#66C53B#66C53B

#66C53B is a light, vivid green. Relative luminance 0.431; OKLCH L 73.8% C 0.195 H 137.7°. Best body text is #000000 at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#66C53B
RGB	rgb(102, 197, 59)
HSL	hsl(101, 54%, 50%)
HSV	hsv(101, 70%, 77%)
CMYK	cmyk(48.2%, 0%, 70.1%, 22.7%)
CIE-LAB	lab(71.60, -52.05, 57.70)
CIE-LCH	lch(71.60, 77.71, 132.05°)
OKLab	oklab(73.78% -0.144 0.1311)
OKLCH	oklch(73.78% 0.195 137.7)
XYZ	xyz(26.2343, 43.0712, 11.0680)
Luminance	0.4307 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C53B #9A3BC5

analogous

#ABC53B #66C53B #3BC555

triadic

#66C53B #3B66C5 #C53B66

tetradic

#66C53B #3BABC5 #9A3BC5 #C5553B

square

#66C53B #3BABC5 #9A3BC5 #C5553B

split-complementary

#66C53B #553BC5 #C53BAB

monochromatic

#35671F #4D962C #66C53B #8BD36A #B0E199

Accessibility & contrast

On white

2.18

#66C53B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.61

#66C53B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C53B

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C53B	#FFFFFF	#000000	##000000
##66C53B	1.00	2.18	9.61	9.61
#FFFFFF	2.18	1.00	21.00	21.00
#000000	9.61	21.00	1.00	1.00
##000000	9.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBB425

Deuteranopia (green-blind)

#BFAC48

Tritanopia (blue-blind)

#60BEAA

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66c53b;
/* rgb */ color: rgb(102, 197, 59);
/* oklch */ color: oklch(73.8% 0.195 137.7);

Tailwind

colors: {
  custom: {
    50: '#9ad779',
    500: '#66c53b',
    950: '#000000',
  },
}

SCSS

$custom: #66c53b;
$custom-light: #9ad779;
$custom-dark: #000000;

JSON

{
  "hex": "#66c53b",
  "rgb": {
    "r": 102,
    "g": 197,
    "b": 59
  },
  "hsl": {
    "h": 101.304,
    "s": 54.331,
    "l": 50.196
  },
  "oklch": {
    "l": 0.73782,
    "c": 0.19468,
    "h": 137.7
  },
  "luminance": 0.43073
}

Semantic roles & 50–950 ramp

primary

#66C53B

secondary

#BA8FCD

accent

#4ADEB0

background

#F9FDF7

surface

#F2FAEE

border

#CCD3C9

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C53B

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

Preview Lab → · Contrast checker → · Palette generator →