#66C433#66C433

#66C433 is a light, vivid yellow-green. Relative luminance 0.425; OKLCH L 73.5% C 0.198 H 137.0°. Best body text is #000000 at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#66C433
RGB	rgb(102, 196, 51)
HSL	hsl(99, 59%, 48%)
HSV	hsv(99, 74%, 77%)
CMYK	cmyk(48%, 0%, 74%, 23.1%)
CIE-LAB	lab(71.24, -52.24, 60.24)
CIE-LCH	lch(71.24, 79.73, 130.93°)
OKLab	oklab(73.47% -0.145 0.1353)
OKLCH	oklch(73.47% 0.198 137)
XYZ	xyz(25.8162, 42.5419, 9.9824)
Luminance	0.4254 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C433 #9133C4

analogous

#AEC433 #66C433 #33C449

triadic

#66C433 #3366C4 #C43366

tetradic

#66C433 #33AEC4 #9133C4 #C44933

square

#66C433 #33AEC4 #9133C4 #C44933

split-complementary

#66C433 #4933C4 #C433AE

monochromatic

#33631A #4D9326 #66C433 #89D55F #ACE28F

Accessibility & contrast

On white

2.21

#66C433 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.51

#66C433 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C433

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C433	#FFFFFF	#000000	##000000
##66C433	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)

#CBB315

Deuteranopia (green-blind)

#BEAC42

Tritanopia (blue-blind)

#61BDA8

Achromatopsia (no color)

#AEAEAE

Design tokens & code

CSS

--color: #66c433;
/* rgb */ color: rgb(102, 196, 51);
/* oklch */ color: oklch(73.5% 0.198 137.0);

Tailwind

colors: {
  custom: {
    50: '#9ad674',
    500: '#66c433',
    950: '#000000',
  },
}

SCSS

$custom: #66c433;
$custom-light: #9ad674;
$custom-dark: #000000;

JSON

{
  "hex": "#66c433",
  "rgb": {
    "r": 102,
    "g": 196,
    "b": 51
  },
  "hsl": {
    "h": 98.897,
    "s": 58.704,
    "l": 48.431
  },
  "oklch": {
    "l": 0.7347,
    "c": 0.19829,
    "h": 137
  },
  "luminance": 0.42544
}

Semantic roles & 50–950 ramp

primary

#66C433

secondary

#B486CD

accent

#46E2AB

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C433

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

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