#66C034#66C034

#66C034 is a light, vivid yellow-green. Relative luminance 0.408; OKLCH L 72.5% C 0.193 H 136.8°. Best body text is #000000 at 9.15:1 contrast (WCAG AA passes).

Color values

HEX	#66C034
RGB	rgb(102, 192, 52)
HSL	hsl(99, 57%, 48%)
HSV	hsv(99, 73%, 75%)
CMYK	cmyk(46.9%, 0%, 72.9%, 24.7%)
CIE-LAB	lab(70.01, -50.62, 58.66)
CIE-LCH	lch(70.01, 77.48, 130.79°)
OKLab	oklab(72.46% -0.1405 0.1321)
OKLCH	oklch(72.46% 0.193 136.8)
XYZ	xyz(24.9482, 40.7704, 9.8030)
Luminance	0.4077 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C034 #8E34C0

analogous

#ACC034 #66C034 #34C048

triadic

#66C034 #3466C0 #C03466

tetradic

#66C034 #34ACC0 #8E34C0 #C04834

square

#66C034 #34ACC0 #8E34C0 #C04834

split-complementary

#66C034 #4834C0 #C034AC

monochromatic

#33601A #4C9027 #66C034 #88D35E #ABE08E

Accessibility & contrast

On white

2.29

#66C034 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.15

#66C034 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C034

9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C034	#FFFFFF	#000000	##000000
##66C034	1.00	2.29	9.15	9.15
#FFFFFF	2.29	1.00	21.00	21.00
#000000	9.15	21.00	1.00	1.00
##000000	9.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7B01A

Deuteranopia (green-blind)

#BBA842

Tritanopia (blue-blind)

#61B9A5

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #66c034;
/* rgb */ color: rgb(102, 192, 52);
/* oklch */ color: oklch(72.5% 0.193 136.8);

Tailwind

colors: {
  custom: {
    50: '#99d474',
    500: '#66c034',
    950: '#000000',
  },
}

SCSS

$custom: #66c034;
$custom-light: #99d474;
$custom-dark: #000000;

JSON

{
  "hex": "#66c034",
  "rgb": {
    "r": 102,
    "g": 192,
    "b": 52
  },
  "hsl": {
    "h": 98.571,
    "s": 57.377,
    "l": 47.843
  },
  "oklch": {
    "l": 0.72462,
    "c": 0.19288,
    "h": 136.8
  },
  "luminance": 0.40772
}

Semantic roles & 50–950 ramp

primary

#66C034

secondary

#B285CB

accent

#47E1AA

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1409

muted

#7E837B

Preview Lab

Preview with #66C034

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

Preview Lab → · Contrast checker → · Palette generator →