What color is #1F3139?

#1F3139 is a very dark, desaturated azure, closest to the named color Petrol Slumber. It belongs to the black family of colors.

What is the RGB value of #1F3139?

The RGB value is 31, 49, 57: 31 red, 49 green and 57 blue on a 0 to 255 scale.

What is the complementary color of #1F3139?

The complementary color is #39271F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1F3139?

White text. Black text has a contrast ratio of 1.56:1 and white text 13.49:1. WCAG asks for at least 4.5:1 for normal text.

#1F3139 color

#1F3139 rgb(31, 49, 57)

Shades of black

The hex color #1F3139 is a very dark, desaturated azure.

In the RGB color model it is made of 12.2% red, 19.2% green and 22.4% blue (31, 49, 57).

Its hue angle is 198°, with 30% saturation and 17% lightness. For print, the CMYK equivalent is 46% cyan, 14% magenta, 0% yellow and 78% black.

The closest named color is Petrol Slumber (#243640), a difference of 2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 13.49:1).

#1F3139 color codes

HEX	`#1F3139`
RGB	`rgb(31, 49, 57)`
RGB percent	`rgb(12.2%, 19.2%, 22.4%)`
HSL	`hsl(198, 30%, 17%)`
HSV / HSB	`hsv(198, 46%, 22%)`
CMYK	`cmyk(46%, 14%, 0%, 78%)`
CIE LAB	`lab(19.15, -4.8, -7.4)`
CIE LCH	`lch(19.15, 8.82, 237)`
CIE XYZ	`xyz(2.402, 2.783, 4.281)`
Decimal	`2044217`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1F3139, 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 #1F3139	Ratio	AA	AAA	AA large
Sample text	1.56:1	Fail	Fail	Fail
Sample text	13.49:1	Pass	Pass	Pass

#1F3139 as text on	Ratio	AA	AAA	AA large
Sample text	13.49:1	Pass	Pass	Pass
Sample text	1.56:1	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 #1F3139 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1f3139; }
.text { color: #1f3139; }
.border { border: 2px solid #1f3139; }
.transparent { background-color: rgb(31 49 57 / 50%); }
.gradient { background: linear-gradient(to right, #1f3139, #1f2439); }

Background

Text color

Border

Similar colors

Questions

What color is #1F3139?: #1F3139 is a very dark, desaturated azure, closest to the named color Petrol Slumber. It belongs to the black family of colors.
What is the RGB value of #1F3139?: The RGB value is 31, 49, 57: 31 red, 49 green and 57 blue on a 0 to 255 scale.
What is the complementary color of #1F3139?: The complementary color is #39271F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1F3139?: White text. Black text has a contrast ratio of 1.56:1 and white text 13.49:1. WCAG asks for at least 4.5:1 for normal text.