#66CE2D#66CE2D

#66CE2D is a light, highly saturated yellow-green. Relative luminance 0.472; OKLCH L 76.0% C 0.213 H 137.3°. Best body text is #000000 at 10.43:1 contrast (WCAG AA passes).

Color values

HEX#66CE2D
RGBrgb(102, 206, 45)
HSLhsl(99, 64%, 49%)
HSVhsv(99, 78%, 81%)
CMYKcmyk(50.5%, 0%, 78.2%, 19.2%)
CIE-LABlab(74.29, -56.39, 65.11)
CIE-LCHlch(74.29, 86.14, 130.89°)
OKLaboklab(75.97% -0.1565 0.1446)
OKLCHoklch(75.97% 0.213 137.3)
XYZxyz(28.0236, 47.1548, 10.1072)
Luminance0.4716 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66CE2D #952DCE
analogous
#B7CE2D #66CE2D #2DCE45
triadic
#66CE2D #2D66CE #CE2D66
tetradic
#66CE2D #2DB7CE #952DCE #CE452D
square
#66CE2D #2DB7CE #952DCE #CE452D
split-complementary
#66CE2D #452DCE #CE2DB7
monochromatic
#346A17 #4D9C22 #66CE2D #8ADC5D #AEE78F

Accessibility & contrast

On white

2.01
#66CE2D on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.43
#66CE2D on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CE2D
10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66CE2D#FFFFFF#000000##000000
##66CE2D1.002.0110.4310.43
#FFFFFF2.011.0021.0021.00
#00000010.4321.001.001.00
##00000010.4321.001.001.00

Color blindness preview

Protanopia (red-blind)
#D5BC00
Deuteranopia (green-blind)
#C7B33F
Tritanopia (blue-blind)
#5FC7B0
Achromatopsia (no color)
#B7B7B7

Design tokens & code

CSS
--color: #66ce2d;
/* rgb */ color: rgb(102, 206, 45);
/* oklch */ color: oklch(76.0% 0.213 137.3);
Tailwind
colors: {
  custom: {
    50: '#9bde73',
    500: '#66ce2d',
    950: '#000000',
  },
}
SCSS
$custom: #66ce2d;
$custom-light: #9bde73;
$custom-dark: #000000;
JSON
{
  "hex": "#66ce2d",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 45
  },
  "hsl": {
    "h": 98.758,
    "s": 64.143,
    "l": 49.216
  },
  "oklch": {
    "l": 0.75965,
    "c": 0.2131,
    "h": 137.3
  },
  "luminance": 0.47157
}

Semantic roles & 50–950 ramp

primary
#66CE2D
secondary
#B686D1
accent
#41E7AC
background
#FAFDF7
surface
#F4FBED
border
#CED4C8
text
#0F1509
muted
#7F837B

Preview Lab

Preview with #66CE2D

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

Preview Lab → · Contrast checker → · Palette generator →

#66CE2D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva