What color is #21243B?

#21243B is a very dark, desaturated blue, closest to the named color Midnight Express. It belongs to the blue family of colors.

What is the RGB value of #21243B?

The RGB value is 33, 36, 59: 33 red, 36 green and 59 blue on a 0 to 255 scale.

What is the complementary color of #21243B?

The complementary color is #3B3821, found by rotating the hue 180° on the color wheel.

Is black or white text better on #21243B?

White text. Black text has a contrast ratio of 1.38:1 and white text 15.22:1. WCAG asks for at least 4.5:1 for normal text.

#21243B color

#21243B rgb(33, 36, 59)

Shades of blue

The hex color #21243B is a very dark, desaturated blue.

In the RGB color model it is made of 12.9% red, 14.1% green and 23.1% blue (33, 36, 59).

Its hue angle is 233°, with 28% saturation and 18% lightness. For print, the CMYK equivalent is 44% cyan, 39% magenta, 0% yellow and 77% black.

The closest named color is Midnight Express (#21263A), a difference of 2 ΔE, a small difference.

White text is the more readable choice on this background (contrast 15.22:1).

#21243B color codes

HEX	`#21243B`
RGB	`rgb(33, 36, 59)`
RGB percent	`rgb(12.9%, 14.1%, 23.1%)`
HSL	`hsl(233, 28%, 18%)`
HSV / HSB	`hsv(233, 44%, 23%)`
CMYK	`cmyk(44%, 39%, 0%, 77%)`
CIE LAB	`lab(14.96, 5.68, -15.24)`
CIE LCH	`lch(14.96, 16.26, 290.44)`
CIE XYZ	`xyz(2.047, 1.901, 4.396)`
Decimal	`2171963`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #21243B, 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 #21243B	Ratio	AA	AAA	AA large
Sample text	1.38:1	Fail	Fail	Fail
Sample text	15.22:1	Pass	Pass	Pass

#21243B as text on	Ratio	AA	AAA	AA large
Sample text	15.22:1	Pass	Pass	Pass
Sample text	1.38:1	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 #21243B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #21243b; }
.text { color: #21243b; }
.border { border: 2px solid #21243b; }
.transparent { background-color: rgb(33 36 59 / 50%); }
.gradient { background: linear-gradient(to right, #21243b, #2b213b); }

Background

Text color

Border

Similar colors

Closest common color name: Oxford Blue.

Questions

What color is #21243B?: #21243B is a very dark, desaturated blue, closest to the named color Midnight Express. It belongs to the blue family of colors.
What is the RGB value of #21243B?: The RGB value is 33, 36, 59: 33 red, 36 green and 59 blue on a 0 to 255 scale.
What is the complementary color of #21243B?: The complementary color is #3B3821, found by rotating the hue 180° on the color wheel.
Is black or white text better on #21243B?: White text. Black text has a contrast ratio of 1.38:1 and white text 15.22:1. WCAG asks for at least 4.5:1 for normal text.