#66C548#66C548

#66C548 is a light, vivid green. Relative luminance 0.432; OKLCH L 73.9% C 0.186 H 139.0°. Best body text is #000000 at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#66C548
RGB	rgb(102, 197, 72)
HSL	hsl(106, 52%, 53%)
HSV	hsv(106, 63%, 77%)
CMYK	cmyk(48.2%, 0%, 63.5%, 22.7%)
CIE-LAB	lab(71.71, -50.93, 52.56)
CIE-LCH	lch(71.71, 73.19, 134.10°)
OKLab	oklab(73.9% -0.1401 0.1218)
OKLCH	oklch(73.9% 0.186 139)
XYZ	xyz(26.6145, 43.2233, 13.0701)
Luminance	0.4323 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C548 #A748C5

analogous

#A4C548 #66C548 #48C568

triadic

#66C548 #4866C5 #C54866

tetradic

#66C548 #48A4C5 #A748C5 #C56848

square

#66C548 #48A4C5 #A748C5 #C56848

split-complementary

#66C548 #6848C5 #C548A4

monochromatic

#366F23 #4C9E32 #66C548 #8DD476 #B4E2A5

Accessibility & contrast

On white

2.18

#66C548 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.65

#66C548 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C548

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C548	#FFFFFF	#000000	##000000
##66C548	1.00	2.18	9.65	9.65
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.65	21.00	1.00	1.00
##000000	9.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBB539

Deuteranopia (green-blind)

#BEAD52

Tritanopia (blue-blind)

#5EBFAB

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66c548;
/* rgb */ color: rgb(102, 197, 72);
/* oklch */ color: oklch(73.9% 0.186 139.0);

Tailwind

colors: {
  custom: {
    50: '#99d780',
    500: '#66c548',
    950: '#000000',
  },
}

SCSS

$custom: #66c548;
$custom-light: #99d780;
$custom-dark: #000000;

JSON

{
  "hex": "#66c548",
  "rgb": {
    "r": 102,
    "g": 197,
    "b": 72
  },
  "hsl": {
    "h": 105.6,
    "s": 51.867,
    "l": 52.745
  },
  "oklch": {
    "l": 0.739,
    "c": 0.18561,
    "h": 139
  },
  "luminance": 0.43225
}

Semantic roles & 50–950 ramp

primary

#66C548

secondary

#C299CF

accent

#4CDBB9

background

#F9FDF8

surface

#F2FAEF

border

#CCD3CA

text

#0F140A

muted

#7E837C

Preview Lab

Preview with #66C548

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

Preview Lab → · Contrast checker → · Palette generator →