#66D951#66D951

#66D951 is a light, highly saturated green. Relative luminance 0.530; OKLCH L 79.0% C 0.204 H 140.7°. Best body text is #000000 at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#66D951
RGB	rgb(102, 217, 81)
HSL	hsl(111, 64%, 58%)
HSV	hsv(111, 63%, 85%)
CMYK	cmyk(53%, 0%, 62.7%, 14.9%)
CIE-LAB	lab(77.90, -57.72, 55.60)
CIE-LCH	lch(77.90, 80.14, 136.07°)
OKLab	oklab(79.02% -0.1579 0.1292)
OKLCH	oklch(79.02% 0.204 140.7)
XYZ	xyz(31.7761, 53.0420, 16.3466)
Luminance	0.5304 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D951 #C451D9

analogous

#AAD951 #66D951 #51D980

triadic

#66D951 #5166D9 #D95166

tetradic

#66D951 #51AAD9 #C451D9 #D98051

square

#66D951 #51AAD9 #C451D9 #D98051

split-complementary

#66D951 #8051D9 #D951AA

monochromatic

#31901F #42C22A #66D951 #92E483 #BEEFB5

Accessibility & contrast

On white

1.81

#66D951 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.61

#66D951 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D951

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D951	#FFFFFF	#000000	##000000
##66D951	1.00	1.81	11.61	11.61
#FFFFFF	1.81	1.00	21.00	21.00
#000000	11.61	21.00	1.00	1.00
##000000	11.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DEC741

Deuteranopia (green-blind)

#CFBD5C

Tritanopia (blue-blind)

#59D2BC

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66d951;
/* rgb */ color: rgb(102, 217, 81);
/* oklch */ color: oklch(79.0% 0.204 140.7);

Tailwind

colors: {
  custom: {
    50: '#9be687',
    500: '#66d951',
    950: '#000000',
  },
}

SCSS

$custom: #66d951;
$custom-light: #9be687;
$custom-dark: #000000;

JSON

{
  "hex": "#66d951",
  "rgb": {
    "r": 102,
    "g": 217,
    "b": 81
  },
  "hsl": {
    "h": 110.735,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.79017,
    "c": 0.20403,
    "h": 140.7
  },
  "luminance": 0.53045
}

Semantic roles & 50–950 ramp

primary

#66D951

secondary

#873995

accent

#41E7CD

background

#FCFEFC

surface

#F5FCF3

border

#CFD5CD

text

#0F160C

muted

#80847F

Preview Lab

Preview with #66D951

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

Preview Lab → · Contrast checker → · Palette generator →