#121d21

Color #121d21

A muted very dark cyan.

Closest named color Black #000000 · ΔE 11.4 Nearest Tailwind class mist-900 #161b1d · ΔE 2.8

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Conversions

HEX

#121d21

RGB

rgb(18, 29, 33)

HSL

hsl(196, 29.4%, 10%)

HSV / HSB

hsv(196, 45.5%, 12.9%)

CMYK

cmyk(45.5%, 12.1%, 0%, 87.1%)

LAB

lab(9.93, -3.57, -4.31)

LCH

lch(9.93, 5.6, 230.36)

OKLCH

oklch(22.2%, 0.0175, 222.45)

HWB

hwb(196, 7.1%, 87.1%)

Harmony colors

Complementary

#211612

Analogous

#12211d

#121d21

#121621

Triadic

#121d21

#21121d

#1d2112

Split-complementary

#121d21

#211216

#211d12

Tetradic

#121d21

#161221

#211612

#1d2112

Square

#121d21

#1d1221

#211612

#162112

Shades

Color #121d21 mixed toward black.

#0f181b

#0c1316

#090e10

#060a0b

#030505

Tints

Color #121d21 mixed toward white.

#2d4852

#487484

#6b9cae

#9cbdc9

#cedee4

Tones

Color #121d21 mixed toward gray.

#131c20

#151c1e

#161b1d

#171b1c

#181a1b

Accessibility

Aa White text on this color

17.16:1

Aa Black text on this color

1.22:1

White text reads better on this background (17.16:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#171720 · ΔE 8.6

Deuteranopia

#171620 · ΔE 9.6

Tritanopia

#131f1f · ΔE 3.2

Achromatopsia

#1b1b1b · ΔE 6

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

Code

CSS

background-color: #121d21;

Tailwind (arbitrary value)

bg-[#121d21]

Related colors

Deep Sky Blue #00bfff

Light Blue #add8e6

Sky Blue #87ceeb

Light Sky Blue #87cefa

Charcoal #36454f

Powder Blue #b0e0e6

Frequently asked questions

#121d21 (#121d21) is rgb(18, 29, 33) in RGB.

No, #121d21 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 #121d21, or check how it holds up for accessibility.

Generate a palette → Check contrast