What color is #51839B?

#51839B is a desaturated azure, closest to the named color Underwater Moonlight. It belongs to the blue family of colors.

What is the RGB value of #51839B?

The RGB value is 81, 131, 155: 81 red, 131 green and 155 blue on a 0 to 255 scale.

What is the complementary color of #51839B?

The complementary color is #9B6951, found by rotating the hue 180° on the color wheel.

Is black or white text better on #51839B?

Black text. Black text has a contrast ratio of 5.07:1 and white text 4.14:1. WCAG asks for at least 4.5:1 for normal text.

#51839B color

#51839B rgb(81, 131, 155)

Shades of blue

The hex color #51839B is a desaturated azure.

In the RGB color model it is made of 31.8% red, 51.4% green and 60.8% blue (81, 131, 155).

Its hue angle is 199°, with 31% saturation and 46% lightness. For print, the CMYK equivalent is 48% cyan, 15% magenta, 0% yellow and 39% black.

The closest named color is Underwater Moonlight (#4488AA), a difference of 3.4 ΔE, a small difference.

Black text is the more readable choice on this background (contrast 5.07:1).

#51839B color codes

HEX	`#51839B`
RGB	`rgb(81, 131, 155)`
RGB percent	`rgb(31.8%, 51.4%, 60.8%)`
HSL	`hsl(199, 31%, 46%)`
HSV / HSB	`hsv(199, 48%, 61%)`
CMYK	`cmyk(48%, 15%, 0%, 39%)`
CIE LAB	`lab(52.23, -10.05, -18.07)`
CIE LCH	`lch(52.23, 20.68, 240.92)`
CIE XYZ	`xyz(17.424, 20.347, 34.013)`
Decimal	`5342107`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #51839B, 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 #51839B	Ratio	AA	AAA	AA large
Sample text	5.07:1	Pass	Fail	Pass
Sample text	4.14:1	Fail	Fail	Pass

#51839B as text on	Ratio	AA	AAA	AA large
Sample text	4.14:1	Fail	Fail	Pass
Sample text	5.07:1	Pass	Fail	Pass

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 #51839B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #51839b; }
.text { color: #51839b; }
.border { border: 2px solid #51839b; }
.transparent { background-color: rgb(81 131 155 / 50%); }
.gradient { background: linear-gradient(to right, #51839b, #515e9b); }

Background

Text color

Border

Similar colors

Questions

What color is #51839B?: #51839B is a desaturated azure, closest to the named color Underwater Moonlight. It belongs to the blue family of colors.
What is the RGB value of #51839B?: The RGB value is 81, 131, 155: 81 red, 131 green and 155 blue on a 0 to 255 scale.
What is the complementary color of #51839B?: The complementary color is #9B6951, found by rotating the hue 180° on the color wheel.
Is black or white text better on #51839B?: Black text. Black text has a contrast ratio of 5.07:1 and white text 4.14:1. WCAG asks for at least 4.5:1 for normal text.