What color is #1F313F?

#1F313F is a very dark, desaturated azure, closest to the named color Blue Whale. It belongs to the black family of colors.

What is the RGB value of #1F313F?

The RGB value is 31, 49, 63: 31 red, 49 green and 63 blue on a 0 to 255 scale.

What is the complementary color of #1F313F?

The complementary color is #3F2D1F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1F313F?

White text. Black text has a contrast ratio of 1.57:1 and white text 13.38:1. WCAG asks for at least 4.5:1 for normal text.

#1F313F color

#1F313F rgb(31, 49, 63)

Shades of black

The hex color #1F313F is a very dark, desaturated azure.

In the RGB color model it is made of 12.2% red, 19.2% green and 24.7% blue (31, 49, 63).

Its hue angle is 206°, with 34% saturation and 18% lightness. For print, the CMYK equivalent is 51% cyan, 22% magenta, 0% yellow and 75% black.

The closest named color is Blue Whale (#1E3442), a difference of 1.6 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 13.38:1).

#1F313F color codes

HEX	`#1F313F`
RGB	`rgb(31, 49, 63)`
RGB percent	`rgb(12.2%, 19.2%, 24.7%)`
HSL	`hsl(206, 34%, 18%)`
HSV / HSB	`hsv(206, 51%, 25%)`
CMYK	`cmyk(51%, 22%, 0%, 75%)`
CIE LAB	`lab(19.42, -2.78, -11.1)`
CIE LCH	`lch(19.42, 11.45, 255.92)`
CIE XYZ	`xyz(2.56, 2.847, 5.116)`
Decimal	`2044223`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1F313F, 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 #1F313F	Ratio	AA	AAA	AA large
Sample text	1.57:1	Fail	Fail	Fail
Sample text	13.38:1	Pass	Pass	Pass

#1F313F as text on	Ratio	AA	AAA	AA large
Sample text	13.38:1	Pass	Pass	Pass
Sample text	1.57:1	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 #1F313F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1f313f; }
.text { color: #1f313f; }
.border { border: 2px solid #1f313f; }
.transparent { background-color: rgb(31 49 63 / 50%); }
.gradient { background: linear-gradient(to right, #1f313f, #1f213f); }

Background

Text color

Border

Similar colors

Questions

What color is #1F313F?: #1F313F is a very dark, desaturated azure, closest to the named color Blue Whale. It belongs to the black family of colors.
What is the RGB value of #1F313F?: The RGB value is 31, 49, 63: 31 red, 49 green and 63 blue on a 0 to 255 scale.
What is the complementary color of #1F313F?: The complementary color is #3F2D1F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1F313F?: White text. Black text has a contrast ratio of 1.57:1 and white text 13.38:1. WCAG asks for at least 4.5:1 for normal text.