#181821

Color #181821

A muted very dark blue.

Closest named color Black #000000 · ΔE 10.95 Nearest Tailwind class zinc-900 #18181b · ΔE 4

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Conversions

HEX

#181821

RGB

rgb(24, 24, 33)

HSL

hsl(240, 15.8%, 11.2%)

HSV / HSB

hsv(240, 27.3%, 12.9%)

CMYK

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

LAB

lab(8.63, 2.58, -6.23)

LCH

lch(8.63, 6.74, 292.5)

OKLCH

oklch(21.3%, 0.0176, 284.83)

HWB

hwb(240, 9.4%, 87.1%)

Harmony colors

Complementary

#212118

Analogous

#181d21

#181821

#1d1821

Triadic

#181821

#211818

#182118

Split-complementary

#181821

#211d18

#1d2118

Tetradic

#181821

#211821

#212118

#182118

Square

#181821

#21181d

#212118

#18211d

Shades

Color #181821 mixed toward black.

#14141c

#101016

#0c0c11

#08080b

#040406

Tints

Color #181821 mixed toward white.

#38384d

#585878

#7c7ca0

#a8a8bf

#d3d3df

Tones

Color #181821 mixed toward gray.

#191920

#1a1a20

#1a1a1f

#1b1b1e

#1c1c1d

Accessibility

Aa White text on this color

17.63:1

Aa Black text on this color

1.19:1

White text reads better on this background (17.63:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#18181f · ΔE 1.3

Deuteranopia

#18181f · ΔE 1.3

Tritanopia

#181d1d · ΔE 8.1

Achromatopsia

#191919 · ΔE 6.3

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

Code

CSS

background-color: #181821;

Tailwind (arbitrary value)

bg-[#181821]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#181821 (#181821) is rgb(24, 24, 33) in RGB.

No, #181821 is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #181821, or check how it holds up for accessibility.

Generate a palette → Check contrast