#66C331#66C331

#66C331 is a light, vivid yellow-green. Relative luminance 0.421; OKLCH L 73.2% C 0.198 H 136.8°. Best body text is #000000 at 9.42:1 contrast (WCAG AA passes).

Color values

HEX	#66C331
RGB	rgb(102, 195, 49)
HSL	hsl(98, 60%, 48%)
HSV	hsv(98, 75%, 76%)
CMYK	cmyk(47.7%, 0%, 74.9%, 23.5%)
CIE-LAB	lab(70.92, -51.98, 60.60)
CIE-LCH	lch(70.92, 79.84, 130.62°)
OKLab	oklab(73.2% -0.1444 0.1358)
OKLCH	oklch(73.2% 0.198 136.8)
XYZ	xyz(25.5482, 42.0750, 9.6802)
Luminance	0.4208 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C331 #8E31C3

analogous

#AFC331 #66C331 #31C345

triadic

#66C331 #3166C3 #C33166

tetradic

#66C331 #31AFC3 #8E31C3 #C34531

square

#66C331 #31AFC3 #8E31C3 #C34531

split-complementary

#66C331 #4531C3 #C331AF

monochromatic

#336118 #4C9225 #66C331 #88D65B #ABE28C

Accessibility & contrast

On white

2.23

#66C331 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.42

#66C331 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C331

9.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C331	#FFFFFF	#000000	##000000
##66C331	1.00	2.23	9.42	9.42
#FFFFFF	2.23	1.00	21.00	21.00
#000000	9.42	21.00	1.00	1.00
##000000	9.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAB211

Deuteranopia (green-blind)

#BDAB40

Tritanopia (blue-blind)

#61BCA7

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66c331;
/* rgb */ color: rgb(102, 195, 49);
/* oklch */ color: oklch(73.2% 0.198 136.8);

Tailwind

colors: {
  custom: {
    50: '#9ad673',
    500: '#66c331',
    950: '#000000',
  },
}

SCSS

$custom: #66c331;
$custom-light: #9ad673;
$custom-dark: #000000;

JSON

{
  "hex": "#66c331",
  "rgb": {
    "r": 102,
    "g": 195,
    "b": 49
  },
  "hsl": {
    "h": 98.219,
    "s": 59.836,
    "l": 47.843
  },
  "oklch": {
    "l": 0.73202,
    "c": 0.1982,
    "h": 136.8
  },
  "luminance": 0.42077
}

Semantic roles & 50–950 ramp

primary

#66C331

secondary

#B283CC

accent

#45E3AA

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C331

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

Preview Lab → · Contrast checker → · Palette generator →