What color is #183F3F?

#183F3F is a very dark, desaturated cyan, closest to the named color Botanical Night. It belongs to the teal family of colors.

What is the RGB value of #183F3F?

The RGB value is 24, 63, 63: 24 red, 63 green and 63 blue on a 0 to 255 scale.

What is the complementary color of #183F3F?

The complementary color is #3F1818, found by rotating the hue 180° on the color wheel.

Is black or white text better on #183F3F?

White text. Black text has a contrast ratio of 1.82:1 and white text 11.53:1. WCAG asks for at least 4.5:1 for normal text.

#183F3F color

#183F3F rgb(24, 63, 63)

Shades of teal

The hex color #183F3F is a very dark, desaturated cyan.

In the RGB color model it is made of 9.4% red, 24.7% green and 24.7% blue (24, 63, 63).

Its hue angle is 180°, with 45% saturation and 17% lightness. For print, the CMYK equivalent is 62% cyan, 0% magenta, 0% yellow and 75% black.

The closest named color is Botanical Night (#12403C), a difference of 2.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 11.53:1).

#183F3F color codes

HEX	`#183F3F`
RGB	`rgb(24, 63, 63)`
RGB percent	`rgb(9.4%, 24.7%, 24.7%)`
HSL	`hsl(180, 45%, 17%)`
HSV / HSB	`hsv(180, 62%, 25%)`
CMYK	`cmyk(62%, 0%, 0%, 75%)`
CIE LAB	`lab(24.02, -13.61, -4.17)`
CIE LCH	`lch(24.02, 14.24, 197.03)`
CIE XYZ	`xyz(3.051, 4.108, 5.334)`
Decimal	`1589055`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #183F3F, 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 #183F3F	Ratio	AA	AAA	AA large
Sample text	1.82:1	Fail	Fail	Fail
Sample text	11.53:1	Pass	Pass	Pass

#183F3F as text on	Ratio	AA	AAA	AA large
Sample text	11.53:1	Pass	Pass	Pass
Sample text	1.82:1	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 #183F3F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #183f3f; }
.text { color: #183f3f; }
.border { border: 2px solid #183f3f; }
.transparent { background-color: rgb(24 63 63 / 50%); }
.gradient { background: linear-gradient(to right, #183f3f, #182c3f); }

Background

Text color

Border

Similar colors

Questions

What color is #183F3F?: #183F3F is a very dark, desaturated cyan, closest to the named color Botanical Night. It belongs to the teal family of colors.
What is the RGB value of #183F3F?: The RGB value is 24, 63, 63: 24 red, 63 green and 63 blue on a 0 to 255 scale.
What is the complementary color of #183F3F?: The complementary color is #3F1818, found by rotating the hue 180° on the color wheel.
Is black or white text better on #183F3F?: White text. Black text has a contrast ratio of 1.82:1 and white text 11.53:1. WCAG asks for at least 4.5:1 for normal text.