#66B729#66B729

#66B729 is a light, vivid yellow-green. Relative luminance 0.369; OKLCH L 70.1% C 0.188 H 135.2°. Best body text is #000000 at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#66B729
RGB	rgb(102, 183, 41)
HSL	hsl(94, 63%, 44%)
HSV	hsv(94, 78%, 72%)
CMYK	cmyk(44.3%, 0%, 77.6%, 28.2%)
CIE-LAB	lab(67.16, -47.74, 59.59)
CIE-LCH	lch(67.16, 76.36, 128.70°)
OKLab	oklab(70.1% -0.1335 0.1325)
OKLCH	oklch(70.1% 0.188 135.2)
XYZ	xyz(22.8127, 36.8505, 8.0082)
Luminance	0.3685 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B729 #7A29B7

analogous

#ADB729 #66B729 #29B733

triadic

#66B729 #2966B7 #B72966

tetradic

#66B729 #29ADB7 #7A29B7 #B73329

square

#66B729 #29ADB7 #7A29B7 #B73329

split-complementary

#66B729 #3329B7 #B729AD

monochromatic

#2E5313 #4A851E #66B729 #85D647 #A6E179

Accessibility & contrast

On white

2.51

#66B729 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.37

#66B729 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B729

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B729	#FFFFFF	#000000	##000000
##66B729	1.00	2.51	8.37	8.37
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.37	21.00	1.00	1.00
##000000	8.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEA800

Deuteranopia (green-blind)

#B3A139

Tritanopia (blue-blind)

#64B09C

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #66b729;
/* rgb */ color: rgb(102, 183, 41);
/* oklch */ color: oklch(70.1% 0.188 135.2);

Tailwind

colors: {
  custom: {
    50: '#99cd6e',
    500: '#66b729',
    950: '#000000',
  },
}

SCSS

$custom: #66b729;
$custom-light: #99cd6e;
$custom-dark: #000000;

JSON

{
  "hex": "#66b729",
  "rgb": {
    "r": 102,
    "g": 183,
    "b": 41
  },
  "hsl": {
    "h": 94.225,
    "s": 63.393,
    "l": 43.922
  },
  "oklch": {
    "l": 0.70102,
    "c": 0.18806,
    "h": 135.2
  },
  "luminance": 0.36852
}

Semantic roles & 50–950 ramp

primary

#66B729

secondary

#A473C9

accent

#41E6A0

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1308

muted

#7E827B

Preview Lab

Preview with #66B729

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

Preview Lab → · Contrast checker → · Palette generator →