#155c78

Color #155c78

A vivid, highly saturated dark cyan.

Closest named color Charcoal #36454f · ΔE 17.67 Nearest Tailwind class cyan-800 #005f78 · ΔE 2.6

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Conversions

HEX

#155c78

RGB

rgb(21, 92, 120)

HSL

hsl(197, 70.2%, 27.6%)

HSV / HSB

hsv(197, 82.5%, 47.1%)

CMYK

cmyk(82.5%, 23.3%, 0%, 52.9%)

LAB

lab(36.31, -10.76, -21.85)

LCH

lch(36.31, 24.36, 243.78)

OKLCH

oklch(44.6%, 0.0805, 229.84)

HWB

hwb(197, 8.2%, 52.9%)

Harmony colors

Complementary

#783115

Analogous

#157862

#155c78

#152a78

Triadic

#155c78

#78155c

#5c7815

Split-complementary

#155c78

#78152a

#786215

Tetradic

#155c78

#311578

#783115

#5c7815

Square

#155c78

#621578

#783115

#2a7815

Shades

Color #155c78 mixed toward black.

#114c64

#0e3d50

#0a2e3c

#071f28

#030f14

Tints

Color #155c78 mixed toward white.

#1e84ac

#2ea9da

#62bfe3

#96d4ed

#cbeaf6

Tones

Color #155c78 mixed toward gray.

#1d5870

#255567

#2e515f

#364e57

#3e4a4f

Accessibility

Aa White text on this color

7.41:1

Aa Black text on this color

2.83:1

White text reads better on this background (7.41:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#404072 · ΔE 18.8

Deuteranopia

#3c3671 · ΔE 20.2

Tritanopia

#1d6d6c · ΔE 14.6

Achromatopsia

#555555 · ΔE 16.8

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

Code

CSS

background-color: #155c78;

Tailwind (arbitrary value)

bg-[#155c78]

Related colors

Sky Blue #87ceeb

Deep Sky Blue #00bfff

Light Blue #add8e6

Light Sky Blue #87cefa

Charcoal #36454f

Powder Blue #b0e0e6

Frequently asked questions

#155c78 (#155c78) is rgb(21, 92, 120) in RGB.

No, #155c78 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 #155c78, or check how it holds up for accessibility.

Generate a palette → Check contrast