#66C138#66C138

#66C138 is a light, vivid yellow-green. Relative luminance 0.412; OKLCH L 72.7% C 0.192 H 137.2°. Best body text is #000000 at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#66C138
RGB	rgb(102, 193, 56)
HSL	hsl(100, 55%, 49%)
HSV	hsv(100, 71%, 76%)
CMYK	cmyk(47.2%, 0%, 71%, 24.3%)
CIE-LAB	lab(70.35, -50.72, 57.54)
CIE-LCH	lch(70.35, 76.70, 131.40°)
OKLab	oklab(72.75% -0.1405 0.1303)
OKLCH	oklch(72.75% 0.192 137.2)
XYZ	xyz(25.2625, 41.2486, 10.3712)
Luminance	0.4125 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C138 #9338C1

analogous

#ABC138 #66C138 #38C14F

triadic

#66C138 #3866C1 #C13866

tetradic

#66C138 #38ABC1 #9338C1 #C14F38

square

#66C138 #38ABC1 #9338C1 #C14F38

split-complementary

#66C138 #4F38C1 #C138AB

monochromatic

#34621C #4D922A #66C138 #89D264 #ADE094

Accessibility & contrast

On white

2.27

#66C138 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.25

#66C138 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C138

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C138	#FFFFFF	#000000	##000000
##66C138	1.00	2.27	9.25	9.25
#FFFFFF	2.27	1.00	21.00	21.00
#000000	9.25	21.00	1.00	1.00
##000000	9.25	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7B121

Deuteranopia (green-blind)

#BBA945

Tritanopia (blue-blind)

#61BAA6

Achromatopsia (no color)

#ACACAC

Design tokens & code

CSS

--color: #66c138;
/* rgb */ color: rgb(102, 193, 56);
/* oklch */ color: oklch(72.7% 0.192 137.2);

Tailwind

colors: {
  custom: {
    50: '#99d477',
    500: '#66c138',
    950: '#000000',
  },
}

SCSS

$custom: #66c138;
$custom-light: #99d477;
$custom-dark: #000000;

JSON

{
  "hex": "#66c138",
  "rgb": {
    "r": 102,
    "g": 193,
    "b": 56
  },
  "hsl": {
    "h": 99.854,
    "s": 55.02,
    "l": 48.824
  },
  "oklch": {
    "l": 0.72746,
    "c": 0.19167,
    "h": 137.2
  },
  "luminance": 0.4125
}

Semantic roles & 50–950 ramp

primary

#66C138

secondary

#B58ACB

accent

#49DEAC

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C138

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

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