#66C729#66C729

#66C729 is a light, highly saturated yellow-green. Relative luminance 0.438; OKLCH L 74.2% C 0.207 H 136.6°. Best body text is #000000 at 9.77:1 contrast (WCAG AA passes).

Color values

HEX	#66C729
RGB	rgb(102, 199, 41)
HSL	hsl(97, 66%, 47%)
HSV	hsv(97, 79%, 78%)
CMYK	cmyk(48.7%, 0%, 79.4%, 22%)
CIE-LAB	lab(72.11, -53.98, 64.25)
CIE-LCH	lch(72.11, 83.91, 130.03°)
OKLab	oklab(74.17% -0.1502 0.1422)
OKLCH	oklch(74.17% 0.207 136.6)
XYZ	xyz(26.3024, 43.8299, 9.1714)
Luminance	0.4383 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C729 #8A29C7

analogous

#B5C729 #66C729 #29C73B

triadic

#66C729 #2966C7 #C72966

tetradic

#66C729 #29B5C7 #8A29C7 #C73B29

square

#66C729 #29B5C7 #8A29C7 #C73B29

split-complementary

#66C729 #3B29C7 #C729B5

monochromatic

#326214 #4C941F #66C729 #87DB52 #AAE685

Accessibility & contrast

On white

2.15

#66C729 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.77

#66C729 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C729

9.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C729	#FFFFFF	#000000	##000000
##66C729	1.00	2.15	9.77	9.77
#FFFFFF	2.15	1.00	21.00	21.00
#000000	9.77	21.00	1.00	1.00
##000000	9.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEB600

Deuteranopia (green-blind)

#C1AE3B

Tritanopia (blue-blind)

#61C0AA

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #66c729;
/* rgb */ color: rgb(102, 199, 41);
/* oklch */ color: oklch(74.2% 0.207 136.6);

Tailwind

colors: {
  custom: {
    50: '#9bd970',
    500: '#66c729',
    950: '#000000',
  },
}

SCSS

$custom: #66c729;
$custom-light: #9bd970;
$custom-dark: #000000;

JSON

{
  "hex": "#66c729",
  "rgb": {
    "r": 102,
    "g": 199,
    "b": 41
  },
  "hsl": {
    "h": 96.835,
    "s": 65.833,
    "l": 47.059
  },
  "oklch": {
    "l": 0.74169,
    "c": 0.2069,
    "h": 136.6
  },
  "luminance": 0.43832
}

Semantic roles & 50–950 ramp

primary

#66C729

secondary

#AF7DCF

accent

#3FE9A7

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1508

muted

#7F837B

Preview Lab

Preview with #66C729

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

Preview Lab → · Contrast checker → · Palette generator →