What color is #0B211F?

#0B211F is a very dark, desaturated spring green, closest to the named color Swamp Thing. It belongs to the black family of colors.

What is the RGB value of #0B211F?

The RGB value is 11, 33, 31: 11 red, 33 green and 31 blue on a 0 to 255 scale.

What is the complementary color of #0B211F?

The complementary color is #210B0D, found by rotating the hue 180° on the color wheel.

Is black or white text better on #0B211F?

White text. Black text has a contrast ratio of 1.25:1 and white text 16.78:1. WCAG asks for at least 4.5:1 for normal text.

#0B211F color

#0B211F rgb(11, 33, 31)

Shades of black

The hex color #0B211F is a very dark, desaturated spring green.

In the RGB color model it is made of 4.3% red, 12.9% green and 12.2% blue (11, 33, 31).

Its hue angle is 175°, with 50% saturation and 9% lightness. For print, the CMYK equivalent is 67% cyan, 0% magenta, 6% yellow and 87% black.

The closest named color is Swamp Thing (#162825), a difference of 2.6 ΔE, a small difference.

White text is the more readable choice on this background (contrast 16.78:1).

#0B211F color codes

HEX	`#0B211F`
RGB	`rgb(11, 33, 31)`
RGB percent	`rgb(4.3%, 12.9%, 12.2%)`
HSL	`hsl(175, 50%, 9%)`
HSV / HSB	`hsv(175, 67%, 13%)`
CMYK	`cmyk(67%, 0%, 6%, 87%)`
CIE LAB	`lab(10.98, -9.37, -1.33)`
CIE LCH	`lch(10.98, 9.46, 188.05)`
CIE XYZ	`xyz(0.929, 1.258, 1.49)`
Decimal	`729375`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #0B211F, 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 #0B211F	Ratio	AA	AAA	AA large
Sample text	1.25:1	Fail	Fail	Fail
Sample text	16.78:1	Pass	Pass	Pass

#0B211F as text on	Ratio	AA	AAA	AA large
Sample text	16.78:1	Pass	Pass	Pass
Sample text	1.25:1	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 #0B211F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #0b211f; }
.text { color: #0b211f; }
.border { border: 2px solid #0b211f; }
.transparent { background-color: rgb(11 33 31 / 50%); }
.gradient { background: linear-gradient(to right, #0b211f, #0b1821); }

Background

Text color

Border

Similar colors

Closest common color name: Gunmetal.

Questions

What color is #0B211F?: #0B211F is a very dark, desaturated spring green, closest to the named color Swamp Thing. It belongs to the black family of colors.
What is the RGB value of #0B211F?: The RGB value is 11, 33, 31: 11 red, 33 green and 31 blue on a 0 to 255 scale.
What is the complementary color of #0B211F?: The complementary color is #210B0D, found by rotating the hue 180° on the color wheel.
Is black or white text better on #0B211F?: White text. Black text has a contrast ratio of 1.25:1 and white text 16.78:1. WCAG asks for at least 4.5:1 for normal text.