#66CB3B#66CB3B

#66CB3B is a light, highly saturated green. Relative luminance 0.459; OKLCH L 75.3% C 0.202 H 138.0°. Best body text is #000000 at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#66CB3B
RGB	rgb(102, 203, 59)
HSL	hsl(102, 58%, 51%)
HSV	hsv(102, 71%, 80%)
CMYK	cmyk(49.8%, 0%, 70.9%, 20.4%)
CIE-LAB	lab(73.45, -54.36, 59.60)
CIE-LCH	lch(73.45, 80.66, 132.37°)
OKLab	oklab(75.3% -0.1502 0.135)
OKLCH	oklch(75.3% 0.202 138)
XYZ	xyz(27.6239, 45.8504, 11.5312)
Luminance	0.4585 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CB3B #A03BCB

analogous

#AECB3B #66CB3B #3BCB58

triadic

#66CB3B #3B66CB #CB3B66

tetradic

#66CB3B #3BAECB #A03BCB #CB583B

square

#66CB3B #3BAECB #A03BCB #CB583B

split-complementary

#66CB3B #583BCB #CB3BAE

monochromatic

#356E1D #4D9F2A #66CB3B #8CD86B #B2E59C

Accessibility & contrast

On white

2.06

#66CB3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.17

#66CB3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CB3B

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CB3B	#FFFFFF	#000000	##000000
##66CB3B	1.00	2.06	10.17	10.17
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.17	21.00	1.00	1.00
##000000	10.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1BA23

Deuteranopia (green-blind)

#C4B149

Tritanopia (blue-blind)

#5EC4AF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66cb3b;
/* rgb */ color: rgb(102, 203, 59);
/* oklch */ color: oklch(75.3% 0.202 138.0);

Tailwind

colors: {
  custom: {
    50: '#9adc79',
    500: '#66cb3b',
    950: '#000000',
  },
}

SCSS

$custom: #66cb3b;
$custom-light: #9adc79;
$custom-dark: #000000;

JSON

{
  "hex": "#66cb3b",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 59
  },
  "hsl": {
    "h": 102.083,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.75299,
    "c": 0.20195,
    "h": 138
  },
  "luminance": 0.45852
}

Semantic roles & 50–950 ramp

primary

#66CB3B

secondary

#BE91D1

accent

#47E1B3

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CB3B

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

Preview Lab → · Contrast checker → · Palette generator →