#66C040#66C040

#66C040 is a light, vivid green. Relative luminance 0.409; OKLCH L 72.6% C 0.185 H 137.8°. Best body text is #000000 at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#66C040
RGB	rgb(102, 192, 64)
HSL	hsl(102, 50%, 50%)
HSV	hsv(102, 67%, 75%)
CMYK	cmyk(46.9%, 0%, 66.7%, 24.7%)
CIE-LAB	lab(70.10, -49.68, 54.15)
CIE-LCH	lch(70.10, 73.49, 132.54°)
OKLab	oklab(72.56% -0.1372 0.1242)
OKLCH	oklch(72.56% 0.185 137.8)
XYZ	xyz(25.2537, 40.8925, 11.4118)
Luminance	0.4089 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C040 #9A40C0

analogous

#A6C040 #66C040 #40C05A

triadic

#66C040 #4066C0 #C04066

tetradic

#66C040 #40A6C0 #9A40C0 #C05A40

square

#66C040 #40A6C0 #9A40C0 #C05A40

split-complementary

#66C040 #5A40C0 #C040A6

monochromatic

#356421 #4D9230 #66C040 #8BCF6E #B0DE9C

Accessibility & contrast

On white

2.29

#66C040 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.18

#66C040 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C040

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C040	#FFFFFF	#000000	##000000
##66C040	1.00	2.29	9.18	9.18
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.18	21.00	1.00	1.00
##000000	9.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6B02F

Deuteranopia (green-blind)

#BAA84B

Tritanopia (blue-blind)

#60B9A6

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66c040;
/* rgb */ color: rgb(102, 192, 64);
/* oklch */ color: oklch(72.6% 0.185 137.8);

Tailwind

colors: {
  custom: {
    50: '#99d47b',
    500: '#66c040',
    950: '#000000',
  },
}

SCSS

$custom: #66c040;
$custom-light: #99d47b;
$custom-dark: #000000;

JSON

{
  "hex": "#66c040",
  "rgb": {
    "r": 102,
    "g": 192,
    "b": 64
  },
  "hsl": {
    "h": 102.188,
    "s": 50.394,
    "l": 50.196
  },
  "oklch": {
    "l": 0.7256,
    "c": 0.18509,
    "h": 137.8
  },
  "luminance": 0.40894
}

Semantic roles & 50–950 ramp

primary

#66C040

secondary

#BA91CB

accent

#4EDAB0

background

#F9FDF7

surface

#F2FAEE

border

#CCD3C9

text

#0E140A

muted

#7E837C

Preview Lab

Preview with #66C040

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

Preview Lab → · Contrast checker → · Palette generator →