#66AC25#66AC25

#66AC25 is a light, vivid yellow-green. Relative luminance 0.325; OKLCH L 67.3% C 0.177 H 133.7°. Best body text is #000000 at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#66AC25
RGB	rgb(102, 172, 37)
HSL	hsl(91, 65%, 41%)
HSV	hsv(91, 78%, 67%)
CMYK	cmyk(40.7%, 0%, 78.5%, 32.5%)
CIE-LAB	lab(63.72, -43.46, 57.59)
CIE-LCH	lch(63.72, 72.15, 127.04°)
OKLab	oklab(67.27% -0.1222 0.1277)
OKLCH	oklch(67.27% 0.177 133.7)
XYZ	xyz(20.5656, 32.4624, 6.9321)
Luminance	0.3246 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AC25 #6B25AC

analogous

#A9AC25 #66AC25 #25AC27

triadic

#66AC25 #2566AC #AC2566

tetradic

#66AC25 #25A9AC #6B25AC #AC2725

square

#66AC25 #25A9AC #6B25AC #AC2725

split-complementary

#66AC25 #2725AC #AC25A9

monochromatic

#2A470F #487A1A #66AC25 #84D53A #A4DF6C

Accessibility & contrast

On white

2.80

#66AC25 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.49

#66AC25 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AC25

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AC25	#FFFFFF	#000000	##000000
##66AC25	1.00	2.80	7.49	7.49
#FFFFFF	2.80	1.00	21.00	21.00
#000000	7.49	21.00	1.00	1.00
##000000	7.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B39E00

Deuteranopia (green-blind)

#AA9834

Tritanopia (blue-blind)

#66A593

Achromatopsia (no color)

#9A9A9A

Design tokens & code

CSS

--color: #66ac25;
/* rgb */ color: rgb(102, 172, 37);
/* oklch */ color: oklch(67.3% 0.177 133.7);

Tailwind

colors: {
  custom: {
    50: '#98c56b',
    500: '#66ac25',
    950: '#000000',
  },
}

SCSS

$custom: #66ac25;
$custom-light: #98c56b;
$custom-dark: #000000;

JSON

{
  "hex": "#66ac25",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 37
  },
  "hsl": {
    "h": 91.111,
    "s": 64.593,
    "l": 40.98
  },
  "oklch": {
    "l": 0.67274,
    "c": 0.17676,
    "h": 133.7
  },
  "luminance": 0.32463
}

Semantic roles & 50–950 ramp

primary

#66AC25

secondary

#9867C6

accent

#40E897

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66AC25

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

Preview Lab → · Contrast checker → · Palette generator →