#123939

Color #123939

A moderately saturated very dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 10.03 Nearest Tailwind class teal-950 #022f2e · ΔE 3.4

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#123939

RGB

rgb(18, 57, 57)

HSL

hsl(180, 52%, 14.7%)

HSV / HSB

hsv(180, 68.4%, 22.4%)

CMYK

cmyk(68.4%, 0%, 0%, 77.6%)

LAB

lab(21.39, -13.47, -4.09)

LCH

lch(21.39, 14.08, 196.89)

OKLCH

oklch(31.7%, 0.0433, 195.26)

HWB

hwb(180, 7.1%, 77.6%)

Harmony colors

Complementary

#391212

Analogous

#123925

#123939

#122539

Triadic

#123939

#391239

#393912

Split-complementary

#123939

#391225

#392512

Tetradic

#123939

#121239

#391212

#393912

Square

#123939

#251239

#391212

#253912

Shades

Color #123939 mixed toward black.

#0f2f2f

#0c2626

#091c1c

#061313

#030909

Tints

Color #123939 mixed toward white.

#237070

#35a7a7

#5acbcb

#91dcdc

#c8eeee

Tones

Color #123939 mixed toward gray.

#153636

#183232

#1c2f2f

#1f2c2c

#222929

Accessibility

Aa White text on this color

12.57:1

Aa Black text on this color

1.67:1

White text reads better on this background (12.57:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#282839 · ΔE 20.3

Deuteranopia

#262339 · ΔE 23.3

Tritanopia

#163939 · ΔE 0.8

Achromatopsia

#333333 · ΔE 14

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

Code

CSS

background-color: #123939;

Tailwind (arbitrary value)

bg-[#123939]

Related colors

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Dark Slate Gray #2f4f4f

Light Cyan #e0ffff

Pale Turquoise #afeeee

Frequently asked questions

#123939 (#123939) is rgb(18, 57, 57) in RGB.

No, #123939 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 #123939, or check how it holds up for accessibility.

Generate a palette → Check contrast