#155e66

Color #155e66

A moderately saturated dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 10.99 Nearest Tailwind class teal-800 #005f5a · ΔE 6.7

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

Conversions

HEX

#155e66

RGB

rgb(21, 94, 102)

HSL

hsl(185.9, 65.9%, 24.1%)

HSV / HSB

hsv(185.9, 79.4%, 40%)

CMYK

cmyk(79.4%, 7.8%, 0%, 60%)

LAB

lab(36.22, -18.45, -10.85)

LCH

lch(36.22, 21.4, 210.46)

OKLCH

oklch(44.3%, 0.0688, 206.04)

HWB

hwb(185.9, 8.2%, 60%)

Harmony colors

Complementary

#661d15

Analogous

#156645

#155e66

#153566

Triadic

#155e66

#66155e

#5e6615

Split-complementary

#155e66

#661535

#664515

Tetradic

#155e66

#1d1566

#661d15

#5e6615

Square

#155e66

#451566

#661d15

#356615

Shades

Color #155e66 mixed toward black.

#114e55

#0e3f44

#0a2f33

#071f22

#031011

Tints

Color #155e66 mixed toward white.

#208f9b

#2bc1d1

#5ed1de

#94e1e9

#c9f0f4

Tones

Color #155e66 mixed toward gray.

#1c595f

#225358

#294e52

#30484b

#374344

Accessibility

Aa White text on this color

7.43:1

Aa Black text on this color

2.82:1

White text reads better on this background (7.43:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#414164 · ΔE 25

Deuteranopia

#3d3764 · ΔE 26.7

Tritanopia

#1e6362 · ΔE 4.6

Achromatopsia

#555555 · ΔE 17.7

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

Code

CSS

background-color: #155e66;

Tailwind (arbitrary value)

bg-[#155e66]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#155e66 (#155e66) is rgb(21, 94, 102) in RGB.

No, #155e66 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.

Try it → Accessibility

Contrast Checker

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

Try it → Generators

Palette Generator

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

Try it →

Build something with this color

Generate a full palette from #155e66, or check how it holds up for accessibility.

Generate a palette → Check contrast