#66C236#66C236

#66C236 is a light, vivid yellow-green. Relative luminance 0.417; OKLCH L 73.0% C 0.194 H 137.1°. Best body text is #000000 at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#66C236
RGB	rgb(102, 194, 54)
HSL	hsl(99, 56%, 49%)
HSV	hsv(99, 72%, 76%)
CMYK	cmyk(47.4%, 0%, 72.2%, 23.9%)
CIE-LAB	lab(70.64, -51.26, 58.58)
CIE-LCH	lch(70.64, 77.84, 131.19°)
OKLab	oklab(72.98% -0.1421 0.1322)
OKLCH	oklch(72.98% 0.194 137.1)
XYZ	xyz(25.4364, 41.6730, 10.1927)
Luminance	0.4168 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C236 #9236C2

analogous

#ACC236 #66C236 #36C24C

triadic

#66C236 #3666C2 #C23666

tetradic

#66C236 #36ACC2 #9236C2 #C24C36

square

#66C236 #36ACC2 #9236C2 #C24C36

split-complementary

#66C236 #4C36C2 #C236AC

monochromatic

#34621B #4D9229 #66C236 #89D362 #ADE192

Accessibility & contrast

On white

2.25

#66C236 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.33

#66C236 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C236

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C236	#FFFFFF	#000000	##000000
##66C236	1.00	2.25	9.33	9.33
#FFFFFF	2.25	1.00	21.00	21.00
#000000	9.33	21.00	1.00	1.00
##000000	9.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8B21D

Deuteranopia (green-blind)

#BCAA44

Tritanopia (blue-blind)

#61BBA7

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #66c236;
/* rgb */ color: rgb(102, 194, 54);
/* oklch */ color: oklch(73.0% 0.194 137.1);

Tailwind

colors: {
  custom: {
    50: '#99d576',
    500: '#66c236',
    950: '#000000',
  },
}

SCSS

$custom: #66c236;
$custom-light: #99d576;
$custom-dark: #000000;

JSON

{
  "hex": "#66c236",
  "rgb": {
    "r": 102,
    "g": 194,
    "b": 54
  },
  "hsl": {
    "h": 99.429,
    "s": 56.452,
    "l": 48.627
  },
  "oklch": {
    "l": 0.72984,
    "c": 0.19412,
    "h": 137.1
  },
  "luminance": 0.41675
}

Semantic roles & 50–950 ramp

primary

#66C236

secondary

#B488CC

accent

#48E0AC

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C236

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

Preview Lab → · Contrast checker → · Palette generator →