#66DA3D#66DA3D

#66DA3D is a light, highly saturated green. Relative luminance 0.533; OKLCH L 79.1% C 0.218 H 138.9°. Best body text is #000000 at 11.66:1 contrast (WCAG AA passes).

Color values

HEX	#66DA3D
RGB	rgb(102, 218, 61)
HSL	hsl(104, 68%, 55%)
HSV	hsv(104, 72%, 85%)
CMYK	cmyk(53.2%, 0%, 72%, 14.5%)
CIE-LAB	lab(78.05, -59.78, 63.56)
CIE-LCH	lch(78.05, 87.25, 133.25°)
OKLab	oklab(79.1% -0.1647 0.1436)
OKLCH	oklch(79.1% 0.219 138.9)
XYZ	xyz(31.3920, 53.3020, 13.0481)
Luminance	0.5331 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66DA3D #B13DDA

analogous

#B5DA3D #66DA3D #3DDA63

triadic

#66DA3D #3D66DA #DA3D66

tetradic

#66DA3D #3DB5DA #B13DDA #DA633D

square

#66DA3D #3DB5DA #B13DDA #DA633D

split-complementary

#66DA3D #633DDA #DA3DB5

monochromatic

#358419 #4AB723 #66DA3D #8FE470 #B7EEA4

Accessibility & contrast

On white

1.80

#66DA3D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.66

#66DA3D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66DA3D

11.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66DA3D	#FFFFFF	#000000	##000000
##66DA3D	1.00	1.80	11.66	11.66
#FFFFFF	1.80	1.00	21.00	21.00
#000000	11.66	21.00	1.00	1.00
##000000	11.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E0C721

Deuteranopia (green-blind)

#D2BD4D

Tritanopia (blue-blind)

#5BD3BB

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #66da3d;
/* rgb */ color: rgb(102, 218, 61);
/* oklch */ color: oklch(79.1% 0.218 138.9);

Tailwind

colors: {
  custom: {
    50: '#9ce67c',
    500: '#66da3d',
    950: '#000000',
  },
}

SCSS

$custom: #66da3d;
$custom-light: #9ce67c;
$custom-dark: #000000;

JSON

{
  "hex": "#66da3d",
  "rgb": {
    "r": 102,
    "g": 218,
    "b": 61
  },
  "hsl": {
    "h": 104.331,
    "s": 67.965,
    "l": 54.706
  },
  "oklch": {
    "l": 0.79095,
    "c": 0.2185,
    "h": 138.9
  },
  "luminance": 0.53305
}

Semantic roles & 50–950 ramp

primary

#66DA3D

secondary

#73318A

accent

#3DEBBD

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F160A

muted

#80847D

Preview Lab

Preview with #66DA3D

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

Preview Lab → · Contrast checker → · Palette generator →