#66BC40#66BC40

#66BC40 is a light, vivid green. Relative luminance 0.392; OKLCH L 71.5% C 0.180 H 137.6°. Best body text is #000000 at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#66BC40
RGB	rgb(102, 188, 64)
HSL	hsl(102, 49%, 49%)
HSV	hsv(102, 66%, 74%)
CMYK	cmyk(45.7%, 0%, 66%, 26.3%)
CIE-LAB	lab(68.87, -48.08, 52.83)
CIE-LCH	lch(68.87, 71.43, 132.31°)
OKLab	oklab(71.55% -0.1329 0.1215)
OKLCH	oklch(71.55% 0.18 137.6)
XYZ	xyz(24.3874, 39.1598, 11.1230)
Luminance	0.3916 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC40 #9640BC

analogous

#A4BC40 #66BC40 #40BC58

triadic

#66BC40 #4066BC #BC4066

tetradic

#66BC40 #40A4BC #9640BC #BC5840

square

#66BC40 #40A4BC #9640BC #BC5840

split-complementary

#66BC40 #5840BC #BC40A4

monochromatic

#346121 #4D8E30 #66BC40 #8ACD6C #AEDD9A

Accessibility & contrast

On white

2.38

#66BC40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.83

#66BC40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC40

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC40	#FFFFFF	#000000	##000000
##66BC40	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)

#C2AD30

Deuteranopia (green-blind)

#B6A54B

Tritanopia (blue-blind)

#61B6A3

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc40;
/* rgb */ color: rgb(102, 188, 64);
/* oklch */ color: oklch(71.5% 0.180 137.6);

Tailwind

colors: {
  custom: {
    50: '#98d17b',
    500: '#66bc40',
    950: '#000000',
  },
}

SCSS

$custom: #66bc40;
$custom-light: #98d17b;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc40",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 64
  },
  "hsl": {
    "h": 101.613,
    "s": 49.206,
    "l": 49.412
  },
  "oklch": {
    "l": 0.71548,
    "c": 0.18001,
    "h": 137.6
  },
  "luminance": 0.39161
}

Semantic roles & 50–950 ramp

primary

#66BC40

secondary

#B78FC9

accent

#4FD9AF

background

#F9FCF7

surface

#F2F9EE

border

#CCD2C9

text

#0E140A

muted

#7E827C

Preview Lab

Preview with #66BC40

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

Preview Lab → · Contrast checker → · Palette generator →