#66D031#66D031

#66D031 is a light, highly saturated green. Relative luminance 0.482; OKLCH L 76.5% C 0.213 H 137.6°. Best body text is #000000 at 10.63:1 contrast (WCAG AA passes).

Color values

HEX	#66D031
RGB	rgb(102, 208, 49)
HSL	hsl(100, 63%, 50%)
HSV	hsv(100, 76%, 82%)
CMYK	cmyk(51%, 0%, 76.4%, 18.4%)
CIE-LAB	lab(74.92, -56.90, 64.49)
CIE-LCH	lch(74.92, 86.00, 131.42°)
OKLab	oklab(76.49% -0.1577 0.1439)
OKLCH	oklch(76.49% 0.213 137.6)
XYZ	xyz(28.5888, 48.1562, 10.6937)
Luminance	0.4816 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D031 #9B31D0

analogous

#B5D031 #66D031 #31D04B

triadic

#66D031 #3166D0 #D03166

tetradic

#66D031 #31B5D0 #9B31D0 #D04B31

square

#66D031 #31B5D0 #9B31D0 #D04B31

split-complementary

#66D031 #4B31D0 #D031B5

monochromatic

#356E19 #4D9F24 #66D031 #8BDB63 #B0E795

Accessibility & contrast

On white

1.98

#66D031 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.63

#66D031 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D031

10.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D031	#FFFFFF	#000000	##000000
##66D031	1.00	1.98	10.63	10.63
#FFFFFF	1.98	1.00	21.00	21.00
#000000	10.63	21.00	1.00	1.00
##000000	10.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D7BE05

Deuteranopia (green-blind)

#C9B542

Tritanopia (blue-blind)

#5EC9B2

Achromatopsia (no color)

#B8B8B8

Design tokens & code

CSS

--color: #66d031;
/* rgb */ color: rgb(102, 208, 49);
/* oklch */ color: oklch(76.5% 0.213 137.6);

Tailwind

colors: {
  custom: {
    50: '#9bdf75',
    500: '#66d031',
    950: '#000000',
  },
}

SCSS

$custom: #66d031;
$custom-light: #9bdf75;
$custom-dark: #000000;

JSON

{
  "hex": "#66d031",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 49
  },
  "hsl": {
    "h": 100,
    "s": 62.846,
    "l": 50.392
  },
  "oklch": {
    "l": 0.76494,
    "c": 0.21344,
    "h": 137.6
  },
  "luminance": 0.48158
}

Semantic roles & 50–950 ramp

primary

#66D031

secondary

#BA8BD2

accent

#42E6AF

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66D031

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

Preview Lab → · Contrast checker → · Palette generator →