#66BC29#66BC29

#66BC29 is a light, vivid yellow-green. Relative luminance 0.390; OKLCH L 71.4% C 0.194 H 135.7°. Best body text is #000000 at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#66BC29
RGB	rgb(102, 188, 41)
HSL	hsl(95, 64%, 45%)
HSV	hsv(95, 78%, 74%)
CMYK	cmyk(45.7%, 0%, 78.2%, 26.3%)
CIE-LAB	lab(68.71, -49.73, 61.06)
CIE-LCH	lch(68.71, 78.75, 129.16°)
OKLab	oklab(71.38% -0.1388 0.1356)
OKLCH	oklch(71.38% 0.194 135.7)
XYZ	xyz(23.8624, 38.9498, 8.3581)
Luminance	0.3895 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC29 #7F29BC

analogous

#B0BC29 #66BC29 #29BC36

triadic

#66BC29 #2966BC #BC2966

tetradic

#66BC29 #29B0BC #7F29BC #BC3629

square

#66BC29 #29B0BC #7F29BC #BC3629

split-complementary

#66BC29 #3629BC #BC29B0

monochromatic

#2F5813 #4B8A1E #66BC29 #85D84B #A7E37D

Accessibility & contrast

On white

2.39

#66BC29 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.79

#66BC29 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC29

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC29	#FFFFFF	#000000	##000000
##66BC29	1.00	2.39	8.79	8.79
#FFFFFF	2.39	1.00	21.00	21.00
#000000	8.79	21.00	1.00	1.00
##000000	8.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3AC00

Deuteranopia (green-blind)

#B8A539

Tritanopia (blue-blind)

#63B5A1

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc29;
/* rgb */ color: rgb(102, 188, 41);
/* oklch */ color: oklch(71.4% 0.194 135.7);

Tailwind

colors: {
  custom: {
    50: '#99d16f',
    500: '#66bc29',
    950: '#000000',
  },
}

SCSS

$custom: #66bc29;
$custom-light: #99d16f;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc29",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 41
  },
  "hsl": {
    "h": 95.102,
    "s": 64.192,
    "l": 44.902
  },
  "oklch": {
    "l": 0.71375,
    "c": 0.19404,
    "h": 135.7
  },
  "luminance": 0.38951
}

Semantic roles & 50–950 ramp

primary

#66BC29

secondary

#A876CB

accent

#41E7A2

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1408

muted

#7E827B

Preview Lab

Preview with #66BC29

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

Preview Lab → · Contrast checker → · Palette generator →