#21565b

Color #21565b

A moderately saturated dark cyan.

Closest named color Dark Slate Gray #2f4f4f · ΔE 6.34 Nearest Tailwind class teal-900 #0b4f4a · ΔE 6.4

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Conversions

HEX

#21565b

RGB

rgb(33, 86, 91)

HSL

hsl(185.2, 46.8%, 24.3%)

HSV / HSB

hsv(185.2, 63.7%, 35.7%)

CMYK

cmyk(63.7%, 5.5%, 0%, 64.3%)

LAB

lab(33.42, -15.7, -8.16)

LCH

lch(33.42, 17.69, 207.46)

OKLCH

oklch(42%, 0.0561, 203.78)

HWB

hwb(185.2, 12.9%, 64.3%)

Harmony colors

Complementary

#5b2621

Analogous

#215b43

#21565b

#21395b

Triadic

#21565b

#5b2156

#565b21

Split-complementary

#21565b

#5b2139

#5b4321

Tetradic

#21565b

#26215b

#5b2621

#565b21

Square

#21565b

#43215b

#5b2621

#395b21

Shades

Color #21565b mixed toward black.

#1b484c

#16393d

#102b2d

#0b1d1e

#050e0f

Tints

Color #21565b mixed toward white.

#32838a

#43afb9

#71c4cc

#a1d8dd

#d0ebee

Tones

Color #21565b mixed toward gray.

#265256

#2b4e51

#2f4a4c

#344648

#394243

Accessibility

Aa White text on this color

8.25:1

Aa Black text on this color

2.55:1

White text reads better on this background (8.25:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#3e3f5a · ΔE 22.8

Deuteranopia

#3b375a · ΔE 25.5

Tritanopia

#265959 · ΔE 2.7

Achromatopsia

#4f4f4f · ΔE 15.9

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

Code

CSS

background-color: #21565b;

Tailwind (arbitrary value)

bg-[#21565b]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#21565b (#21565b) is rgb(33, 86, 91) in RGB.

No, #21565b 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 #21565b, or check how it holds up for accessibility.

Generate a palette → Check contrast