#42e5ff

Color #42e5ff

A vivid, highly saturated light cyan.

Closest named color Dark Turquoise #00ced1 · ΔE 15.92 Nearest Tailwind class cyan-300 #53eafd · ΔE 2.3

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Conversions

HEX

#42e5ff

RGB

rgb(66, 229, 255)

HSL

hsl(188.3, 100%, 62.9%)

HSV / HSB

hsv(188.3, 74.1%, 100%)

CMYK

cmyk(74.1%, 10.2%, 0%, 0%)

LAB

lab(84.18, -32.78, -24.54)

LCH

lch(84.18, 40.95, 216.82)

OKLCH

oklch(85.1%, 0.1335, 210.77)

HWB

hwb(188.3, 25.9%, 0%)

Harmony colors

Complementary

#ff5c42

Analogous

#42ffbb

#42e5ff

#4286ff

Triadic

#42e5ff

#ff42e5

#e5ff42

Split-complementary

#42e5ff

#ff4286

#ffbb42

Tetradic

#42e5ff

#5c42ff

#ff5c42

#e5ff42

Square

#42e5ff

#bb42ff

#ff5c42

#86ff42

Shades

Color #42e5ff mixed toward black.

#0cddff

#00b8d6

#008aa0

#005c6b

#002e35

Tints

Color #42e5ff mixed toward white.

#61e9ff

#81eeff

#a0f2ff

#c0f6ff

#dffbff

Tones

Color #42e5ff mixed toward gray.

#52d9ef

#61cedf

#71c3d0

#81b7c0

#91acb0

Accessibility

Aa White text on this color

1.51:1

Aa Black text on this color

13.88:1

Black text reads better on this background (13.88:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#a4a5f9 · ΔE 31.1

Deuteranopia

#9b8ff8 · ΔE 35.3

Tritanopia

#55f4f3 · ΔE 9.2

Achromatopsia

#d2d2d2 · ΔE 23.2

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

Code

CSS

background-color: #42e5ff;

Tailwind (arbitrary value)

bg-[#42e5ff]

Related colors

Powder Blue #b0e0e6

Light Blue #add8e6

Cadet Blue #5f9ea0

Deep Sky Blue #00bfff

Dark Turquoise #00ced1

Aqua #00ffff

Frequently asked questions

#42e5ff (#42e5ff) is rgb(66, 229, 255) in RGB.

No, #42e5ff 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 #42e5ff, or check how it holds up for accessibility.

Generate a palette → Check contrast