What color is #5151A8?

#5151A8 is a desaturated blue, closest to the named color Galaxy Express. It belongs to the blue family of colors.

What is the RGB value of #5151A8?

The RGB value is 81, 81, 168: 81 red, 81 green and 168 blue on a 0 to 255 scale.

What is the complementary color of #5151A8?

The complementary color is #A8A851, found by rotating the hue 180° on the color wheel.

Is black or white text better on #5151A8?

White text. Black text has a contrast ratio of 3.09:1 and white text 6.79:1. WCAG asks for at least 4.5:1 for normal text.

#5151A8 color

#5151A8 rgb(81, 81, 168)

Shades of blue

The hex color #5151A8 is a desaturated blue.

In the RGB color model it is made of 31.8% red, 31.8% green and 65.9% blue (81, 81, 168).

Its hue angle is 240°, with 35% saturation and 49% lightness. For print, the CMYK equivalent is 52% cyan, 52% magenta, 0% yellow and 34% black.

The closest named color is Galaxy Express (#444499), a difference of 4.5 ΔE, a small difference.

White text is the more readable choice on this background (contrast 6.79:1).

#5151A8 color codes

HEX	`#5151A8`
RGB	`rgb(81, 81, 168)`
RGB percent	`rgb(31.8%, 31.8%, 65.9%)`
HSL	`hsl(240, 35%, 49%)`
HSV / HSB	`hsv(240, 52%, 66%)`
CMYK	`cmyk(52%, 52%, 0%, 34%)`
CIE LAB	`lab(38.66, 24.65, -47.01)`
CIE LCH	`lch(38.66, 53.08, 297.67)`
CIE XYZ	`xyz(13.401, 10.461, 38.351)`
Decimal	`5329320`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #5151A8, 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 #5151A8	Ratio	AA	AAA	AA large
Sample text	3.09:1	Fail	Fail	Pass
Sample text	6.79:1	Pass	Fail	Pass

#5151A8 as text on	Ratio	AA	AAA	AA large
Sample text	6.79:1	Pass	Fail	Pass
Sample text	3.09:1	Fail	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 #5151A8 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #5151a8; }
.text { color: #5151a8; }
.border { border: 2px solid #5151a8; }
.transparent { background-color: rgb(81 81 168 / 50%); }
.gradient { background: linear-gradient(to right, #5151a8, #7d51a8); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Blue.

Questions

What color is #5151A8?: #5151A8 is a desaturated blue, closest to the named color Galaxy Express. It belongs to the blue family of colors.
What is the RGB value of #5151A8?: The RGB value is 81, 81, 168: 81 red, 81 green and 168 blue on a 0 to 255 scale.
What is the complementary color of #5151A8?: The complementary color is #A8A851, found by rotating the hue 180° on the color wheel.
Is black or white text better on #5151A8?: White text. Black text has a contrast ratio of 3.09:1 and white text 6.79:1. WCAG asks for at least 4.5:1 for normal text.