#66E73B#66E73B

#66E73B is a very light, highly saturated green. Relative luminance 0.603; OKLCH L 82.3% C 0.234 H 139.3°. Best body text is #000000 at 13.06:1 contrast (WCAG AA passes).

Color values

HEX#66E73B
RGBrgb(102, 231, 59)
HSLhsl(105, 78%, 57%)
HSVhsv(105, 74%, 91%)
CMYKcmyk(55.8%, 0%, 74.5%, 9.4%)
CIE-LABlab(82.00, -64.55, 68.16)
CIE-LCHlch(82.00, 93.87, 133.44°)
OKLaboklab(82.34% -0.1777 0.1529)
OKLCHoklch(82.34% 0.234 139.3)
XYZxyz(34.8434, 60.2894, 13.9377)
Luminance0.6029 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E73B #BC3BE7
analogous
#BCE73B #66E73B #3BE766
triadic
#66E73B #3B66E7 #E73B66
tetradic
#66E73B #3BBCE7 #BC3BE7 #E7663B
square
#66E73B #3BBCE7 #BC3BE7 #E7663B
split-complementary
#66E73B #663BE7 #E73BBC
monochromatic
#339512 #46CC19 #66E73B #91EE72 #BBF4A8

Accessibility & contrast

On white

1.61
#66E73B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

13.06
#66E73B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E73B
13.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E73B#FFFFFF#000000##000000
##66E73B1.001.6113.0613.06
#FFFFFF1.611.0021.0021.00
#00000013.0621.001.001.00
##00000013.0621.001.001.00

Color blindness preview

Protanopia (red-blind)
#EED214
Deuteranopia (green-blind)
#DDC84D
Tritanopia (blue-blind)
#58DFC6
Achromatopsia (no color)
#CCCCCC

Design tokens & code

CSS
--color: #66e73b;
/* rgb */ color: rgb(102, 231, 59);
/* oklch */ color: oklch(82.3% 0.234 139.3);
Tailwind
colors: {
  custom: {
    50: '#9ef07c',
    500: '#66e73b',
    950: '#000000',
  },
}
SCSS
$custom: #66e73b;
$custom-light: #9ef07c;
$custom-dark: #000000;
JSON
{
  "hex": "#66e73b",
  "rgb": {
    "r": 102,
    "g": 231,
    "b": 59
  },
  "hsl": {
    "h": 105,
    "s": 78.182,
    "l": 56.863
  },
  "oklch": {
    "l": 0.82343,
    "c": 0.23442,
    "h": 139.3
  },
  "luminance": 0.60292
}

Semantic roles & 50–950 ramp

primary
#66E73B
secondary
#7E2D99
accent
#33F5C4
background
#FDFFFB
surface
#F7FEF2
border
#D0D6CC
text
#10170A
muted
#81857D

Preview Lab

Preview with #66E73B

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

Preview Lab → · Contrast checker → · Palette generator →

#66E73B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva