#66BC34#66BC34

#66BC34 is a light, vivid yellow-green. Relative luminance 0.390; OKLCH L 71.4% C 0.188 H 136.5°. Best body text is #000000 at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#66BC34
RGB	rgb(102, 188, 52)
HSL	hsl(98, 57%, 47%)
HSV	hsv(98, 72%, 74%)
CMYK	cmyk(45.7%, 0%, 72.3%, 26.3%)
CIE-LAB	lab(68.78, -49.04, 57.42)
CIE-LCH	lch(68.78, 75.51, 130.50°)
OKLab	oklab(71.45% -0.1363 0.1295)
OKLCH	oklch(71.45% 0.188 136.5)
XYZ	xyz(24.0819, 39.0376, 9.5142)
Luminance	0.3904 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BC34 #8A34BC

analogous

#AABC34 #66BC34 #34BC46

triadic

#66BC34 #3466BC #BC3466

tetradic

#66BC34 #34AABC #8A34BC #BC4634

square

#66BC34 #34AABC #8A34BC #BC4634

split-complementary

#66BC34 #4634BC #BC34AA

monochromatic

#325C19 #4C8C27 #66BC34 #87D25B #AADF8B

Accessibility & contrast

On white

2.38

#66BC34 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.81

#66BC34 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BC34

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BC34	#FFFFFF	#000000	##000000
##66BC34	1.00	2.38	8.81	8.81
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.81	21.00	1.00	1.00
##000000	8.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AC1C

Deuteranopia (green-blind)

#B7A541

Tritanopia (blue-blind)

#62B5A1

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #66bc34;
/* rgb */ color: rgb(102, 188, 52);
/* oklch */ color: oklch(71.4% 0.188 136.5);

Tailwind

colors: {
  custom: {
    50: '#99d174',
    500: '#66bc34',
    950: '#000000',
  },
}

SCSS

$custom: #66bc34;
$custom-light: #99d174;
$custom-dark: #000000;

JSON

{
  "hex": "#66bc34",
  "rgb": {
    "r": 102,
    "g": 188,
    "b": 52
  },
  "hsl": {
    "h": 97.941,
    "s": 56.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.71447,
    "c": 0.188,
    "h": 136.5
  },
  "luminance": 0.39039
}

Semantic roles & 50–950 ramp

primary

#66BC34

secondary

#AF83C9

accent

#48E0A8

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0F1409

muted

#7E827B

Preview Lab

Preview with #66BC34

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

Preview Lab → · Contrast checker → · Palette generator →