#66D03B#66D03B

#66D03B is a light, highly saturated green. Relative luminance 0.483; OKLCH L 76.6% C 0.208 H 138.3°. Best body text is #000000 at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#66D03B
RGB	rgb(102, 208, 59)
HSL	hsl(103, 61%, 52%)
HSV	hsv(103, 72%, 82%)
CMYK	cmyk(51%, 0%, 71.6%, 18.4%)
CIE-LAB	lab(74.98, -56.24, 61.16)
CIE-LCH	lch(74.98, 83.09, 132.60°)
OKLab	oklab(76.56% -0.1553 0.1383)
OKLCH	oklch(76.56% 0.208 138.3)
XYZ	xyz(28.8238, 48.2501, 11.9312)
Luminance	0.4825 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D03B #A53BD0

analogous

#B0D03B #66D03B #3BD05B

triadic

#66D03B #3B66D0 #D03B66

tetradic

#66D03B #3BB0D0 #A53BD0 #D05B3B

square

#66D03B #3BB0D0 #A53BD0 #D05B3B

split-complementary

#66D03B #5B3BD0 #D03BB0

monochromatic

#36751C #4CA628 #66D03B #8DDC6C #B3E89E

Accessibility & contrast

On white

1.97

#66D03B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.65

#66D03B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D03B

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D03B	#FFFFFF	#000000	##000000
##66D03B	1.00	1.97	10.65	10.65
#FFFFFF	1.97	1.00	21.00	21.00
#000000	10.65	21.00	1.00	1.00
##000000	10.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D6BE21

Deuteranopia (green-blind)

#C9B54A

Tritanopia (blue-blind)

#5DC9B3

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #66d03b;
/* rgb */ color: rgb(102, 208, 59);
/* oklch */ color: oklch(76.6% 0.208 138.3);

Tailwind

colors: {
  custom: {
    50: '#9bdf7a',
    500: '#66d03b',
    950: '#000000',
  },
}

SCSS

$custom: #66d03b;
$custom-light: #9bdf7a;
$custom-dark: #000000;

JSON

{
  "hex": "#66d03b",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 59
  },
  "hsl": {
    "h": 102.685,
    "s": 61.317,
    "l": 52.353
  },
  "oklch": {
    "l": 0.76562,
    "c": 0.20793,
    "h": 138.3
  },
  "luminance": 0.48252
}

Semantic roles & 50–950 ramp

primary

#66D03B

secondary

#C193D4

accent

#43E4B6

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D03B

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

Preview Lab → · Contrast checker → · Palette generator →