#66C131#66C131

#66C131 is a light, vivid yellow-green. Relative luminance 0.412; OKLCH L 72.7% C 0.196 H 136.6°. Best body text is #000000 at 9.24:1 contrast (WCAG AA passes).

Color values

HEX	#66C131
RGB	rgb(102, 193, 49)
HSL	hsl(98, 60%, 47%)
HSV	hsv(98, 75%, 76%)
CMYK	cmyk(47.2%, 0%, 74.6%, 24.3%)
CIE-LAB	lab(70.31, -51.21, 60.00)
CIE-LCH	lch(70.31, 78.88, 130.48°)
OKLab	oklab(72.69% -0.1423 0.1345)
OKLCH	oklch(72.69% 0.196 136.6)
XYZ	xyz(25.1031, 41.1848, 9.5318)
Luminance	0.4119 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C131 #8C31C1

analogous

#AEC131 #66C131 #31C144

triadic

#66C131 #3166C1 #C13166

tetradic

#66C131 #31AEC1 #8C31C1 #C14431

square

#66C131 #31AEC1 #8C31C1 #C14431

split-complementary

#66C131 #4431C1 #C131AE

monochromatic

#325F18 #4C9025 #66C131 #87D55A #ABE28B

Accessibility & contrast

On white

2.27

#66C131 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.24

#66C131 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C131

9.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C131	#FFFFFF	#000000	##000000
##66C131	1.00	2.27	9.24	9.24
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.24	21.00	1.00	1.00
##000000	9.24	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8B112

Deuteranopia (green-blind)

#BCA940

Tritanopia (blue-blind)

#61BAA5

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #66c131;
/* rgb */ color: rgb(102, 193, 49);
/* oklch */ color: oklch(72.7% 0.196 136.6);

Tailwind

colors: {
  custom: {
    50: '#9ad473',
    500: '#66c131',
    950: '#000000',
  },
}

SCSS

$custom: #66c131;
$custom-light: #9ad473;
$custom-dark: #000000;

JSON

{
  "hex": "#66c131",
  "rgb": {
    "r": 102,
    "g": 193,
    "b": 49
  },
  "hsl": {
    "h": 97.917,
    "s": 59.504,
    "l": 47.451
  },
  "oklch": {
    "l": 0.72695,
    "c": 0.19581,
    "h": 136.6
  },
  "luminance": 0.41186
}

Semantic roles & 50–950 ramp

primary

#66C131

secondary

#B182CC

accent

#45E3A9

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C131

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

Preview Lab → · Contrast checker → · Palette generator →