#66CA28#66CA28

#66CA28 is a light, highly saturated yellow-green. Relative luminance 0.452; OKLCH L 74.9% C 0.211 H 136.7°. Best body text is #000000 at 10.04:1 contrast (WCAG AA passes).

Color values

HEX#66CA28
RGBrgb(102, 202, 40)
HSLhsl(97, 67%, 47%)
HSVhsv(97, 80%, 79%)
CMYKcmyk(49.5%, 0%, 80.2%, 20.8%)
CIE-LABlab(73.03, -55.16, 65.39)
CIE-LCHlch(73.03, 85.55, 130.15°)
OKLaboklab(74.93% -0.1535 0.1445)
OKLCHoklch(74.93% 0.211 136.7)
XYZxyz(26.9822, 45.2171, 9.3130)
Luminance0.4522 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66CA28 #8C28CA
analogous
#B7CA28 #66CA28 #28CA3B
triadic
#66CA28 #2866CA #CA2866
tetradic
#66CA28 #28B7CA #8C28CA #CA3B28
square
#66CA28 #28B7CA #8C28CA #CA3B28
split-complementary
#66CA28 #3B28CA #CA28B7
monochromatic
#326414 #4C971E #66CA28 #87DD52 #ABE785

Accessibility & contrast

On white

2.09
#66CA28 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.04
#66CA28 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CA28
10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66CA28#FFFFFF#000000##000000
##66CA281.002.0910.0410.04
#FFFFFF2.091.0021.0021.00
#00000010.0421.001.001.00
##00000010.0421.001.001.00

Color blindness preview

Protanopia (red-blind)
#D1B800
Deuteranopia (green-blind)
#C4B03B
Tritanopia (blue-blind)
#60C2AD
Achromatopsia (no color)
#B3B3B3

Design tokens & code

CSS
--color: #66ca28;
/* rgb */ color: rgb(102, 202, 40);
/* oklch */ color: oklch(74.9% 0.211 136.7);
Tailwind
colors: {
  custom: {
    50: '#9bdb70',
    500: '#66ca28',
    950: '#000000',
  },
}
SCSS
$custom: #66ca28;
$custom-light: #9bdb70;
$custom-dark: #000000;
JSON
{
  "hex": "#66ca28",
  "rgb": {
    "r": 102,
    "g": 202,
    "b": 40
  },
  "hsl": {
    "h": 97.037,
    "s": 66.942,
    "l": 47.451
  },
  "oklch": {
    "l": 0.74925,
    "c": 0.21078,
    "h": 136.7
  },
  "luminance": 0.45219
}

Semantic roles & 50–950 ramp

primary
#66CA28
secondary
#B17ED0
accent
#3EEAA8
background
#FAFDF7
surface
#F4FBED
border
#CED4C8
text
#0F1508
muted
#7F837B

Preview Lab

Preview with #66CA28

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

Preview Lab → · Contrast checker → · Palette generator →

#66CA28 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva