#cdff21

Color #cdff21

A vivid, highly saturated medium green.

Closest named color Green Yellow #adff2f · ΔE 12.56 Nearest Tailwind class lime-300 #bbf451 · ΔE 5.2

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

Conversions

HEX

#cdff21

RGB

rgb(205, 255, 33)

HSL

hsl(73.5, 100%, 56.5%)

HSV / HSB

hsv(73.5, 87.1%, 100%)

CMYK

cmyk(19.6%, 0%, 87.1%, 0%)

LAB

lab(93.71, -41.12, 86.92)

LCH

lch(93.71, 96.16, 115.32)

OKLCH

oklch(93.2%, 0.223, 123.11)

HWB

hwb(73.5, 12.9%, 0%)

Harmony colors

Complementary

#5321ff

Analogous

#ffc221

#cdff21

#5eff21

Triadic

#cdff21

#21cdff

#ff21cd

Split-complementary

#cdff21

#215eff

#c221ff

Tetradic

#cdff21

#21ff53

#5321ff

#ff21cd

Square

#cdff21

#21ffc2

#5321ff

#ff215e

Shades

Color #cdff21 mixed toward black.

#baf000

#95c000

#709000

#4a6000

#253000

Tints

Color #cdff21 mixed toward white.

#d5ff46

#deff6b

#e6ff90

#eeffb5

#f7ffda

Tones

Color #cdff21 mixed toward gray.

#c3ed34

#b9da46

#afc859

#a4b56b

#9aa37e

Accessibility

Aa White text on this color

1.17:1

Aa Black text on this color

17.92:1

Black text reads better on this background (17.92:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#e4e58a · ΔE 13.2

Deuteranopia

#e1de97 · ΔE 16.5

Tritanopia

#d0b1b9 · ΔE 47.4

Achromatopsia

#ededed · ΔE 30.4

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

Code

CSS

background-color: #cdff21;

Tailwind (arbitrary value)

bg-[#cdff21]

Related colors

Olive Drab #6b8e23

Yellow Green #9acd32

Dark Olive Green #556b2f

Green Yellow #adff2f

Ivory #fffff0

Beige #f5f5dc

Frequently asked questions

#cdff21 (#cdff21) is rgb(205, 255, 33) in RGB.

No, #cdff21 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.

Try it → Accessibility

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 #cdff21, or check how it holds up for accessibility.

Generate a palette → Check contrast