What color is #312F51?

#312F51 is a dark, desaturated blue, closest to the named color Purple Noir. It belongs to the blue family of colors.

What is the RGB value of #312F51?

The RGB value is 49, 47, 81: 49 red, 47 green and 81 blue on a 0 to 255 scale.

What is the complementary color of #312F51?

The complementary color is #4F512F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #312F51?

White text. Black text has a contrast ratio of 1.66:1 and white text 12.68:1. WCAG asks for at least 4.5:1 for normal text.

#312F51 color

#312F51 rgb(49, 47, 81)

Shades of blue

The hex color #312F51 is a dark, desaturated blue.

In the RGB color model it is made of 19.2% red, 18.4% green and 31.8% blue (49, 47, 81).

Its hue angle is 244°, with 27% saturation and 25% lightness. For print, the CMYK equivalent is 40% cyan, 42% magenta, 0% yellow and 68% black.

The closest named color is Purple Noir (#322C56), a difference of 2.7 ΔE, a small difference.

White text is the more readable choice on this background (contrast 12.68:1).

#312F51 color codes

HEX	`#312F51`
RGB	`rgb(49, 47, 81)`
RGB percent	`rgb(19.2%, 18.4%, 31.8%)`
HSL	`hsl(244, 27%, 25%)`
HSV / HSB	`hsv(244, 42%, 32%)`
CMYK	`cmyk(40%, 42%, 0%, 68%)`
CIE LAB	`lab(21.13, 10.44, -20.5)`
CIE LCH	`lch(21.13, 23, 296.98)`
CIE XYZ	`xyz(3.768, 3.28, 8.218)`
Decimal	`3223377`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #312F51, 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 #312F51	Ratio	AA	AAA	AA large
Sample text	1.66:1	Fail	Fail	Fail
Sample text	12.68:1	Pass	Pass	Pass

#312F51 as text on	Ratio	AA	AAA	AA large
Sample text	12.68:1	Pass	Pass	Pass
Sample text	1.66:1	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 #312F51 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #312f51; }
.text { color: #312f51; }
.border { border: 2px solid #312f51; }
.transparent { background-color: rgb(49 47 81 / 50%); }
.gradient { background: linear-gradient(to right, #312f51, #422f51); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #312F51?: #312F51 is a dark, desaturated blue, closest to the named color Purple Noir. It belongs to the blue family of colors.
What is the RGB value of #312F51?: The RGB value is 49, 47, 81: 49 red, 47 green and 81 blue on a 0 to 255 scale.
What is the complementary color of #312F51?: The complementary color is #4F512F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #312F51?: White text. Black text has a contrast ratio of 1.66:1 and white text 12.68:1. WCAG asks for at least 4.5:1 for normal text.