What color is #1B231F?

#1B231F is a very dark, grayish spring green, closest to the named color Underworld. It belongs to the black family of colors.

What is the RGB value of #1B231F?

The RGB value is 27, 35, 31: 27 red, 35 green and 31 blue on a 0 to 255 scale.

What is the complementary color of #1B231F?

The complementary color is #231B1F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1B231F?

White text. Black text has a contrast ratio of 1.31:1 and white text 16.07:1. WCAG asks for at least 4.5:1 for normal text.

#1B231F color

#1B231F rgb(27, 35, 31)

Shades of black

The hex color #1B231F is a very dark, grayish spring green.

In the RGB color model it is made of 10.6% red, 13.7% green and 12.2% blue (27, 35, 31).

Its hue angle is 150°, with 13% saturation and 12% lightness. For print, the CMYK equivalent is 23% cyan, 0% magenta, 11% yellow and 86% black.

The closest named color is Underworld (#1E231C), a difference of 2.3 ΔE, a small difference.

White text is the more readable choice on this background (contrast 16.07:1).

#1B231F color codes

HEX	`#1B231F`
RGB	`rgb(27, 35, 31)`
RGB percent	`rgb(10.6%, 13.7%, 12.2%)`
HSL	`hsl(150, 13%, 12%)`
HSV / HSB	`hsv(150, 23%, 14%)`
CMYK	`cmyk(23%, 0%, 11%, 86%)`
CIE LAB	`lab(12.82, -4.65, 1.5)`
CIE LCH	`lch(12.82, 4.89, 162.14)`
CIE XYZ	`xyz(1.3, 1.534, 1.524)`
Decimal	`1778463`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1B231F, 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 #1B231F	Ratio	AA	AAA	AA large
Sample text	1.31:1	Fail	Fail	Fail
Sample text	16.07:1	Pass	Pass	Pass

#1B231F as text on	Ratio	AA	AAA	AA large
Sample text	16.07:1	Pass	Pass	Pass
Sample text	1.31:1	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 #1B231F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1b231f; }
.text { color: #1b231f; }
.border { border: 2px solid #1b231f; }
.transparent { background-color: rgb(27 35 31 / 50%); }
.gradient { background: linear-gradient(to right, #1b231f, #1b2323); }

Background

Text color

Border

Similar colors

Closest common color name: Onyx.

Questions

What color is #1B231F?: #1B231F is a very dark, grayish spring green, closest to the named color Underworld. It belongs to the black family of colors.
What is the RGB value of #1B231F?: The RGB value is 27, 35, 31: 27 red, 35 green and 31 blue on a 0 to 255 scale.
What is the complementary color of #1B231F?: The complementary color is #231B1F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1B231F?: White text. Black text has a contrast ratio of 1.31:1 and white text 16.07:1. WCAG asks for at least 4.5:1 for normal text.