What color is #15313B?

#15313B is a very dark, desaturated azure, closest to the named color Into the Night. It belongs to the black family of colors.

What is the RGB value of #15313B?

The RGB value is 21, 49, 59: 21 red, 49 green and 59 blue on a 0 to 255 scale.

What is the complementary color of #15313B?

The complementary color is #3B1F15, found by rotating the hue 180° on the color wheel.

Is black or white text better on #15313B?

White text. Black text has a contrast ratio of 1.53:1 and white text 13.69:1. WCAG asks for at least 4.5:1 for normal text.

#15313B color

#15313B rgb(21, 49, 59)

Shades of black

The hex color #15313B is a very dark, desaturated azure.

In the RGB color model it is made of 8.2% red, 19.2% green and 23.1% blue (21, 49, 59).

Its hue angle is 196°, with 48% saturation and 16% lightness. For print, the CMYK equivalent is 64% cyan, 17% magenta, 0% yellow and 77% black.

The closest named color is Into the Night (#1E3642), a difference of 2.6 ΔE, a small difference.

White text is the more readable choice on this background (contrast 13.69:1).

#15313B color codes

HEX	`#15313B`
RGB	`rgb(21, 49, 59)`
RGB percent	`rgb(8.2%, 19.2%, 23.1%)`
HSL	`hsl(196, 48%, 16%)`
HSV / HSB	`hsv(196, 64%, 23%)`
CMYK	`cmyk(64%, 17%, 0%, 77%)`
CIE LAB	`lab(18.68, -7.05, -9.55)`
CIE LCH	`lch(18.68, 11.87, 233.56)`
CIE XYZ	`xyz(2.197, 2.672, 4.537)`
Decimal	`1388859`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #15313B, 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 #15313B	Ratio	AA	AAA	AA large
Sample text	1.53:1	Fail	Fail	Fail
Sample text	13.69:1	Pass	Pass	Pass

#15313B as text on	Ratio	AA	AAA	AA large
Sample text	13.69:1	Pass	Pass	Pass
Sample text	1.53:1	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 #15313B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #15313b; }
.text { color: #15313b; }
.border { border: 2px solid #15313b; }
.transparent { background-color: rgb(21 49 59 / 50%); }
.gradient { background: linear-gradient(to right, #15313b, #151e3b); }

Background

Text color

Border

Similar colors

Closest common color name: Gunmetal.

Questions

What color is #15313B?: #15313B is a very dark, desaturated azure, closest to the named color Into the Night. It belongs to the black family of colors.
What is the RGB value of #15313B?: The RGB value is 21, 49, 59: 21 red, 49 green and 59 blue on a 0 to 255 scale.
What is the complementary color of #15313B?: The complementary color is #3B1F15, found by rotating the hue 180° on the color wheel.
Is black or white text better on #15313B?: White text. Black text has a contrast ratio of 1.53:1 and white text 13.69:1. WCAG asks for at least 4.5:1 for normal text.