#66AC29#66AC29

#66AC29 is a light, vivid yellow-green. Relative luminance 0.325; OKLCH L 67.3% C 0.175 H 134.0°. Best body text is #000000 at 7.50:1 contrast (WCAG AA passes).

Color values

HEX	#66AC29
RGB	rgb(102, 172, 41)
HSL	hsl(92, 62%, 42%)
HSV	hsv(92, 76%, 67%)
CMYK	cmyk(40.7%, 0%, 76.2%, 32.5%)
CIE-LAB	lab(63.74, -43.23, 56.31)
CIE-LCH	lch(63.74, 70.99, 127.52°)
OKLab	oklab(67.3% -0.1213 0.1256)
OKLCH	oklch(67.3% 0.175 134)
XYZ	xyz(20.6319, 32.4889, 7.2813)
Luminance	0.3249 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AC29 #6F29AC

analogous

#A8AC29 #66AC29 #29AC2E

triadic

#66AC29 #2966AC #AC2966

tetradic

#66AC29 #29A8AC #6F29AC #AC2E29

square

#66AC29 #29A8AC #6F29AC #AC2E29

split-complementary

#66AC29 #2E29AC #AC29A8

monochromatic

#2B4911 #497B1D #66AC29 #84D241 #A4DD72

Accessibility & contrast

On white

2.80

#66AC29 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.50

#66AC29 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AC29

7.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AC29	#FFFFFF	#000000	##000000
##66AC29	1.00	2.80	7.50	7.50
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.50	21.00	1.00	1.00
##000000	7.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B39E0A

Deuteranopia (green-blind)

#A99837

Tritanopia (blue-blind)

#65A593

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #66ac29;
/* rgb */ color: rgb(102, 172, 41);
/* oklch */ color: oklch(67.3% 0.175 134.0);

Tailwind

colors: {
  custom: {
    50: '#98c56d',
    500: '#66ac29',
    950: '#000000',
  },
}

SCSS

$custom: #66ac29;
$custom-light: #98c56d;
$custom-dark: #000000;

JSON

{
  "hex": "#66ac29",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 41
  },
  "hsl": {
    "h": 92.061,
    "s": 61.502,
    "l": 41.765
  },
  "oklch": {
    "l": 0.67299,
    "c": 0.17465,
    "h": 134
  },
  "luminance": 0.3249
}

Semantic roles & 50–950 ramp

primary

#66AC29

secondary

#9B6CC5

accent

#43E599

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66AC29

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

Preview Lab → · Contrast checker → · Palette generator →