#66D78A#66D78A

#66D78A is a light, vivid green. Relative luminance 0.533; OKLCH L 79.4% C 0.151 H 151.9°. Best body text is #000000 at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#66D78A
RGB	rgb(102, 215, 138)
HSL	hsl(139, 59%, 62%)
HSV	hsv(139, 53%, 84%)
CMYK	cmyk(52.6%, 0%, 35.8%, 15.7%)
CIE-LAB	lab(78.03, -49.09, 28.44)
CIE-LCH	lch(78.03, 56.73, 149.91°)
OKLab	oklab(79.36% -0.1333 0.0712)
OKLCH	oklch(79.36% 0.151 151.9)
XYZ	xyz(34.3649, 53.2577, 32.5087)
Luminance	0.5326 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D78A #D766B3

analogous

#7BD766 #66D78A #66D7C2

triadic

#66D78A #8A66D7 #D78A66

tetradic

#66D78A #667BD7 #D766B3 #D7C266

square

#66D78A #667BD7 #D766B3 #D7C266

split-complementary

#66D78A #C266D7 #D7667B

monochromatic

#289A4D #35CA65 #66D78A #97E4AF #C7F0D4

Accessibility & contrast

On white

1.80

#66D78A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.65

#66D78A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D78A

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D78A	#FFFFFF	#000000	##000000
##66D78A	1.00	1.80	11.65	11.65
#FFFFFF	1.80	1.00	21.00	21.00
#000000	11.65	21.00	1.00	1.00
##000000	11.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8C885

Deuteranopia (green-blind)

#C8BD8F

Tritanopia (blue-blind)

#4AD4C3

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66d78a;
/* rgb */ color: rgb(102, 215, 138);
/* oklch */ color: oklch(79.4% 0.151 151.9);

Tailwind

colors: {
  custom: {
    50: '#99e4ac',
    500: '#66d78a',
    950: '#000000',
  },
}

SCSS

$custom: #66d78a;
$custom-light: #99e4ac;
$custom-dark: #000000;

JSON

{
  "hex": "#66d78a",
  "rgb": {
    "r": 102,
    "g": 215,
    "b": 138
  },
  "hsl": {
    "h": 139.115,
    "s": 58.549,
    "l": 62.157
  },
  "oklch": {
    "l": 0.7936,
    "c": 0.15115,
    "h": 151.9
  },
  "luminance": 0.53261
}

Semantic roles & 50–950 ramp

primary

#66D78A

secondary

#9F4281

accent

#1F91C6

background

#FCFEFD

surface

#F5FCF7

border

#CFD5D0

text

#0F1610

muted

#808481

Preview Lab

Preview with #66D78A

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

Preview Lab → · Contrast checker → · Palette generator →