#21aeb9

Color #21aeb9

A moderately saturated medium cyan.

Closest named color Light Sea Green #20b2aa · ΔE 11.49 Nearest Tailwind class cyan-500 #00b8db · ΔE 8.2

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

Conversions

HEX

#21aeb9

RGB

rgb(33, 174, 185)

HSL

hsl(184.3, 69.7%, 42.7%)

HSV / HSB

hsv(184.3, 82.2%, 72.5%)

CMYK

cmyk(82.2%, 5.9%, 0%, 27.5%)

LAB

lab(65.04, -31.02, -15.78)

LCH

lch(65.04, 34.8, 206.96)

OKLCH

oklch(68.7%, 0.111, 203.29)

HWB

hwb(184.3, 12.9%, 27.5%)

Harmony colors

Complementary

#b92c21

Analogous

#21b978

#21aeb9

#2162b9

Triadic

#21aeb9

#b921ae

#aeb921

Split-complementary

#21aeb9

#b92162

#b97821

Tetradic

#21aeb9

#2c21b9

#b92c21

#aeb921

Square

#21aeb9

#7821b9

#b92c21

#62b921

Shades

Color #21aeb9 mixed toward black.

#1b919a

#16747b

#10575c

#0b3a3e

#051d1f

Tints

Color #21aeb9 mixed toward white.

#30ceda

#5ad8e1

#83e2e9

#acebf0

#d6f5f8

Tones

Color #21aeb9 mixed toward gray.

#2ea3ac

#3a989f

#478d93

#548386

#60787a

Accessibility

Aa White text on this color

2.69:1

Aa Black text on this color

7.82:1

Black text reads better on this background (7.82:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#797ab6 · ΔE 30.4

Deuteranopia

#7268b6 · ΔE 35

Tritanopia

#35b4b4 · ΔE 4.3

Achromatopsia

#9e9e9e · ΔE 22.4

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

Code

CSS

background-color: #21aeb9;

Tailwind (arbitrary value)

bg-[#21aeb9]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#21aeb9 (#21aeb9) is rgb(33, 174, 185) in RGB.

No, #21aeb9 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 #21aeb9, or check how it holds up for accessibility.

Generate a palette → Check contrast