#66CC4E#66CC4E

#66CC4E is a light, vivid green. Relative luminance 0.466; OKLCH L 75.7% C 0.190 H 140.0°. Best body text is #000000 at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#66CC4E
RGB	rgb(102, 204, 78)
HSL	hsl(109, 55%, 55%)
HSV	hsv(109, 62%, 80%)
CMYK	cmyk(50%, 0%, 61.8%, 20%)
CIE-LAB	lab(73.91, -53.08, 52.42)
CIE-LCH	lch(73.91, 74.60, 135.35°)
OKLab	oklab(75.72% -0.1455 0.1221)
OKLCH	oklch(75.72% 0.19 140)
XYZ	xyz(28.4463, 46.5585, 14.6940)
Luminance	0.4656 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CC4E #B44ECC

analogous

#A5CC4E #66CC4E #4ECC75

triadic

#66CC4E #4E66CC #CC4E66

tetradic

#66CC4E #4EA5CC #B44ECC #CC754E

square

#66CC4E #4EA5CC #B44ECC #CC754E

split-complementary

#66CC4E #754ECC #CC4EA5

monochromatic

#357C24 #49AB31 #66CC4E #8FDA7E #B8E7AD

Accessibility & contrast

On white

2.04

#66CC4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.31

#66CC4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC4E

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CC4E	#FFFFFF	#000000	##000000
##66CC4E	1.00	2.04	10.31	10.31
#FFFFFF	2.04	1.00	21.00	21.00
#000000	10.31	21.00	1.00	1.00
##000000	10.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1BB40

Deuteranopia (green-blind)

#C4B258

Tritanopia (blue-blind)

#5CC6B1

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66cc4e;
/* rgb */ color: rgb(102, 204, 78);
/* oklch */ color: oklch(75.7% 0.190 140.0);

Tailwind

colors: {
  custom: {
    50: '#9adc84',
    500: '#66cc4e',
    950: '#000000',
  },
}

SCSS

$custom: #66cc4e;
$custom-light: #9adc84;
$custom-dark: #000000;

JSON

{
  "hex": "#66cc4e",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 78
  },
  "hsl": {
    "h": 108.571,
    "s": 55.263,
    "l": 55.294
  },
  "oklch": {
    "l": 0.75725,
    "c": 0.18997,
    "h": 140
  },
  "luminance": 0.46561
}

Semantic roles & 50–950 ramp

primary

#66CC4E

secondary

#CBA1D5

accent

#49DFC2

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CC4E

Body copy rendered with the generated semantic roles for this colour.

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