#66CB4B#66CB4B

#66CB4B is a light, vivid green. Relative luminance 0.460; OKLCH L 75.4% C 0.191 H 139.6°. Best body text is #000000 at 10.21:1 contrast (WCAG AA passes).

Color values

HEX	#66CB4B
RGB	rgb(102, 203, 75)
HSL	hsl(107, 55%, 55%)
HSV	hsv(107, 63%, 80%)
CMYK	cmyk(49.8%, 0%, 63.1%, 20.4%)
CIE-LAB	lab(73.57, -52.99, 53.34)
CIE-LCH	lch(73.57, 75.19, 134.81°)
OKLab	oklab(75.44% -0.1454 0.1238)
OKLCH	oklch(75.44% 0.191 139.6)
XYZ	xyz(28.1043, 46.0426, 14.0614)
Luminance	0.4605 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CB4B #B04BCB

analogous

#A6CB4B #66CB4B #4BCB70

triadic

#66CB4B #4B66CB #CB4B66

tetradic

#66CB4B #4BA6CB #B04BCB #CB704B

square

#66CB4B #4BA6CB #B04BCB #CB704B

split-complementary

#66CB4B #704BCB #CB4BA6

monochromatic

#357923 #4AA831 #66CB4B #8ED97A #B7E6AA

Accessibility & contrast

On white

2.06

#66CB4B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.21

#66CB4B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CB4B

10.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CB4B	#FFFFFF	#000000	##000000
##66CB4B	1.00	2.06	10.21	10.21
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.21	21.00	1.00	1.00
##000000	10.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1BA3C

Deuteranopia (green-blind)

#C3B156

Tritanopia (blue-blind)

#5DC5B0

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66cb4b;
/* rgb */ color: rgb(102, 203, 75);
/* oklch */ color: oklch(75.4% 0.191 139.6);

Tailwind

colors: {
  custom: {
    50: '#9adc82',
    500: '#66cb4b',
    950: '#000000',
  },
}

SCSS

$custom: #66cb4b;
$custom-light: #9adc82;
$custom-dark: #000000;

JSON

{
  "hex": "#66cb4b",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 75
  },
  "hsl": {
    "h": 107.344,
    "s": 55.172,
    "l": 54.51
  },
  "oklch": {
    "l": 0.75442,
    "c": 0.19098,
    "h": 139.6
  },
  "luminance": 0.46045
}

Semantic roles & 50–950 ramp

primary

#66CB4B

secondary

#C99ED4

accent

#49DFBF

background

#F9FDF8

surface

#F2FBEF

border

#CCD4CA

text

#0F150B

muted

#7E837C

Preview Lab

Preview with #66CB4B

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

Preview Lab → · Contrast checker → · Palette generator →