#66C03C#66C03C

#66C03C is a light, vivid green. Relative luminance 0.408; OKLCH L 72.5% C 0.188 H 137.4°. Best body text is #000000 at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#66C03C
RGB	rgb(102, 192, 60)
HSL	hsl(101, 52%, 49%)
HSV	hsv(101, 69%, 75%)
CMYK	cmyk(46.9%, 0%, 68.7%, 24.7%)
CIE-LAB	lab(70.07, -50.02, 55.72)
CIE-LCH	lch(70.07, 74.88, 131.91°)
OKLab	oklab(72.52% -0.1384 0.127)
OKLCH	oklch(72.52% 0.188 137.4)
XYZ	xyz(25.1439, 40.8486, 10.8337)
Luminance	0.4085 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C03C #963CC0

analogous

#A8C03C #66C03C #3CC054

triadic

#66C03C #3C66C0 #C03C66

tetradic

#66C03C #3CA8C0 #963CC0 #C0543C

square

#66C03C #3CA8C0 #963CC0 #C0543C

split-complementary

#66C03C #543CC0 #C03CA8

monochromatic

#34631F #4D912D #66C03C #8AD069 #AEDF98

Accessibility & contrast

On white

2.29

#66C03C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.17

#66C03C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C03C

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C03C	#FFFFFF	#000000	##000000
##66C03C	1.00	2.29	9.17	9.17
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.17	21.00	1.00	1.00
##000000	9.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6B028

Deuteranopia (green-blind)

#BAA848

Tritanopia (blue-blind)

#61B9A6

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66c03c;
/* rgb */ color: rgb(102, 192, 60);
/* oklch */ color: oklch(72.5% 0.188 137.4);

Tailwind

colors: {
  custom: {
    50: '#99d479',
    500: '#66c03c',
    950: '#000000',
  },
}

SCSS

$custom: #66c03c;
$custom-light: #99d479;
$custom-dark: #000000;

JSON

{
  "hex": "#66c03c",
  "rgb": {
    "r": 102,
    "g": 192,
    "b": 60
  },
  "hsl": {
    "h": 100.909,
    "s": 52.381,
    "l": 49.412
  },
  "oklch": {
    "l": 0.72525,
    "c": 0.18784,
    "h": 137.4
  },
  "luminance": 0.4085
}

Semantic roles & 50–950 ramp

primary

#66C03C

secondary

#B78DCA

accent

#4CDCAE

background

#F9FDF7

surface

#F2FAEE

border

#CCD3C9

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C03C

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

Preview Lab → · Contrast checker → · Palette generator →