RGB percent	`rgb(12.9%, 22%, 23.9%)`
HSL	`hsl(191, 30%, 18%)`
HSV / HSB	`hsv(191, 46%, 24%)`
CMYK	`cmyk(46%, 8%, 0%, 76%)`
CIE LAB	`lab(21.9, -7.43, -5.96)`
CIE LCH	`lch(21.9, 9.53, 218.73)`
CIE XYZ	`xyz(2.883, 3.488, 4.935)`
Decimal	`2177085`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21383D, 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 #21383D	Ratio	AA	AAA	AA large
Sample text	1.7:1	Fail	Fail	Fail
Sample text	12.37:1	Pass	Pass	Pass

#21383D as text on	Ratio	AA	AAA	AA large
Sample text	12.37:1	Pass	Pass	Pass
Sample text	1.7:1	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 #21383D looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21383d; }
.text { color: #21383d; }
.border { border: 2px solid #21383d; }
.transparent { background-color: rgb(33 56 61 / 50%); }
.gradient { background: linear-gradient(to right, #21383d, #212a3d); }

Background

Text color

Border

Similar colors

Closest common color name: Gunmetal.

Questions

What color is #21383D?: #21383D is a very dark, desaturated cyan, closest to the named color Royal Neptune. It belongs to the gray family of colors.
What is the RGB value of #21383D?: The RGB value is 33, 56, 61: 33 red, 56 green and 61 blue on a 0 to 255 scale.
What is the complementary color of #21383D?: The complementary color is #3D2621, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21383D?: White text. Black text has a contrast ratio of 1.7:1 and white text 12.37:1. WCAG asks for at least 4.5:1 for normal text.