#66C534#66C534

#66C534 is a light, vivid yellow-green. Relative luminance 0.430; OKLCH L 73.7% C 0.199 H 137.1°. Best body text is #000000 at 9.60:1 contrast (WCAG AA passes).

Color values

HEX#66C534
RGBrgb(102, 197, 52)
HSLhsl(99, 58%, 49%)
HSVhsv(99, 74%, 77%)
CMYKcmyk(48.2%, 0%, 73.6%, 22.7%)
CIE-LABlab(71.56, -52.56, 60.20)
CIE-LCHlch(71.56, 79.92, 131.12°)
OKLaboklab(73.73% -0.1458 0.1353)
OKLCHoklch(73.73% 0.199 137.1)
XYZxyz(26.0648, 43.0034, 10.1752)
Luminance0.4300 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C534 #9334C5
analogous
#AFC534 #66C534 #34C54A
triadic
#66C534 #3466C5 #C53466
tetradic
#66C534 #34AFC5 #9334C5 #C54A34
square
#66C534 #34AFC5 #9334C5 #C54A34
split-complementary
#66C534 #4A34C5 #C534AF
monochromatic
#34641A #4D9527 #66C534 #89D561 #ADE291

Accessibility & contrast

On white

2.19
#66C534 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.60
#66C534 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C534
9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C534#FFFFFF#000000##000000
##66C5341.002.199.609.60
#FFFFFF2.191.0021.0021.00
#0000009.6021.001.001.00
##0000009.6021.001.001.00

Color blindness preview

Protanopia (red-blind)
#CCB417
Deuteranopia (green-blind)
#BFAC43
Tritanopia (blue-blind)
#60BEA9
Achromatopsia (no color)
#AFAFAF

Design tokens & code

CSS
--color: #66c534;
/* rgb */ color: rgb(102, 197, 52);
/* oklch */ color: oklch(73.7% 0.199 137.1);
Tailwind
colors: {
  custom: {
    50: '#9ad775',
    500: '#66c534',
    950: '#000000',
  },
}
SCSS
$custom: #66c534;
$custom-light: #9ad775;
$custom-dark: #000000;
JSON
{
  "hex": "#66c534",
  "rgb": {
    "r": 102,
    "g": 197,
    "b": 52
  },
  "hsl": {
    "h": 99.31,
    "s": 58.233,
    "l": 48.824
  },
  "oklch": {
    "l": 0.7373,
    "c": 0.19891,
    "h": 137.1
  },
  "luminance": 0.43005
}

Semantic roles & 50–950 ramp

primary
#66C534
secondary
#B588CD
accent
#46E1AC
background
#FAFDF7
surface
#F3FAED
border
#CDD3C8
text
#0F1409
muted
#7F837B

Preview Lab

Preview with #66C534

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

Preview Lab → · Contrast checker → · Palette generator →

#66C534 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva