#428A1D#428A1D

#428A1D is a mid, vivid yellow-green. Relative luminance 0.194; OKLCH L 56.5% C 0.157 H 137.5°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#428A1D
RGB	rgb(66, 138, 29)
HSL	hsl(100, 65%, 33%)
HSV	hsv(100, 79%, 54%)
CMYK	cmyk(52.2%, 0%, 79%, 45.9%)
CIE-LAB	lab(51.18, -41.86, 47.71)
CIE-LCH	lch(51.18, 63.47, 131.26°)
OKLab	oklab(56.52% -0.116 0.1064)
OKLCH	oklch(56.52% 0.157 137.5)
XYZ	xyz(11.5566, 19.4231, 4.3022)
Luminance	0.1942 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428A1D #651D8A

analogous

#788A1D #428A1D #1D8A2F

triadic

#428A1D #1D428A #8A1D42

tetradic

#428A1D #1D788A #651D8A #8A2F1D

square

#428A1D #1D788A #651D8A #8A2F1D

split-complementary

#428A1D #2F1D8A #8A1D78

monochromatic

#122508 #2A5712 #428A1D #5ABD28 #7AD949

Accessibility & contrast

On white

4.30

#428A1D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#428A1D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428A1D

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428A1D	#FFFFFF	#000000	##000000
##428A1D	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F7E02

Deuteranopia (green-blind)

#857829

Tritanopia (blue-blind)

#3D8576

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #428a1d;
/* rgb */ color: rgb(66, 138, 29);
/* oklch */ color: oklch(56.5% 0.157 137.5);

Tailwind

colors: {
  custom: {
    50: '#7ead62',
    500: '#428a1d',
    950: '#000000',
  },
}

SCSS

$custom: #428a1d;
$custom-light: #7ead62;
$custom-dark: #000000;

JSON

{
  "hex": "#428a1d",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 29
  },
  "hsl": {
    "h": 99.633,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.56523,
    "c": 0.15743,
    "h": 137.5
  },
  "luminance": 0.19424
}

Semantic roles & 50–950 ramp

primary

#428A1D

secondary

#9448BB

accent

#40E8AF

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428A1D

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

Preview Lab → · Contrast checker → · Palette generator →