What color is #333F51?

#333F51 is a dark, grayish azure, closest to the named color Dark & Stormy. It belongs to the gray family of colors.

What is the RGB value of #333F51?

The RGB value is 51, 63, 81: 51 red, 63 green and 81 blue on a 0 to 255 scale.

What is the complementary color of #333F51?

The complementary color is #514533, found by rotating the hue 180° on the color wheel.

Is black or white text better on #333F51?

White text. Black text has a contrast ratio of 1.97:1 and white text 10.66:1. WCAG asks for at least 4.5:1 for normal text.

#333F51 color

#333F51 rgb(51, 63, 81)

Shades of gray

The hex color #333F51 is a dark, grayish azure.

In the RGB color model it is made of 20% red, 24.7% green and 31.8% blue (51, 63, 81).

Its hue angle is 216°, with 23% saturation and 26% lightness. For print, the CMYK equivalent is 37% cyan, 22% magenta, 0% yellow and 68% black.

The closest named color is Dark & Stormy (#353F51), a difference of 0.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 10.66:1).

#333F51 color codes

HEX	`#333F51`
RGB	`rgb(51, 63, 81)`
RGB percent	`rgb(20%, 24.7%, 31.8%)`
HSL	`hsl(216, 23%, 26%)`
HSV / HSB	`hsv(216, 37%, 32%)`
CMYK	`cmyk(37%, 22%, 0%, 68%)`
CIE LAB	`lab(26.31, 0.2, -12.45)`
CIE LCH	`lch(26.31, 12.45, 270.92)`
CIE XYZ	`xyz(4.628, 4.853, 8.476)`
Decimal	`3358545`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #333F51, 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 #333F51	Ratio	AA	AAA	AA large
Sample text	1.97:1	Fail	Fail	Fail
Sample text	10.66:1	Pass	Pass	Pass

#333F51 as text on	Ratio	AA	AAA	AA large
Sample text	10.66:1	Pass	Pass	Pass
Sample text	1.97:1	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 #333F51 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #333f51; }
.text { color: #333f51; }
.border { border: 2px solid #333f51; }
.transparent { background-color: rgb(51 63 81 / 50%); }
.gradient { background: linear-gradient(to right, #333f51, #363351); }

Background

Text color

Border

Similar colors

Closest common color name: Charcoal.

Questions

What color is #333F51?: #333F51 is a dark, grayish azure, closest to the named color Dark & Stormy. It belongs to the gray family of colors.
What is the RGB value of #333F51?: The RGB value is 51, 63, 81: 51 red, 63 green and 81 blue on a 0 to 255 scale.
What is the complementary color of #333F51?: The complementary color is #514533, found by rotating the hue 180° on the color wheel.
Is black or white text better on #333F51?: White text. Black text has a contrast ratio of 1.97:1 and white text 10.66:1. WCAG asks for at least 4.5:1 for normal text.