#66C728#66C728

#66C728 is a light, highly saturated yellow-green. Relative luminance 0.438; OKLCH L 74.2% C 0.207 H 136.5°. Best body text is #000000 at 9.76:1 contrast (WCAG AA passes).

Color values

HEX#66C728
RGBrgb(102, 199, 40)
HSLhsl(97, 67%, 47%)
HSVhsv(97, 80%, 78%)
CMYKcmyk(48.7%, 0%, 79.9%, 22%)
CIE-LABlab(72.11, -54.03, 64.53)
CIE-LCHlch(72.11, 84.16, 129.94°)
OKLaboklab(74.16% -0.1504 0.1427)
OKLCHoklch(74.16% 0.207 136.5)
XYZxyz(26.2852, 43.8230, 9.0807)
Luminance0.4382 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C728 #8928C7
analogous
#B6C728 #66C728 #28C73A
triadic
#66C728 #2866C7 #C72866
tetradic
#66C728 #28B6C7 #8928C7 #C73A28
square
#66C728 #28B6C7 #8928C7 #C73A28
split-complementary
#66C728 #3A28C7 #C728B6
monochromatic
#326114 #4C941E #66C728 #87DC50 #AAE683

Accessibility & contrast

On white

2.15
#66C728 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.76
#66C728 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C728
9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C728#FFFFFF#000000##000000
##66C7281.002.159.769.76
#FFFFFF2.151.0021.0021.00
#0000009.7621.001.001.00
##0000009.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#CEB600
Deuteranopia (green-blind)
#C1AE3B
Tritanopia (blue-blind)
#61C0AA
Achromatopsia (no color)
#B1B1B1

Design tokens & code

CSS
--color: #66c728;
/* rgb */ color: rgb(102, 199, 40);
/* oklch */ color: oklch(74.2% 0.207 136.5);
Tailwind
colors: {
  custom: {
    50: '#9bd970',
    500: '#66c728',
    950: '#000000',
  },
}
SCSS
$custom: #66c728;
$custom-light: #9bd970;
$custom-dark: #000000;
JSON
{
  "hex": "#66c728",
  "rgb": {
    "r": 102,
    "g": 199,
    "b": 40
  },
  "hsl": {
    "h": 96.604,
    "s": 66.527,
    "l": 46.863
  },
  "oklch": {
    "l": 0.74164,
    "c": 0.20735,
    "h": 136.5
  },
  "luminance": 0.43825
}

Semantic roles & 50–950 ramp

primary
#66C728
secondary
#AF7CCF
accent
#3EE9A7
background
#FAFDF7
surface
#F4FAED
border
#CED3C8
text
#0F1508
muted
#7F837B

Preview Lab

Preview with #66C728

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

Preview Lab → · Contrast checker → · Palette generator →

#66C728 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva