What color is #213730?

#213730 is a very dark, desaturated spring green, closest to the named color Swamp Thing. It belongs to the gray family of colors.

What is the RGB value of #213730?

The RGB value is 33, 55, 48: 33 red, 55 green and 48 blue on a 0 to 255 scale.

What is the complementary color of #213730?

The complementary color is #372128, found by rotating the hue 180° on the color wheel.

Is black or white text better on #213730?

White text. Black text has a contrast ratio of 1.65:1 and white text 12.7:1. WCAG asks for at least 4.5:1 for normal text.

#213730 color

#213730 rgb(33, 55, 48)

Shades of gray

The hex color #213730 is a very dark, desaturated spring green.

In the RGB color model it is made of 12.9% red, 21.6% green and 18.8% blue (33, 55, 48).

Its hue angle is 161°, with 25% saturation and 17% lightness. For print, the CMYK equivalent is 40% cyan, 0% magenta, 13% yellow and 78% black.

The closest named color is Swamp Thing (#162825), a difference of 5.2 ΔE.

White text is the more readable choice on this background (contrast 12.7:1).

#213730 color codes

HEX	`#213730`
RGB	`rgb(33, 55, 48)`
RGB percent	`rgb(12.9%, 21.6%, 18.8%)`
HSL	`hsl(161, 25%, 17%)`
HSV / HSB	`hsv(161, 40%, 22%)`
CMYK	`cmyk(40%, 0%, 13%, 78%)`
CIE LAB	`lab(21.09, -10.65, 1.63)`
CIE LCH	`lch(21.09, 10.77, 171.28)`
CIE XYZ	`xyz(2.527, 3.269, 3.294)`
Decimal	`2176816`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #213730, 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 #213730	Ratio	AA	AAA	AA large
Sample text	1.65:1	Fail	Fail	Fail
Sample text	12.7:1	Pass	Pass	Pass

#213730 as text on	Ratio	AA	AAA	AA large
Sample text	12.7:1	Pass	Pass	Pass
Sample text	1.65:1	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 #213730 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #213730; }
.text { color: #213730; }
.border { border: 2px solid #213730; }
.transparent { background-color: rgb(33 55 48 / 50%); }
.gradient { background: linear-gradient(to right, #213730, #213337); }

Background

Text color

Border

Similar colors

Closest common color name: Onyx.

Questions

What color is #213730?: #213730 is a very dark, desaturated spring green, closest to the named color Swamp Thing. It belongs to the gray family of colors.
What is the RGB value of #213730?: The RGB value is 33, 55, 48: 33 red, 55 green and 48 blue on a 0 to 255 scale.
What is the complementary color of #213730?: The complementary color is #372128, found by rotating the hue 180° on the color wheel.
Is black or white text better on #213730?: White text. Black text has a contrast ratio of 1.65:1 and white text 12.7:1. WCAG asks for at least 4.5:1 for normal text.