What color is #1F3631?

#1F3631 is a very dark, desaturated spring green, closest to the named color Swamp Thing. It belongs to the gray family of colors.

What is the RGB value of #1F3631?

The RGB value is 31, 54, 49: 31 red, 54 green and 49 blue on a 0 to 255 scale.

What is the complementary color of #1F3631?

The complementary color is #361F24, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1F3631?

White text. Black text has a contrast ratio of 1.63:1 and white text 12.88:1. WCAG asks for at least 4.5:1 for normal text.

#1F3631 color

#1F3631 rgb(31, 54, 49)

Shades of gray

The hex color #1F3631 is a very dark, desaturated spring green.

In the RGB color model it is made of 12.2% red, 21.2% green and 19.2% blue (31, 54, 49).

Its hue angle is 167°, with 27% saturation and 17% lightness. For print, the CMYK equivalent is 43% cyan, 0% magenta, 9% yellow and 79% black.

The closest named color is Swamp Thing (#162825), a difference of 4.6 ΔE, a small difference.

White text is the more readable choice on this background (contrast 12.88:1).

#1F3631 color codes

HEX	`#1F3631`
RGB	`rgb(31, 54, 49)`
RGB percent	`rgb(12.2%, 21.2%, 19.2%)`
HSL	`hsl(167, 27%, 17%)`
HSV / HSB	`hsv(167, 43%, 21%)`
CMYK	`cmyk(43%, 0%, 9%, 79%)`
CIE LAB	`lab(20.64, -10.46, 0.29)`
CIE LCH	`lch(20.64, 10.47, 178.44)`
CIE XYZ	`xyz(2.438, 3.151, 3.385)`
Decimal	`2045489`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1F3631, 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 #1F3631	Ratio	AA	AAA	AA large
Sample text	1.63:1	Fail	Fail	Fail
Sample text	12.88:1	Pass	Pass	Pass

#1F3631 as text on	Ratio	AA	AAA	AA large
Sample text	12.88:1	Pass	Pass	Pass
Sample text	1.63:1	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 #1F3631 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1f3631; }
.text { color: #1f3631; }
.border { border: 2px solid #1f3631; }
.transparent { background-color: rgb(31 54 49 / 50%); }
.gradient { background: linear-gradient(to right, #1f3631, #1f2f36); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Gray.

Questions

What color is #1F3631?: #1F3631 is a very dark, desaturated spring green, closest to the named color Swamp Thing. It belongs to the gray family of colors.
What is the RGB value of #1F3631?: The RGB value is 31, 54, 49: 31 red, 54 green and 49 blue on a 0 to 255 scale.
What is the complementary color of #1F3631?: The complementary color is #361F24, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1F3631?: White text. Black text has a contrast ratio of 1.63:1 and white text 12.88:1. WCAG asks for at least 4.5:1 for normal text.