#18ddf0

Color #18ddf0

A vivid, highly saturated medium cyan.

Closest named color Dark Turquoise #00ced1 · ΔE 10.45 Nearest Tailwind class cyan-300 #53eafd · ΔE 3.6

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

Conversions

HEX

#18ddf0

RGB

rgb(24, 221, 240)

HSL

hsl(185.3, 87.8%, 51.8%)

HSV / HSB

hsv(185.3, 90%, 94.1%)

CMYK

cmyk(90%, 7.9%, 0%, 5.9%)

LAB

lab(80.85, -36.74, -21.72)

LCH

lch(80.85, 42.68, 210.59)

OKLCH

oklch(82.1%, 0.1379, 206.03)

HWB

hwb(185.3, 9.4%, 5.9%)

Harmony colors

Complementary

#f02b18

Analogous

#18f097

#18ddf0

#1871f0

Triadic

#18ddf0

#f018dd

#ddf018

Split-complementary

#18ddf0

#f01871

#f09718

Tetradic

#18ddf0

#2b18f0

#f02b18

#ddf018

Square

#18ddf0

#9718f0

#f02b18

#71f018

Shades

Color #18ddf0 mixed toward black.

#0dbecf

#0b98a5

#08727c

#054c53

#032629

Tints

Color #18ddf0 mixed toward white.

#3fe3f3

#65e8f5

#8ceef8

#b2f4fa

#d9f9fd

Tones

Color #18ddf0 mixed toward gray.

#2acede

#3cbfcc

#4eb1ba

#60a2a8

#729396

Accessibility

Aa White text on this color

1.66:1

Aa Black text on this color

12.64:1

Black text reads better on this background (12.64:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#999aec · ΔE 33.1

Deuteranopia

#9082eb · ΔE 38.1

Tritanopia

#3ce8e7 · ΔE 6.9

Achromatopsia

#c9c9c9 · ΔE 23.7

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

Code

CSS

background-color: #18ddf0;

Tailwind (arbitrary value)

bg-[#18ddf0]

Related colors

Powder Blue #b0e0e6

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Aqua #00ffff

Azure #f0ffff

Dark Cyan #008b8b

Frequently asked questions

#18ddf0 (#18ddf0) is rgb(24, 221, 240) in RGB.

No, #18ddf0 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 #18ddf0, or check how it holds up for accessibility.

Generate a palette → Check contrast