#66B829#66B829

#66B829 is a light, vivid yellow-green. Relative luminance 0.373; OKLCH L 70.4% C 0.189 H 135.3°. Best body text is #000000 at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#66B829
RGB	rgb(102, 184, 41)
HSL	hsl(94, 64%, 44%)
HSV	hsv(94, 78%, 72%)
CMYK	cmyk(44.6%, 0%, 77.7%, 27.8%)
CIE-LAB	lab(67.47, -48.14, 59.89)
CIE-LCH	lch(67.47, 76.84, 128.79°)
OKLab	oklab(70.36% -0.1346 0.1331)
OKLCH	oklch(70.36% 0.189 135.3)
XYZ	xyz(23.0197, 37.2645, 8.0772)
Luminance	0.3727 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B829 #7B29B8

analogous

#AEB829 #66B829 #29B834

triadic

#66B829 #2966B8 #B82966

tetradic

#66B829 #29AEB8 #7B29B8 #B83429

square

#66B829 #29AEB8 #7B29B8 #B83429

split-complementary

#66B829 #3429B8 #B829AE

monochromatic

#2F5413 #4A861E #66B829 #85D648 #A6E17A

Accessibility & contrast

On white

2.48

#66B829 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.45

#66B829 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B829

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B829	#FFFFFF	#000000	##000000
##66B829	1.00	2.48	8.45	8.45
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.45	21.00	1.00	1.00
##000000	8.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA900

Deuteranopia (green-blind)

#B4A239

Tritanopia (blue-blind)

#63B19D

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #66b829;
/* rgb */ color: rgb(102, 184, 41);
/* oklch */ color: oklch(70.4% 0.189 135.3);

Tailwind

colors: {
  custom: {
    50: '#99ce6e',
    500: '#66b829',
    950: '#000000',
  },
}

SCSS

$custom: #66b829;
$custom-light: #99ce6e;
$custom-dark: #000000;

JSON

{
  "hex": "#66b829",
  "rgb": {
    "r": 102,
    "g": 184,
    "b": 41
  },
  "hsl": {
    "h": 94.406,
    "s": 63.556,
    "l": 44.118
  },
  "oklch": {
    "l": 0.70357,
    "c": 0.18927,
    "h": 135.3
  },
  "luminance": 0.37266
}

Semantic roles & 50–950 ramp

primary

#66B829

secondary

#A573C9

accent

#41E7A0

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1308

muted

#7E827B

Preview Lab

Preview with #66B829

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

Preview Lab → · Contrast checker → · Palette generator →