#66CB3F#66CB3F

#66CB3F is a light, vivid green. Relative luminance 0.459; OKLCH L 75.3% C 0.199 H 138.4°. Best body text is #000000 at 10.18:1 contrast (WCAG AA passes).

Color values

HEX	#66CB3F
RGB	rgb(102, 203, 63)
HSL	hsl(103, 57%, 52%)
HSV	hsv(103, 69%, 80%)
CMYK	cmyk(49.8%, 0%, 69%, 20.4%)
CIE-LAB	lab(73.48, -54.05, 58.12)
CIE-LCH	lch(73.48, 79.37, 132.92°)
OKLab	oklab(75.33% -0.1491 0.1324)
OKLCH	oklch(75.33% 0.199 138.4)
XYZ	xyz(27.7316, 45.8935, 12.0987)
Luminance	0.4590 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CB3F #A43FCB

analogous

#ACCB3F #66CB3F #3FCB5E

triadic

#66CB3F #3F66CB #CB3F66

tetradic

#66CB3F #3FACCB #A43FCB #CB5E3F

square

#66CB3F #3FACCB #A43FCB #CB5E3F

split-complementary

#66CB3F #5E3FCB #CB3FAC

monochromatic

#36711F #4CA12C #66CB3F #8CD86F #B3E59F

Accessibility & contrast

On white

2.06

#66CB3F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.18

#66CB3F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CB3F

10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CB3F	#FFFFFF	#000000	##000000
##66CB3F	1.00	2.06	10.18	10.18
#FFFFFF	2.06	1.00	21.00	21.00
#000000	10.18	21.00	1.00	1.00
##000000	10.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1BA2A

Deuteranopia (green-blind)

#C4B14C

Tritanopia (blue-blind)

#5EC4AF

Achromatopsia (no color)

#B4B4B4

Design tokens & code

CSS

--color: #66cb3f;
/* rgb */ color: rgb(102, 203, 63);
/* oklch */ color: oklch(75.3% 0.199 138.4);

Tailwind

colors: {
  custom: {
    50: '#9adc7b',
    500: '#66cb3f',
    950: '#000000',
  },
}

SCSS

$custom: #66cb3f;
$custom-light: #9adc7b;
$custom-dark: #000000;

JSON

{
  "hex": "#66cb3f",
  "rgb": {
    "r": 102,
    "g": 203,
    "b": 63
  },
  "hsl": {
    "h": 103.286,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.75331,
    "c": 0.19942,
    "h": 138.4
  },
  "luminance": 0.45896
}

Semantic roles & 50–950 ramp

primary

#66CB3F

secondary

#C094D1

accent

#47E1B6

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CB3F

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

Preview Lab → · Contrast checker → · Palette generator →