#66F631#66F631

#66F631 is a very light, highly saturated green. Relative luminance 0.690; OKLCH L 86.0% C 0.255 H 139.3°. Best body text is #000000 at 14.79:1 contrast (WCAG AA passes).

Color values

HEX	#66F631
RGB	rgb(102, 246, 49)
HSL	hsl(104, 92%, 58%)
HSV	hsv(104, 80%, 96%)
CMYK	cmyk(58.5%, 0%, 80.1%, 3.5%)
CIE-LAB	lab(86.48, -70.22, 75.36)
CIE-LCH	lch(86.48, 103.01, 132.98°)
OKLab	oklab(86.03% -0.1934 0.1666)
OKLCH	oklch(86.03% 0.255 139.3)
XYZ	xyz(38.9880, 68.9546, 14.1601)
Luminance	0.6896 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66F631 #C131F6

analogous

#C8F631 #66F631 #31F65E

triadic

#66F631 #3166F6 #F63166

tetradic

#66F631 #31C8F6 #C131F6 #F65E31

square

#66F631 #31C8F6 #C131F6 #F65E31

split-complementary

#66F631 #5E31F6 #F631C8

monochromatic

#32A507 #43E00A #66F631 #92F96C #BDFBA6

Accessibility & contrast

On white

1.42

#66F631 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.79

#66F631 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F631

14.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66F631	#FFFFFF	#000000	##000000
##66F631	1.00	1.42	14.79	14.79
#FFFFFF	1.42	1.00	21.00	21.00
#000000	14.79	21.00	1.00	1.00
##000000	14.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FDE000

Deuteranopia (green-blind)

#ECD44A

Tritanopia (blue-blind)

#55EED2

Achromatopsia (no color)

#D8D8D8

Design tokens & code

CSS

--color: #66f631;
/* rgb */ color: rgb(102, 246, 49);
/* oklch */ color: oklch(86.0% 0.255 139.3);

Tailwind

colors: {
  custom: {
    50: '#a1fa7a',
    500: '#66f631',
    950: '#000000',
  },
}

SCSS

$custom: #66f631;
$custom-light: #a1fa7a;
$custom-dark: #000000;

JSON

{
  "hex": "#66f631",
  "rgb": {
    "r": 102,
    "g": 246,
    "b": 49
  },
  "hsl": {
    "h": 103.858,
    "s": 91.628,
    "l": 57.843
  },
  "oklch": {
    "l": 0.86034,
    "c": 0.25531,
    "h": 139.3
  },
  "luminance": 0.68958
}

Semantic roles & 50–950 ramp

primary

#66F631

secondary

#8424A7

accent

#29FFC5

background

#FDFFFB

surface

#F7FFF2

border

#D0D7CC

text

#10170A

muted

#81857D

Preview Lab

Preview with #66F631

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

Preview Lab → · Contrast checker → · Palette generator →