#66D43B#66D43B

#66D43B is a light, highly saturated green. Relative luminance 0.502; OKLCH L 77.6% C 0.213 H 138.5°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX	#66D43B
RGB	rgb(102, 212, 59)
HSL	hsl(103, 64%, 53%)
HSV	hsv(103, 72%, 83%)
CMYK	cmyk(51.9%, 0%, 72.2%, 16.9%)
CIE-LAB	lab(76.21, -57.73, 62.40)
CIE-LCH	lch(76.21, 85.01, 132.77°)
OKLab	oklab(77.57% -0.1593 0.1409)
OKLCH	oklch(77.57% 0.213 138.5)
XYZ	xyz(29.8113, 50.2252, 12.2603)
Luminance	0.5023 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D43B #A93BD4

analogous

#B3D43B #66D43B #3BD45C

triadic

#66D43B #3B66D4 #D43B66

tetradic

#66D43B #3BB3D4 #A93BD4 #D45C3B

square

#66D43B #3BB3D4 #A93BD4 #D45C3B

split-complementary

#66D43B #5C3BD4 #D43BB3

monochromatic

#357A1B #4BAC26 #66D43B #8DDF6D #B4EA9F

Accessibility & contrast

On white

1.90

#66D43B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.05

#66D43B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D43B

11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D43B	#FFFFFF	#000000	##000000
##66D43B	1.00	1.90	11.05	11.05
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.05	21.00	1.00	1.00
##000000	11.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC21F

Deuteranopia (green-blind)

#CCB84A

Tritanopia (blue-blind)

#5DCDB6

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #66d43b;
/* rgb */ color: rgb(102, 212, 59);
/* oklch */ color: oklch(77.6% 0.213 138.5);

Tailwind

colors: {
  custom: {
    50: '#9ce27a',
    500: '#66d43b',
    950: '#000000',
  },
}

SCSS

$custom: #66d43b;
$custom-light: #9ce27a;
$custom-dark: #000000;

JSON

{
  "hex": "#66d43b",
  "rgb": {
    "r": 102,
    "g": 212,
    "b": 59
  },
  "hsl": {
    "h": 103.137,
    "s": 64.017,
    "l": 53.137
  },
  "oklch": {
    "l": 0.7757,
    "c": 0.21266,
    "h": 138.5
  },
  "luminance": 0.50228
}

Semantic roles & 50–950 ramp

primary

#66D43B

secondary

#6B3182

accent

#41E7B8

background

#FCFEFB

surface

#F6FCF2

border

#D0D5CC

text

#0F150A

muted

#80847D

Preview Lab

Preview with #66D43B

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

Preview Lab → · Contrast checker → · Palette generator →