What color is #1B173B?

#1B173B is a very dark, desaturated blue, closest to the named color Azulado. It belongs to the black family of colors.

What is the RGB value of #1B173B?

The RGB value is 27, 23, 59: 27 red, 23 green and 59 blue on a 0 to 255 scale.

What is the complementary color of #1B173B?

The complementary color is #373B17, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1B173B?

White text. Black text has a contrast ratio of 1.23:1 and white text 17.04:1. WCAG asks for at least 4.5:1 for normal text.

#1B173B color

#1B173B rgb(27, 23, 59)

Shades of black

The hex color #1B173B is a very dark, desaturated blue.

In the RGB color model it is made of 10.6% red, 9% green and 23.1% blue (27, 23, 59).

Its hue angle is 247°, with 44% saturation and 16% lightness. For print, the CMYK equivalent is 54% cyan, 61% magenta, 0% yellow and 77% black.

The closest named color is Azulado (#211D49), a difference of 3.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 17.04:1).

#1B173B color codes

HEX	`#1B173B`
RGB	`rgb(27, 23, 59)`
RGB percent	`rgb(10.6%, 9%, 23.1%)`
HSL	`hsl(247, 44%, 16%)`
HSV / HSB	`hsv(247, 61%, 23%)`
CMYK	`cmyk(54%, 61%, 0%, 77%)`
CIE LAB	`lab(10.27, 13.49, -22.71)`
CIE LCH	`lch(10.27, 26.41, 300.72)`
CIE XYZ	`xyz(1.548, 1.162, 4.279)`
Decimal	`1775419`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1B173B, 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 #1B173B	Ratio	AA	AAA	AA large
Sample text	1.23:1	Fail	Fail	Fail
Sample text	17.04:1	Pass	Pass	Pass

#1B173B as text on	Ratio	AA	AAA	AA large
Sample text	17.04:1	Pass	Pass	Pass
Sample text	1.23:1	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 #1B173B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1b173b; }
.text { color: #1b173b; }
.border { border: 2px solid #1b173b; }
.transparent { background-color: rgb(27 23 59 / 50%); }
.gradient { background: linear-gradient(to right, #1b173b, #2d173b); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Purple.

Questions

What color is #1B173B?: #1B173B is a very dark, desaturated blue, closest to the named color Azulado. It belongs to the black family of colors.
What is the RGB value of #1B173B?: The RGB value is 27, 23, 59: 27 red, 23 green and 59 blue on a 0 to 255 scale.
What is the complementary color of #1B173B?: The complementary color is #373B17, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1B173B?: White text. Black text has a contrast ratio of 1.23:1 and white text 17.04:1. WCAG asks for at least 4.5:1 for normal text.