#66BC3F#66BC3F

#66BC3F is a light, vivid green. Relative luminance 0.392; OKLCH L 71.5% C 0.181 H 137.5°. Best body text is #000000 at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#66BC3F
RGB	rgb(102, 188, 63)
HSL	hsl(101, 50%, 49%)
HSV	hsv(101, 66%, 74%)
CMYK	cmyk(45.7%, 0%, 66.5%, 26.3%)
CIE-LAB	lab(68.86, -48.17, 53.23)
CIE-LCH	lch(68.86, 71.79, 132.14°)
OKLab	oklab(71.54% -0.1332 0.1222)
OKLCH	oklch(71.54% 0.181 137.5)
XYZ	xyz(24.3591, 39.1485, 10.9745)
Luminance	0.3915 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC3F #953FBC

analogous

#A5BC3F #66BC3F #3FBC57

triadic

#66BC3F #3F66BC #BC3F66

tetradic

#66BC3F #3FA5BC #953FBC #BC573F

square

#66BC3F #3FA5BC #953FBC #BC573F

split-complementary

#66BC3F #573FBC #BC3FA5

monochromatic

#346020 #4D8E30 #66BC3F #8ACD6B #AEDD99

Accessibility & contrast

On white

2.38

#66BC3F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.83

#66BC3F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC3F

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC3F	#FFFFFF	#000000	##000000
##66BC3F	1.00	2.38	8.83	8.83
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.83	21.00	1.00	1.00
##000000	8.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AD2E

Deuteranopia (green-blind)

#B6A54A

Tritanopia (blue-blind)

#61B6A2

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc3f;
/* rgb */ color: rgb(102, 188, 63);
/* oklch */ color: oklch(71.5% 0.181 137.5);

Tailwind

colors: {
  custom: {
    50: '#98d17a',
    500: '#66bc3f',
    950: '#000000',
  },
}

SCSS

$custom: #66bc3f;
$custom-light: #98d17a;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc3f",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 63
  },
  "hsl": {
    "h": 101.28,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.71539,
    "c": 0.18073,
    "h": 137.5
  },
  "luminance": 0.3915
}

Semantic roles & 50–950 ramp

primary

#66BC3F

secondary

#B68EC9

accent

#4ED9AE

background

#F9FCF7

surface

#F2F9EE

border

#CCD2C9

text

#0E140A

muted

#7E827C

Preview Lab

Preview with #66BC3F

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

Preview Lab → · Contrast checker → · Palette generator →