What color is #313B51?

#313B51 is a dark, grayish blue, closest to the named color Dark & Stormy. It belongs to the blue family of colors.

What is the RGB value of #313B51?

The RGB value is 49, 59, 81: 49 red, 59 green and 81 blue on a 0 to 255 scale.

What is the complementary color of #313B51?

The complementary color is #514731, found by rotating the hue 180° on the color wheel.

Is black or white text better on #313B51?

White text. Black text has a contrast ratio of 1.87:1 and white text 11.2:1. WCAG asks for at least 4.5:1 for normal text.

#313B51 color

#313B51 rgb(49, 59, 81)

Shades of blue

The hex color #313B51 is a dark, grayish blue.

In the RGB color model it is made of 19.2% red, 23.1% green and 31.8% blue (49, 59, 81).

Its hue angle is 221°, with 25% saturation and 25% lightness. For print, the CMYK equivalent is 40% cyan, 27% magenta, 0% yellow and 68% black.

The closest named color is Dark & Stormy (#353F51), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 11.2:1).

#313B51 color codes

HEX	`#313B51`
RGB	`rgb(49, 59, 81)`
RGB percent	`rgb(19.2%, 23.1%, 31.8%)`
HSL	`hsl(221, 25%, 25%)`
HSV / HSB	`hsv(221, 40%, 32%)`
CMYK	`cmyk(40%, 27%, 0%, 68%)`
CIE LAB	`lab(24.87, 2.19, -14.67)`
CIE LCH	`lch(24.87, 14.83, 278.5)`
CIE XYZ	`xyz(4.315, 4.375, 8.4)`
Decimal	`3226449`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #313B51, 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 #313B51	Ratio	AA	AAA	AA large
Sample text	1.87:1	Fail	Fail	Fail
Sample text	11.2:1	Pass	Pass	Pass

#313B51 as text on	Ratio	AA	AAA	AA large
Sample text	11.2:1	Pass	Pass	Pass
Sample text	1.87:1	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 #313B51 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #313b51; }
.text { color: #313b51; }
.border { border: 2px solid #313b51; }
.transparent { background-color: rgb(49 59 81 / 50%); }
.gradient { background: linear-gradient(to right, #313b51, #373151); }

Background

Text color

Border

Similar colors

Closest common color name: Prussian Blue.

Questions

What color is #313B51?: #313B51 is a dark, grayish blue, closest to the named color Dark & Stormy. It belongs to the blue family of colors.
What is the RGB value of #313B51?: The RGB value is 49, 59, 81: 49 red, 59 green and 81 blue on a 0 to 255 scale.
What is the complementary color of #313B51?: The complementary color is #514731, found by rotating the hue 180° on the color wheel.
Is black or white text better on #313B51?: White text. Black text has a contrast ratio of 1.87:1 and white text 11.2:1. WCAG asks for at least 4.5:1 for normal text.