#66D03F#66D03F

#66D03F is a light, highly saturated green. Relative luminance 0.483; OKLCH L 76.6% C 0.205 H 138.6°. Best body text is #000000 at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#66D03F
RGB	rgb(102, 208, 63)
HSL	hsl(104, 61%, 53%)
HSV	hsv(104, 70%, 82%)
CMYK	cmyk(51%, 0%, 69.7%, 18.4%)
CIE-LAB	lab(75.01, -55.94, 59.71)
CIE-LCH	lch(75.01, 81.82, 133.13°)
OKLab	oklab(76.59% -0.1542 0.1358)
OKLCH	oklch(76.59% 0.205 138.6)
XYZ	xyz(28.9315, 48.2932, 12.4986)
Luminance	0.4829 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D03F #A93FD0

analogous

#AED03F #66D03F #3FD060

triadic

#66D03F #3F66D0 #D03F66

tetradic

#66D03F #3FAED0 #A93FD0 #D0603F

square

#66D03F #3FAED0 #A93FD0 #D0603F

split-complementary

#66D03F #603FD0 #D03FAE

monochromatic

#35771D #4BA929 #66D03F #8DDC70 #B4E8A1

Accessibility & contrast

On white

1.97

#66D03F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.66

#66D03F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D03F

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D03F	#FFFFFF	#000000	##000000
##66D03F	1.00	1.97	10.66	10.66
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.66	21.00	1.00	1.00
##000000	10.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BE28

Deuteranopia (green-blind)

#C8B54D

Tritanopia (blue-blind)

#5DC9B3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #66d03f;
/* rgb */ color: rgb(102, 208, 63);
/* oklch */ color: oklch(76.6% 0.205 138.6);

Tailwind

colors: {
  custom: {
    50: '#9bdf7c',
    500: '#66d03f',
    950: '#000000',
  },
}

SCSS

$custom: #66d03f;
$custom-light: #9bdf7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66d03f",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 63
  },
  "hsl": {
    "h": 103.862,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.76593,
    "c": 0.20547,
    "h": 138.6
  },
  "luminance": 0.48295
}

Semantic roles & 50–950 ramp

primary

#66D03F

secondary

#C496D5

accent

#44E4B9

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D03F

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

Preview Lab → · Contrast checker → · Palette generator →