What color is #283740?

#283740 is a dark, grayish azure, closest to the named color Petrol Slumber. It belongs to the gray family of colors.

What is the RGB value of #283740?

The RGB value is 40, 55, 64: 40 red, 55 green and 64 blue on a 0 to 255 scale.

What is the complementary color of #283740?

The complementary color is #403128, found by rotating the hue 180° on the color wheel.

Is black or white text better on #283740?

White text. Black text has a contrast ratio of 1.71:1 and white text 12.28:1. WCAG asks for at least 4.5:1 for normal text.

#283740 color

#283740 rgb(40, 55, 64)

Shades of gray

The hex color #283740 is a dark, grayish azure.

In the RGB color model it is made of 15.7% red, 21.6% green and 25.1% blue (40, 55, 64).

Its hue angle is 203°, with 23% saturation and 20% lightness. For print, the CMYK equivalent is 38% cyan, 14% magenta, 0% yellow and 75% black.

The closest named color is Petrol Slumber (#243640), a difference of 1.1 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 12.28:1).

#283740 color codes

HEX	`#283740`
RGB	`rgb(40, 55, 64)`
RGB percent	`rgb(15.7%, 21.6%, 25.1%)`
HSL	`hsl(203, 23%, 20%)`
HSV / HSB	`hsv(203, 38%, 25%)`
CMYK	`cmyk(38%, 14%, 0%, 75%)`
CIE LAB	`lab(22.14, -3.5, -7.58)`
CIE LCH	`lch(22.14, 8.35, 245.24)`
CIE XYZ	`xyz(3.166, 3.554, 5.369)`
Decimal	`2635584`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #283740, 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 #283740	Ratio	AA	AAA	AA large
Sample text	1.71:1	Fail	Fail	Fail
Sample text	12.28:1	Pass	Pass	Pass

#283740 as text on	Ratio	AA	AAA	AA large
Sample text	12.28:1	Pass	Pass	Pass
Sample text	1.71:1	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 #283740 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #283740; }
.text { color: #283740; }
.border { border: 2px solid #283740; }
.transparent { background-color: rgb(40 55 64 / 50%); }
.gradient { background: linear-gradient(to right, #283740, #282b40); }

Background

Text color

Border

Similar colors

Questions

What color is #283740?: #283740 is a dark, grayish azure, closest to the named color Petrol Slumber. It belongs to the gray family of colors.
What is the RGB value of #283740?: The RGB value is 40, 55, 64: 40 red, 55 green and 64 blue on a 0 to 255 scale.
What is the complementary color of #283740?: The complementary color is #403128, found by rotating the hue 180° on the color wheel.
Is black or white text better on #283740?: White text. Black text has a contrast ratio of 1.71:1 and white text 12.28:1. WCAG asks for at least 4.5:1 for normal text.