What color is #171B30?

#171B30 is a very dark, desaturated blue, closest to the named color Dark Knight. It belongs to the black family of colors.

What is the RGB value of #171B30?

The RGB value is 23, 27, 48: 23 red, 27 green and 48 blue on a 0 to 255 scale.

What is the complementary color of #171B30?

The complementary color is #302C17, found by rotating the hue 180° on the color wheel.

Is black or white text better on #171B30?

White text. Black text has a contrast ratio of 1.24:1 and white text 16.99:1. WCAG asks for at least 4.5:1 for normal text.

#171B30 color

#171B30 rgb(23, 27, 48)

Shades of black

The hex color #171B30 is a very dark, desaturated blue.

In the RGB color model it is made of 9% red, 10.6% green and 18.8% blue (23, 27, 48).

Its hue angle is 230°, with 35% saturation and 14% lightness. For print, the CMYK equivalent is 52% cyan, 44% magenta, 0% yellow and 81% black.

The closest named color is Dark Knight (#151931), a difference of 1.6 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 16.99:1).

#171B30 color codes

HEX	`#171B30`
RGB	`rgb(23, 27, 48)`
RGB percent	`rgb(9%, 10.6%, 18.8%)`
HSL	`hsl(230, 35%, 14%)`
HSV / HSB	`hsv(230, 52%, 19%)`
CMYK	`cmyk(52%, 44%, 0%, 81%)`
CIE LAB	`lab(10.4, 5.1, -14.59)`
CIE LCH	`lch(10.4, 15.45, 289.29)`
CIE XYZ	`xyz(1.279, 1.179, 2.956)`
Decimal	`1514288`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #171B30, 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 #171B30	Ratio	AA	AAA	AA large
Sample text	1.24:1	Fail	Fail	Fail
Sample text	16.99:1	Pass	Pass	Pass

#171B30 as text on	Ratio	AA	AAA	AA large
Sample text	16.99:1	Pass	Pass	Pass
Sample text	1.24:1	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 #171B30 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #171b30; }
.text { color: #171b30; }
.border { border: 2px solid #171b30; }
.transparent { background-color: rgb(23 27 48 / 50%); }
.gradient { background: linear-gradient(to right, #171b30, #201730); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #171B30?: #171B30 is a very dark, desaturated blue, closest to the named color Dark Knight. It belongs to the black family of colors.
What is the RGB value of #171B30?: The RGB value is 23, 27, 48: 23 red, 27 green and 48 blue on a 0 to 255 scale.
What is the complementary color of #171B30?: The complementary color is #302C17, found by rotating the hue 180° on the color wheel.
Is black or white text better on #171B30?: White text. Black text has a contrast ratio of 1.24:1 and white text 16.99:1. WCAG asks for at least 4.5:1 for normal text.