#66C436#66C436

#66C436 is a light, vivid yellow-green. Relative luminance 0.426; OKLCH L 73.5% C 0.197 H 137.2°. Best body text is #000000 at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#66C436
RGB	rgb(102, 196, 54)
HSL	hsl(100, 57%, 49%)
HSV	hsv(100, 72%, 77%)
CMYK	cmyk(48%, 0%, 72.4%, 23.1%)
CIE-LAB	lab(71.26, -52.03, 59.20)
CIE-LCH	lch(71.26, 78.82, 131.31°)
OKLab	oklab(73.49% -0.1442 0.1335)
OKLCH	oklch(73.49% 0.197 137.2)
XYZ	xyz(25.8845, 42.5692, 10.3420)
Luminance	0.4257 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C436 #9436C4

analogous

#ADC436 #66C436 #36C44D

triadic

#66C436 #3666C4 #C43666

tetradic

#66C436 #36ADC4 #9436C4 #C44D36

square

#66C436 #36ADC4 #9436C4 #C44D36

split-complementary

#66C436 #4D36C4 #C436AD

monochromatic

#34641C #4D9429 #66C436 #89D463 #AEE193

Accessibility & contrast

On white

2.21

#66C436 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.51

#66C436 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C436

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C436	#FFFFFF	#000000	##000000
##66C436	1.00	2.21	9.51	9.51
#FFFFFF	2.21	1.00	21.00	21.00
#000000	9.51	21.00	1.00	1.00
##000000	9.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CAB31C

Deuteranopia (green-blind)

#BEAC44

Tritanopia (blue-blind)

#60BDA8

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66c436;
/* rgb */ color: rgb(102, 196, 54);
/* oklch */ color: oklch(73.5% 0.197 137.2);

Tailwind

colors: {
  custom: {
    50: '#9ad676',
    500: '#66c436',
    950: '#000000',
  },
}

SCSS

$custom: #66c436;
$custom-light: #9ad676;
$custom-dark: #000000;

JSON

{
  "hex": "#66c436",
  "rgb": {
    "r": 102,
    "g": 196,
    "b": 54
  },
  "hsl": {
    "h": 99.718,
    "s": 56.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.73491,
    "c": 0.19654,
    "h": 137.2
  },
  "luminance": 0.42571
}

Semantic roles & 50–950 ramp

primary

#66C436

secondary

#B689CC

accent

#48E0AD

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C436

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

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