#66CC3A#66CC3A

#66CC3A is a light, highly saturated green. Relative luminance 0.463; OKLCH L 75.5% C 0.204 H 138.0°. Best body text is #000000 at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#66CC3A
RGB	rgb(102, 204, 58)
HSL	hsl(102, 59%, 51%)
HSV	hsv(102, 72%, 80%)
CMYK	cmyk(50%, 0%, 71.6%, 20%)
CIE-LAB	lab(73.75, -54.81, 60.27)
CIE-LCH	lch(73.75, 81.47, 132.28°)
OKLab	oklab(75.54% -0.1515 0.1363)
OKLCH	oklch(75.54% 0.204 138)
XYZ	xyz(27.8351, 46.3140, 11.4749)
Luminance	0.4632 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CC3A #A03ACC

analogous

#AFCC3A #66CC3A #3ACC57

triadic

#66CC3A #3A66CC #CC3A66

tetradic

#66CC3A #3AAFCC #A03ACC #CC573A

square

#66CC3A #3AAFCC #A03ACC #CC573A

split-complementary

#66CC3A #573ACC #CC3AAF

monochromatic

#356F1D #4DA029 #66CC3A #8CD96B #B2E59B

Accessibility & contrast

On white

2.05

#66CC3A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.26

#66CC3A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC3A

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CC3A	#FFFFFF	#000000	##000000
##66CC3A	1.00	2.05	10.26	10.26
#FFFFFF	2.05	1.00	21.00	21.00
#000000	10.26	21.00	1.00	1.00
##000000	10.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D2BB21

Deuteranopia (green-blind)

#C5B248

Tritanopia (blue-blind)

#5EC5AF

Achromatopsia (no color)

#B5B5B5

Design tokens & code

CSS

--color: #66cc3a;
/* rgb */ color: rgb(102, 204, 58);
/* oklch */ color: oklch(75.5% 0.204 138.0);

Tailwind

colors: {
  custom: {
    50: '#9bdc79',
    500: '#66cc3a',
    950: '#000000',
  },
}

SCSS

$custom: #66cc3a;
$custom-light: #9bdc79;
$custom-dark: #000000;

JSON

{
  "hex": "#66cc3a",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 58
  },
  "hsl": {
    "h": 101.918,
    "s": 58.871,
    "l": 51.373
  },
  "oklch": {
    "l": 0.75544,
    "c": 0.20377,
    "h": 138
  },
  "luminance": 0.46316
}

Semantic roles & 50–950 ramp

primary

#66CC3A

secondary

#BE91D1

accent

#46E2B3

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F150A

muted

#7F837C

Preview Lab

Preview with #66CC3A

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

Preview Lab → · Contrast checker → · Palette generator →