What color is #1B1357?

#1B1357 is a dark, moderate blue, closest to the named color Space Colonisation. It belongs to the black family of colors.

What is the RGB value of #1B1357?

The RGB value is 27, 19, 87: 27 red, 19 green and 87 blue on a 0 to 255 scale.

What is the complementary color of #1B1357?

The complementary color is #4F5713, found by rotating the hue 180° on the color wheel.

Is black or white text better on #1B1357?

White text. Black text has a contrast ratio of 1.28:1 and white text 16.44:1. WCAG asks for at least 4.5:1 for normal text.

#1B1357 color

#1B1357 rgb(27, 19, 87)

Shades of black

The hex color #1B1357 is a dark, moderate blue.

In the RGB color model it is made of 10.6% red, 7.5% green and 34.1% blue (27, 19, 87).

Its hue angle is 247°, with 64% saturation and 21% lightness. For print, the CMYK equivalent is 69% cyan, 78% magenta, 0% yellow and 66% black.

The closest named color is Space Colonisation (#150F5B), a difference of 1.7 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 16.44:1).

#1B1357 color codes

HEX	`#1B1357`
RGB	`rgb(27, 19, 87)`
RGB percent	`rgb(10.6%, 7.5%, 34.1%)`
HSL	`hsl(247, 64%, 21%)`
HSV / HSB	`hsv(247, 78%, 34%)`
CMYK	`cmyk(69%, 78%, 0%, 66%)`
CIE LAB	`lab(11.87, 26.66, -39.57)`
CIE LCH	`lch(11.87, 47.71, 303.97)`
CIE XYZ	`xyz(2.405, 1.387, 9.156)`
Decimal	`1774423`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #1B1357, 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 #1B1357	Ratio	AA	AAA	AA large
Sample text	1.28:1	Fail	Fail	Fail
Sample text	16.44:1	Pass	Pass	Pass

#1B1357 as text on	Ratio	AA	AAA	AA large
Sample text	16.44:1	Pass	Pass	Pass
Sample text	1.28:1	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 #1B1357 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #1b1357; }
.text { color: #1b1357; }
.border { border: 2px solid #1b1357; }
.transparent { background-color: rgb(27 19 87 / 50%); }
.gradient { background: linear-gradient(to right, #1b1357, #3d1357); }

Background

Text color

Border

Similar colors

Closest common color name: Midnight Blue.

Questions

What color is #1B1357?: #1B1357 is a dark, moderate blue, closest to the named color Space Colonisation. It belongs to the black family of colors.
What is the RGB value of #1B1357?: The RGB value is 27, 19, 87: 27 red, 19 green and 87 blue on a 0 to 255 scale.
What is the complementary color of #1B1357?: The complementary color is #4F5713, found by rotating the hue 180° on the color wheel.
Is black or white text better on #1B1357?: White text. Black text has a contrast ratio of 1.28:1 and white text 16.44:1. WCAG asks for at least 4.5:1 for normal text.