#66D33B#66D33B

#66D33B is a light, highly saturated green. Relative luminance 0.497; OKLCH L 77.3% C 0.211 H 138.5°. Best body text is #000000 at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#66D33B
RGB	rgb(102, 211, 59)
HSL	hsl(103, 63%, 53%)
HSV	hsv(103, 72%, 83%)
CMYK	cmyk(51.7%, 0%, 72%, 17.3%)
CIE-LAB	lab(75.90, -57.36, 62.09)
CIE-LCH	lch(75.90, 84.53, 132.73°)
OKLab	oklab(77.32% -0.1583 0.1402)
OKLCH	oklch(77.32% 0.211 138.5)
XYZ	xyz(29.5621, 49.7268, 12.1773)
Luminance	0.4973 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D33B #A83BD3

analogous

#B2D33B #66D33B #3BD35C

triadic

#66D33B #3B66D3 #D33B66

tetradic

#66D33B #3BB2D3 #A83BD3 #D35C3B

square

#66D33B #3BB2D3 #A83BD3 #D35C3B

split-complementary

#66D33B #5C3BD3 #D33BB2

monochromatic

#36791B #4CAB26 #66D33B #8DDE6D #B4E99F

Accessibility & contrast

On white

1.92

#66D33B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.95

#66D33B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D33B

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D33B	#FFFFFF	#000000	##000000
##66D33B	1.00	1.92	10.95	10.95
#FFFFFF	1.92	1.00	21.00	21.00
#000000	10.95	21.00	1.00	1.00
##000000	10.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D9C120

Deuteranopia (green-blind)

#CBB84A

Tritanopia (blue-blind)

#5DCCB5

Achromatopsia (no color)

#BBBBBB

Design tokens & code

CSS

--color: #66d33b;
/* rgb */ color: rgb(102, 211, 59);
/* oklch */ color: oklch(77.3% 0.211 138.5);

Tailwind

colors: {
  custom: {
    50: '#9be17a',
    500: '#66d33b',
    950: '#000000',
  },
}

SCSS

$custom: #66d33b;
$custom-light: #9be17a;
$custom-dark: #000000;

JSON

{
  "hex": "#66d33b",
  "rgb": {
    "r": 102,
    "g": 211,
    "b": 59
  },
  "hsl": {
    "h": 103.026,
    "s": 63.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.77318,
    "c": 0.21148,
    "h": 138.5
  },
  "luminance": 0.49729
}

Semantic roles & 50–950 ramp

primary

#66D33B

secondary

#C394D6

accent

#41E6B8

background

#FAFDF7

surface

#F4FBEE

border

#CED4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66D33B

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

Preview Lab → · Contrast checker → · Palette generator →