What color is #404B51?

#404B51 is a dark, grayish azure, closest to the named color Lights Out. It belongs to the gray family of colors.

What is the RGB value of #404B51?

The RGB value is 64, 75, 81: 64 red, 75 green and 81 blue on a 0 to 255 scale.

What is the complementary color of #404B51?

The complementary color is #514640, found by rotating the hue 180° on the color wheel.

Is black or white text better on #404B51?

White text. Black text has a contrast ratio of 2.34:1 and white text 8.96:1. WCAG asks for at least 4.5:1 for normal text.

#404B51 color

#404B51 rgb(64, 75, 81)

Shades of gray

The hex color #404B51 is a dark, grayish azure.

In the RGB color model it is made of 25.1% red, 29.4% green and 31.8% blue (64, 75, 81).

Its hue angle is 201°, with 12% saturation and 28% lightness. For print, the CMYK equivalent is 21% cyan, 7% magenta, 0% yellow and 68% black.

The closest named color is Lights Out (#3D474B), a difference of 1.7 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 8.96:1).

#404B51 color codes

HEX	`#404B51`
RGB	`rgb(64, 75, 81)`
RGB percent	`rgb(25.1%, 29.4%, 31.8%)`
HSL	`hsl(201, 12%, 28%)`
HSV / HSB	`hsv(201, 21%, 32%)`
CMYK	`cmyk(21%, 7%, 0%, 68%)`
CIE LAB	`lab(31.15, -2.89, -5.03)`
CIE LCH	`lch(31.15, 5.8, 240.17)`
CIE XYZ	`xyz(6.115, 6.716, 8.757)`
Decimal	`4213585`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #404B51, 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 #404B51	Ratio	AA	AAA	AA large
Sample text	2.34:1	Fail	Fail	Fail
Sample text	8.96:1	Pass	Pass	Pass

#404B51 as text on	Ratio	AA	AAA	AA large
Sample text	8.96:1	Pass	Pass	Pass
Sample text	2.34:1	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 #404B51 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #404b51; }
.text { color: #404b51; }
.border { border: 2px solid #404b51; }
.transparent { background-color: rgb(64 75 81 / 50%); }
.gradient { background: linear-gradient(to right, #404b51, #404351); }

Background

Text color

Border

Similar colors

Closest common color name: Charcoal.

Questions

What color is #404B51?: #404B51 is a dark, grayish azure, closest to the named color Lights Out. It belongs to the gray family of colors.
What is the RGB value of #404B51?: The RGB value is 64, 75, 81: 64 red, 75 green and 81 blue on a 0 to 255 scale.
What is the complementary color of #404B51?: The complementary color is #514640, found by rotating the hue 180° on the color wheel.
Is black or white text better on #404B51?: White text. Black text has a contrast ratio of 2.34:1 and white text 8.96:1. WCAG asks for at least 4.5:1 for normal text.