#428B1D#428B1D

#428B1D is a mid, vivid yellow-green. Relative luminance 0.197; OKLCH L 56.8% C 0.159 H 137.6°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX#428B1D
RGBrgb(66, 139, 29)
HSLhsl(100, 65%, 33%)
HSVhsv(100, 79%, 55%)
CMYKcmyk(52.5%, 0%, 79.1%, 45.5%)
CIE-LABlab(51.51, -42.26, 48.02)
CIE-LCHlch(51.51, 63.97, 131.35°)
OKLaboklab(56.8% -0.1171 0.1071)
OKLCHoklch(56.8% 0.159 137.6)
XYZxyz(11.7008, 19.7113, 4.3503)
Luminance0.1971 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#428B1D #661D8B
analogous
#798B1D #428B1D #1D8B2F
triadic
#428B1D #1D428B #8B1D42
tetradic
#428B1D #1D798B #661D8B #8B2F1D
square
#428B1D #1D798B #661D8B #8B2F1D
split-complementary
#428B1D #2F1D8B #8B1D79
monochromatic
#122608 #2A5812 #428B1D #5ABE28 #7AD949

Accessibility & contrast

On white

4.25
#428B1D on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.94
#428B1D on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428B1D
4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##428B1D#FFFFFF#000000##000000
##428B1D1.004.254.944.94
#FFFFFF4.251.0021.0021.00
#0000004.9421.001.001.00
##0000004.9421.001.001.00

Color blindness preview

Protanopia (red-blind)
#907F01
Deuteranopia (green-blind)
#867829
Tritanopia (blue-blind)
#3D8676
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #428b1d;
/* rgb */ color: rgb(66, 139, 29);
/* oklch */ color: oklch(56.8% 0.159 137.6);
Tailwind
colors: {
  custom: {
    50: '#7ead62',
    500: '#428b1d',
    950: '#000000',
  },
}
SCSS
$custom: #428b1d;
$custom-light: #7ead62;
$custom-dark: #000000;
JSON
{
  "hex": "#428b1d",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 29
  },
  "hsl": {
    "h": 99.818,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.56796,
    "c": 0.15867,
    "h": 137.6
  },
  "luminance": 0.19712
}

Semantic roles & 50–950 ramp

primary
#428B1D
secondary
#9549BB
accent
#3FE8B0
background
#F8FAF6
surface
#EFF4EB
border
#CACEC6
text
#0B1006
muted
#7C7F7A

Preview Lab

Preview with #428B1D

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

Preview Lab → · Contrast checker → · Palette generator →

#428B1D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva