#18deef

Color #18deef

A vivid, highly saturated medium cyan.

Closest named color Dark Turquoise #00ced1 · ΔE 9.66 Nearest Tailwind class cyan-300 #53eafd · ΔE 3.6

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Conversions

HEX

#18deef

RGB

rgb(24, 222, 239)

HSL

hsl(184.7, 87%, 51.6%)

HSV / HSB

hsv(184.7, 90%, 93.7%)

CMYK

cmyk(90%, 7.1%, 0%, 6.3%)

LAB

lab(81.11, -37.51, -20.79)

LCH

lch(81.11, 42.89, 209)

OKLCH

oklch(82.3%, 0.1379, 204.82)

HWB

hwb(184.7, 9.4%, 6.3%)

Harmony colors

Complementary

#ef2918

Analogous

#18ef94

#18deef

#1873ef

Triadic

#18deef

#ef18de

#deef18

Split-complementary

#18deef

#ef1873

#ef9418

Tetradic

#18deef

#2918ef

#ef2918

#deef18

Square

#18deef

#9418ef

#ef2918

#73ef18

Shades

Color #18deef mixed toward black.

#0ebecd

#0b98a4

#09727b

#064c52

#032629

Tints

Color #18deef mixed toward white.

#3fe4f2

#65e9f4

#8ceff7

#b2f4fa

#d9fafc

Tones

Color #18deef mixed toward gray.

#2acfdd

#3cc0cb

#4eb1b9

#60a2a7

#729395

Accessibility

Aa White text on this color

1.65:1

Aa Black text on this color

12.73:1

Black text reads better on this background (12.73:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#9a9beb · ΔE 33.3

Deuteranopia

#9083ea · ΔE 38.2

Tritanopia

#3ce8e7 · ΔE 6.2

Achromatopsia

#c9c9c9 · ΔE 23.8

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

Code

CSS

background-color: #18deef;

Tailwind (arbitrary value)

bg-[#18deef]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#18deef (#18deef) is rgb(24, 222, 239) in RGB.

No, #18deef 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 #18deef, or check how it holds up for accessibility.

Generate a palette → Check contrast