What color is #15312D?

#15312D 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 #15312D?

The RGB value is 21, 49, 45: 21 red, 49 green and 45 blue on a 0 to 255 scale.

What is the complementary color of #15312D?

The complementary color is #311519, found by rotating the hue 180° on the color wheel.

Is black or white text better on #15312D?

White text. Black text has a contrast ratio of 1.51:1 and white text 13.92:1. WCAG asks for at least 4.5:1 for normal text.

#15312D color

#15312D rgb(21, 49, 45)

Shades of black

The hex color #15312D is a very dark, desaturated spring green.

In the RGB color model it is made of 8.2% red, 19.2% green and 17.6% blue (21, 49, 45).

Its hue angle is 171°, with 40% saturation and 14% lightness. For print, the CMYK equivalent is 57% cyan, 0% magenta, 8% yellow and 81% black.

The closest named color is Swamp Thing (#162825), a difference of 3.9 ΔE, a small difference.

White text is the more readable choice on this background (contrast 13.92:1).

#15312D color codes

HEX	`#15312D`
RGB	`rgb(21, 49, 45)`
RGB percent	`rgb(8.2%, 19.2%, 17.6%)`
HSL	`hsl(171, 40%, 14%)`
HSV / HSB	`hsv(171, 57%, 19%)`
CMYK	`cmyk(57%, 0%, 8%, 81%)`
CIE LAB	`lab(18.12, -11.83, -0.72)`
CIE LCH	`lch(18.12, 11.86, 183.48)`
CIE XYZ	`xyz(1.881, 2.545, 2.874)`
Decimal	`1388845`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #15312D, 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 #15312D	Ratio	AA	AAA	AA large
Sample text	1.51:1	Fail	Fail	Fail
Sample text	13.92:1	Pass	Pass	Pass

#15312D as text on	Ratio	AA	AAA	AA large
Sample text	13.92:1	Pass	Pass	Pass
Sample text	1.51:1	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 #15312D looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #15312d; }
.text { color: #15312d; }
.border { border: 2px solid #15312d; }
.transparent { background-color: rgb(21 49 45 / 50%); }
.gradient { background: linear-gradient(to right, #15312d, #152731); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Gray.

Questions

What color is #15312D?: #15312D 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 #15312D?: The RGB value is 21, 49, 45: 21 red, 49 green and 45 blue on a 0 to 255 scale.
What is the complementary color of #15312D?: The complementary color is #311519, found by rotating the hue 180° on the color wheel.
Is black or white text better on #15312D?: White text. Black text has a contrast ratio of 1.51:1 and white text 13.92:1. WCAG asks for at least 4.5:1 for normal text.