What color is #21312A?

#21312A is a very dark, grayish spring green, closest to the named color Swamp Thing. It belongs to the black family of colors.

What is the RGB value of #21312A?

The RGB value is 33, 49, 42: 33 red, 49 green and 42 blue on a 0 to 255 scale.

What is the complementary color of #21312A?

The complementary color is #312128, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21312A?

White text. Black text has a contrast ratio of 1.54:1 and white text 13.66:1. WCAG asks for at least 4.5:1 for normal text.

#21312A color

#21312A rgb(33, 49, 42)

Shades of black

The hex color #21312A is a very dark, grayish spring green.

In the RGB color model it is made of 12.9% red, 19.2% green and 16.5% blue (33, 49, 42).

Its hue angle is 154°, with 20% saturation and 16% lightness. For print, the CMYK equivalent is 33% cyan, 0% magenta, 14% yellow and 81% black.

The closest named color is Swamp Thing (#162825), a difference of 3.6 ΔE, a small difference.

White text is the more readable choice on this background (contrast 13.66:1).

#21312A color codes

HEX	`#21312A`
RGB	`rgb(33, 49, 42)`
RGB percent	`rgb(12.9%, 19.2%, 16.5%)`
HSL	`hsl(154, 20%, 16%)`
HSV / HSB	`hsv(154, 33%, 19%)`
CMYK	`cmyk(33%, 0%, 14%, 81%)`
CIE LAB	`lab(18.74, -8.5, 2.34)`
CIE LCH	`lch(18.74, 8.82, 164.59)`
CIE XYZ	`xyz(2.143, 2.687, 2.596)`
Decimal	`2175274`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21312A, 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 #21312A	Ratio	AA	AAA	AA large
Sample text	1.54:1	Fail	Fail	Fail
Sample text	13.66:1	Pass	Pass	Pass

#21312A as text on	Ratio	AA	AAA	AA large
Sample text	13.66:1	Pass	Pass	Pass
Sample text	1.54:1	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 #21312A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21312a; }
.text { color: #21312a; }
.border { border: 2px solid #21312a; }
.transparent { background-color: rgb(33 49 42 / 50%); }
.gradient { background: linear-gradient(to right, #21312a, #213031); }

Background

Text color

Border

Similar colors

Questions

What color is #21312A?: #21312A is a very dark, grayish spring green, closest to the named color Swamp Thing. It belongs to the black family of colors.
What is the RGB value of #21312A?: The RGB value is 33, 49, 42: 33 red, 49 green and 42 blue on a 0 to 255 scale.
What is the complementary color of #21312A?: The complementary color is #312128, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21312A?: White text. Black text has a contrast ratio of 1.54:1 and white text 13.66:1. WCAG asks for at least 4.5:1 for normal text.