#66B31A#66B31A

#66B31A is a light, vivid yellow-green. Relative luminance 0.351; OKLCH L 69.0% C 0.190 H 134.0°. Best body text is #000000 at 8.03:1 contrast (WCAG AA passes).

Color values

HEX#66B31A
RGBrgb(102, 179, 26)
HSLhsl(90, 75%, 40%)
HSVhsv(90, 85%, 70%)
CMYKcmyk(43%, 0%, 85.5%, 29.8%)
CIE-LABlab(65.86, -46.83, 62.52)
CIE-LCHlch(65.86, 78.12, 126.84°)
OKLaboklab(69.01% -0.1319 0.1365)
OKLCHoklch(69.01% 0.19 134)
XYZxyz(21.7856, 35.1383, 6.6115)
Luminance0.3514 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B31A #671AB3
analogous
#B2B31A #66B31A #1AB31A
triadic
#66B31A #1A66B3 #B31A66
tetradic
#66B31A #1AB2B3 #671AB3 #B31A1A
square
#66B31A #1AB2B3 #671AB3 #B31A1A
split-complementary
#66B31A #1A1AB3 #B31AB2
monochromatic
#29480A #487E12 #66B31A #85E02A #A3E860

Accessibility & contrast

On white

2.62
#66B31A on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.03
#66B31A on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B31A
8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B31A#FFFFFF#000000##000000
##66B31A1.002.628.038.03
#FFFFFF2.621.0021.0021.00
#0000008.0321.001.001.00
##0000008.0321.001.001.00

Color blindness preview

Protanopia (red-blind)
#BAA400
Deuteranopia (green-blind)
#B09E2E
Tritanopia (blue-blind)
#65AC98
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #66b31a;
/* rgb */ color: rgb(102, 179, 26);
/* oklch */ color: oklch(69.0% 0.190 134.0);
Tailwind
colors: {
  custom: {
    50: '#99ca68',
    500: '#66b31a',
    950: '#000000',
  },
}
SCSS
$custom: #66b31a;
$custom-light: #99ca68;
$custom-dark: #000000;
JSON
{
  "hex": "#66b31a",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 26
  },
  "hsl": {
    "h": 90.196,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.69007,
    "c": 0.18978,
    "h": 134
  },
  "luminance": 0.3514
}

Semantic roles & 50–950 ramp

primary
#66B31A
secondary
#955DCC
accent
#37F195
background
#F9FCF6
surface
#F2F8EB
border
#CCD1C6
text
#0F1307
muted
#7E827A

Preview Lab

Preview with #66B31A

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

Preview Lab → · Contrast checker → · Palette generator →

#66B31A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva