#21555c

Color #21555c

A moderately saturated dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 6.6 Nearest Tailwind class teal-900 #0b4f4a · ΔE 7.3

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

Conversions

HEX

#21555c

RGB

rgb(33, 85, 92)

HSL

hsl(187.1, 47.2%, 24.5%)

HSV / HSB

hsv(187.1, 64.1%, 36.1%)

CMYK

cmyk(64.1%, 7.6%, 0%, 63.9%)

LAB

lab(33.12, -14.8, -9.25)

LCH

lch(33.12, 17.45, 212.01)

OKLCH

oklch(41.8%, 0.0558, 207.3)

HWB

hwb(187.1, 12.9%, 63.9%)

Harmony colors

Complementary

#5c2821

Analogous

#215c45

#21555c

#21375c

Triadic

#21555c

#5c2155

#555c21

Split-complementary

#21555c

#5c2137

#5c4521

Tetradic

#21555c

#28215c

#5c2821

#555c21

Square

#21555c

#45215c

#5c2821

#375c21

Shades

Color #21555c mixed toward black.

#1b474d

#16393d

#102a2e

#0b1c1f

#050e0f

Tints

Color #21555c mixed toward white.

#32818b

#43acba

#71c1cc

#a1d6dd

#d0eaee

Tones

Color #21555c mixed toward gray.

#265157

#2b4d52

#304a4d

#354648

#3a4243

Accessibility

Aa White text on this color

8.34:1

Aa Black text on this color

2.52:1

White text reads better on this background (8.34:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3e3e5a · ΔE 22.7

Deuteranopia

#3b375a · ΔE 24.8

Tritanopia

#265959 · ΔE 3.8

Achromatopsia

#4e4e4e · ΔE 15.5

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

Code

CSS

background-color: #21555c;

Tailwind (arbitrary value)

bg-[#21555c]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#21555c (#21555c) is rgb(33, 85, 92) in RGB.

No, #21555c 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 #21555c, or check how it holds up for accessibility.

Generate a palette → Check contrast