#66DA51#66DA51

#66DA51 is a light, highly saturated green. Relative luminance 0.536; OKLCH L 79.3% C 0.205 H 140.7°. Best body text is #000000 at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#66DA51
RGB	rgb(102, 218, 81)
HSL	hsl(111, 65%, 59%)
HSV	hsv(111, 63%, 85%)
CMYK	cmyk(53.2%, 0%, 62.8%, 14.5%)
CIE-LAB	lab(78.20, -58.09, 55.94)
CIE-LCH	lch(78.20, 80.64, 136.08°)
OKLab	oklab(79.27% -0.1589 0.1299)
OKLCH	oklch(79.27% 0.205 140.7)
XYZ	xyz(32.0347, 53.5591, 16.4328)
Luminance	0.5356 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DA51 #C551DA

analogous

#AADA51 #66DA51 #51DA80

triadic

#66DA51 #5166DA #DA5166

tetradic

#66DA51 #51AADA #C551DA #DA8051

square

#66DA51 #51AADA #C551DA #DA8051

split-complementary

#66DA51 #8051DA #DA51AA

monochromatic

#31921F #41C42A #66DA51 #92E583 #BFEFB6

Accessibility & contrast

On white

1.79

#66DA51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.71

#66DA51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DA51

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DA51	#FFFFFF	#000000	##000000
##66DA51	1.00	1.79	11.71	11.71
#FFFFFF	1.79	1.00	21.00	21.00
#000000	11.71	21.00	1.00	1.00
##000000	11.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DFC841

Deuteranopia (green-blind)

#D0BE5D

Tritanopia (blue-blind)

#58D3BD

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66da51;
/* rgb */ color: rgb(102, 218, 81);
/* oklch */ color: oklch(79.3% 0.205 140.7);

Tailwind

colors: {
  custom: {
    50: '#9be687',
    500: '#66da51',
    950: '#000000',
  },
}

SCSS

$custom: #66da51;
$custom-light: #9be687;
$custom-dark: #000000;

JSON

{
  "hex": "#66da51",
  "rgb": {
    "r": 102,
    "g": 218,
    "b": 81
  },
  "hsl": {
    "h": 110.803,
    "s": 64.929,
    "l": 58.627
  },
  "oklch": {
    "l": 0.79268,
    "c": 0.20527,
    "h": 140.7
  },
  "luminance": 0.53562
}

Semantic roles & 50–950 ramp

primary

#66DA51

secondary

#883997

accent

#40E8CE

background

#FCFEFC

surface

#F5FCF3

border

#CFD5CD

text

#0F160C

muted

#80847F

Preview Lab

Preview with #66DA51

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

Preview Lab → · Contrast checker → · Palette generator →