What color is #1B2737?

#1B2737 is a very dark, desaturated azure, closest to the named color Dark. It belongs to the black family of colors.

What is the RGB value of #1B2737?

The RGB value is 27, 39, 55: 27 red, 39 green and 55 blue on a 0 to 255 scale.

What is the complementary color of #1B2737?

The complementary color is #372B1B, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1B2737?

White text. Black text has a contrast ratio of 1.39:1 and white text 15.09:1. WCAG asks for at least 4.5:1 for normal text.

#1B2737 color

#1B2737 rgb(27, 39, 55)

Shades of black

The hex color #1B2737 is a very dark, desaturated azure.

In the RGB color model it is made of 10.6% red, 15.3% green and 21.6% blue (27, 39, 55).

Its hue angle is 214°, with 34% saturation and 16% lightness. For print, the CMYK equivalent is 51% cyan, 29% magenta, 0% yellow and 78% black.

The closest named color is Dark (#1B2431), a difference of 1.7 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 15.09:1).

#1B2737 color codes

HEX	`#1B2737`
RGB	`rgb(27, 39, 55)`
RGB percent	`rgb(10.6%, 15.3%, 21.6%)`
HSL	`hsl(214, 34%, 16%)`
HSV / HSB	`hsv(214, 51%, 22%)`
CMYK	`cmyk(51%, 29%, 0%, 78%)`
CIE LAB	`lab(15.27, 0.1, -11.97)`
CIE LCH	`lch(15.27, 11.97, 270.48)`
CIE XYZ	`xyz(1.867, 1.96, 3.894)`
Decimal	`1779511`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1B2737, 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 #1B2737	Ratio	AA	AAA	AA large
Sample text	1.39:1	Fail	Fail	Fail
Sample text	15.09:1	Pass	Pass	Pass

#1B2737 as text on	Ratio	AA	AAA	AA large
Sample text	15.09:1	Pass	Pass	Pass
Sample text	1.39:1	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 #1B2737 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1b2737; }
.text { color: #1b2737; }
.border { border: 2px solid #1b2737; }
.transparent { background-color: rgb(27 39 55 / 50%); }
.gradient { background: linear-gradient(to right, #1b2737, #1d1b37); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #1B2737?: #1B2737 is a very dark, desaturated azure, closest to the named color Dark. It belongs to the black family of colors.
What is the RGB value of #1B2737?: The RGB value is 27, 39, 55: 27 red, 39 green and 55 blue on a 0 to 255 scale.
What is the complementary color of #1B2737?: The complementary color is #372B1B, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1B2737?: White text. Black text has a contrast ratio of 1.39:1 and white text 15.09:1. WCAG asks for at least 4.5:1 for normal text.