#66BB40#66BB40

#66BB40 is a light, vivid green. Relative luminance 0.387; OKLCH L 71.3% C 0.179 H 137.5°. Best body text is #000000 at 8.75:1 contrast (WCAG AA passes).

Color values

HEX	#66BB40
RGB	rgb(102, 187, 64)
HSL	hsl(101, 49%, 49%)
HSV	hsv(101, 66%, 73%)
CMYK	cmyk(45.5%, 0%, 65.8%, 26.7%)
CIE-LAB	lab(68.56, -47.68, 52.50)
CIE-LCH	lch(68.56, 70.92, 132.25°)
OKLab	oklab(71.3% -0.1318 0.1207)
OKLCH	oklch(71.3% 0.179 137.5)
XYZ	xyz(24.1745, 38.7341, 11.0521)
Luminance	0.3874 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BB40 #9540BB

analogous

#A4BB40 #66BB40 #40BB57

triadic

#66BB40 #4066BB #BB4066

tetradic

#66BB40 #40A4BB #9540BB #BB5740

square

#66BB40 #40A4BB #9540BB #BB5740

split-complementary

#66BB40 #5740BB #BB40A4

monochromatic

#346021 #4D8D30 #66BB40 #8ACD6C #AEDC99

Accessibility & contrast

On white

2.40

#66BB40 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.75

#66BB40 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB40

8.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BB40	#FFFFFF	#000000	##000000
##66BB40	1.00	2.40	8.75	8.75
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.75	21.00	1.00	1.00
##000000	8.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1AC30

Deuteranopia (green-blind)

#B5A54B

Tritanopia (blue-blind)

#61B5A2

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66bb40;
/* rgb */ color: rgb(102, 187, 64);
/* oklch */ color: oklch(71.3% 0.179 137.5);

Tailwind

colors: {
  custom: {
    50: '#98d07a',
    500: '#66bb40',
    950: '#000000',
  },
}

SCSS

$custom: #66bb40;
$custom-light: #98d07a;
$custom-dark: #000000;

JSON

{
  "hex": "#66bb40",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 64
  },
  "hsl": {
    "h": 101.463,
    "s": 49.004,
    "l": 49.216
  },
  "oklch": {
    "l": 0.71295,
    "c": 0.17872,
    "h": 137.5
  },
  "luminance": 0.38736
}

Semantic roles & 50–950 ramp

primary

#66BB40

secondary

#B68FC8

accent

#4FD9AE

background

#F9FCF7

surface

#F2F9EE

border

#CCD2C9

text

#0E140A

muted

#7E827C

Preview Lab

Preview with #66BB40

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

Preview Lab → · Contrast checker → · Palette generator →