#66C535#66C535

#66C535 is a light, vivid yellow-green. Relative luminance 0.430; OKLCH L 73.7% C 0.198 H 137.2°. Best body text is #000000 at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#66C535
RGB	rgb(102, 197, 53)
HSL	hsl(100, 58%, 49%)
HSV	hsv(100, 73%, 77%)
CMYK	cmyk(48.2%, 0%, 73.1%, 22.7%)
CIE-LAB	lab(71.56, -52.49, 59.86)
CIE-LCH	lch(71.56, 79.61, 131.25°)
OKLab	oklab(73.74% -0.1455 0.1348)
OKLCH	oklch(73.74% 0.198 137.2)
XYZ	xyz(26.0875, 43.0125, 10.2951)
Luminance	0.4301 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C535 #9435C5

analogous

#AEC535 #66C535 #35C54C

triadic

#66C535 #3566C5 #C53566

tetradic

#66C535 #35AEC5 #9435C5 #C54C35

square

#66C535 #35AEC5 #9435C5 #C54C35

split-complementary

#66C535 #4C35C5 #C535AE

monochromatic

#34651B #4D9528 #66C535 #89D562 #AEE293

Accessibility & contrast

On white

2.19

#66C535 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.60

#66C535 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C535

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C535	#FFFFFF	#000000	##000000
##66C535	1.00	2.19	9.60	9.60
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.60	21.00	1.00	1.00
##000000	9.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CCB41A

Deuteranopia (green-blind)

#BFAC43

Tritanopia (blue-blind)

#60BEA9

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66c535;
/* rgb */ color: rgb(102, 197, 53);
/* oklch */ color: oklch(73.7% 0.198 137.2);

Tailwind

colors: {
  custom: {
    50: '#9ad776',
    500: '#66c535',
    950: '#000000',
  },
}

SCSS

$custom: #66c535;
$custom-light: #9ad776;
$custom-dark: #000000;

JSON

{
  "hex": "#66c535",
  "rgb": {
    "r": 102,
    "g": 197,
    "b": 53
  },
  "hsl": {
    "h": 99.583,
    "s": 57.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.73737,
    "c": 0.19834,
    "h": 137.2
  },
  "luminance": 0.43014
}

Semantic roles & 50–950 ramp

primary

#66C535

secondary

#B689CD

accent

#47E1AC

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C535

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

Preview Lab → · Contrast checker → · Palette generator →