What color is #233740?

#233740 is a very dark, desaturated azure, closest to the named color Petrol Slumber. It belongs to the gray family of colors.

What is the RGB value of #233740?

The RGB value is 35, 55, 64: 35 red, 55 green and 64 blue on a 0 to 255 scale.

What is the complementary color of #233740?

The complementary color is #402C23, found by rotating the hue 180° on the color wheel.

Is black or white text better on #233740?

White text. Black text has a contrast ratio of 1.69:1 and white text 12.41:1. WCAG asks for at least 4.5:1 for normal text.

#233740 color

#233740 rgb(35, 55, 64)

Shades of gray

The hex color #233740 is a very dark, desaturated azure.

In the RGB color model it is made of 13.7% red, 21.6% green and 25.1% blue (35, 55, 64).

Its hue angle is 199°, with 29% saturation and 19% lightness. For print, the CMYK equivalent is 45% cyan, 14% magenta, 0% yellow and 75% black.

The closest named color is Petrol Slumber (#243640), a difference of 1.2 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 12.41:1).

#233740 color codes

HEX	`#233740`
RGB	`rgb(35, 55, 64)`
RGB percent	`rgb(13.7%, 21.6%, 25.1%)`
HSL	`hsl(199, 29%, 19%)`
HSV / HSB	`hsv(199, 45%, 25%)`
CMYK	`cmyk(45%, 14%, 0%, 75%)`
CIE LAB	`lab(21.8, -5.18, -8.13)`
CIE LCH	`lch(21.8, 9.64, 237.49)`
CIE XYZ	`xyz(2.984, 3.46, 5.36)`
Decimal	`2307904`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #233740, 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 #233740	Ratio	AA	AAA	AA large
Sample text	1.69:1	Fail	Fail	Fail
Sample text	12.41:1	Pass	Pass	Pass

#233740 as text on	Ratio	AA	AAA	AA large
Sample text	12.41:1	Pass	Pass	Pass
Sample text	1.69:1	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 #233740 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #233740; }
.text { color: #233740; }
.border { border: 2px solid #233740; }
.transparent { background-color: rgb(35 55 64 / 50%); }
.gradient { background: linear-gradient(to right, #233740, #232840); }

Background

Text color

Border

Similar colors

Questions

What color is #233740?: #233740 is a very dark, desaturated azure, closest to the named color Petrol Slumber. It belongs to the gray family of colors.
What is the RGB value of #233740?: The RGB value is 35, 55, 64: 35 red, 55 green and 64 blue on a 0 to 255 scale.
What is the complementary color of #233740?: The complementary color is #402C23, found by rotating the hue 180° on the color wheel.
Is black or white text better on #233740?: White text. Black text has a contrast ratio of 1.69:1 and white text 12.41:1. WCAG asks for at least 4.5:1 for normal text.