#428E11#428E11

#428E11 is a mid, vivid yellow-green. Relative luminance 0.205; OKLCH L 57.6% C 0.168 H 137.0°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX#428E11
RGBrgb(66, 142, 17)
HSLhsl(96, 79%, 31%)
HSVhsv(96, 88%, 56%)
CMYKcmyk(53.5%, 0%, 88%, 44.3%)
CIE-LABlab(52.45, -44.05, 52.30)
CIE-LCHlch(52.45, 68.38, 130.11°)
OKLaboklab(57.55% -0.1226 0.1143)
OKLCHoklch(57.55% 0.168 137)
XYZxyz(12.0206, 20.5438, 3.8621)
Luminance0.2054 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#428E11 #5D118E
analogous
#808E11 #428E11 #118E1E
triadic
#428E11 #11428E #8E1142
tetradic
#428E11 #11808E #5D118E #8E1E11
square
#428E11 #11808E #5D118E #8E1E11
split-complementary
#428E11 #1E118E #8E1180
monochromatic
#0F2104 #29570A #428E11 #5BC518 #79E733

Accessibility & contrast

On white

4.11
#428E11 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.11
#428E11 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428E11
5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##428E11#FFFFFF#000000##000000
##428E111.004.115.115.11
#FFFFFF4.111.0021.0021.00
#0000005.1121.001.001.00
##0000005.1121.001.001.00

Color blindness preview

Protanopia (red-blind)
#938100
Deuteranopia (green-blind)
#897B23
Tritanopia (blue-blind)
#3D8978
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #428e11;
/* rgb */ color: rgb(66, 142, 17);
/* oklch */ color: oklch(57.6% 0.168 137.0);
Tailwind
colors: {
  custom: {
    50: '#7fb05e',
    500: '#428e11',
    950: '#000000',
  },
}
SCSS
$custom: #428e11;
$custom-light: #7fb05e;
$custom-dark: #000000;
JSON
{
  "hex": "#428e11",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 17
  },
  "hsl": {
    "h": 96.48,
    "s": 78.616,
    "l": 31.176
  },
  "oklch": {
    "l": 0.57551,
    "c": 0.16757,
    "h": 137
  },
  "luminance": 0.20545
}

Semantic roles & 50–950 ramp

primary
#428E11
secondary
#8C38C2
accent
#33F5A9
background
#F8FAF5
surface
#EFF5EA
border
#CACFC6
text
#0B1005
muted
#7C7F79

Preview Lab

Preview with #428E11

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

Preview Lab → · Contrast checker → · Palette generator →

#428E11 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva