#182121

Color #182121

A muted very dark cyan.

Closest named color Black #000000 · ΔE 12.62 Nearest Tailwind class mist-800 #22292b · ΔE 3.4

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Conversions

HEX

#182121

RGB

rgb(24, 33, 33)

HSL

hsl(180, 15.8%, 11.2%)

HSV / HSB

hsv(180, 27.3%, 12.9%)

CMYK

cmyk(27.3%, 0%, 0%, 87.1%)

LAB

lab(11.9, -4, -1.33)

LCH

lch(11.9, 4.22, 198.39)

OKLCH

oklch(23.9%, 0.0129, 196.19)

HWB

hwb(180, 9.4%, 87.1%)

Harmony colors

Complementary

#211818

Analogous

#18211d

#182121

#181d21

Triadic

#182121

#211821

#212118

Split-complementary

#182121

#21181d

#211d18

Tetradic

#182121

#181821

#211818

#212118

Square

#182121

#1d1821

#211818

#1d2118

Shades

Color #182121 mixed toward black.

#141c1c

#101616

#0c1111

#080b0b

#040606

Tints

Color #182121 mixed toward white.

#384d4d

#587878

#7ca0a0

#a8bfbf

#d3dfdf

Tones

Color #182121 mixed toward gray.

#192020

#1a2020

#1a1f1f

#1b1e1e

#1c1d1d

Accessibility

Aa White text on this color

16.43:1

Aa Black text on this color

1.28:1

White text reads better on this background (16.43:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1c1c21 · ΔE 7.5

Deuteranopia

#1c1b21 · ΔE 8.6

Tritanopia

#192121 · ΔE 0.5

Achromatopsia

#1f1f1f · ΔE 5.4

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #182121;

Tailwind (arbitrary value)

bg-[#182121]

Related colors

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Dark Slate Gray #2f4f4f

Light Cyan #e0ffff

Pale Turquoise #afeeee

Frequently asked questions

#182121 (#182121) is rgb(24, 33, 33) in RGB.

No, #182121 is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #182121, or check how it holds up for accessibility.

Generate a palette → Check contrast