#428C1C#428C1C

#428C1C is a mid, vivid yellow-green. Relative luminance 0.200; OKLCH L 57.1% C 0.160 H 137.6°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#428C1C
RGB	rgb(66, 140, 28)
HSL	hsl(100, 67%, 33%)
HSV	hsv(100, 80%, 55%)
CMYK	cmyk(52.9%, 0%, 80%, 45.1%)
CIE-LAB	lab(51.83, -42.72, 48.66)
CIE-LCH	lch(51.83, 64.75, 131.28°)
OKLab	oklab(57.06% -0.1184 0.1083)
OKLCH	oklch(57.06% 0.16 137.6)
XYZ	xyz(11.8341, 19.9974, 4.3347)
Luminance	0.2000 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C1C #661C8C

analogous

#7A8C1C #428C1C #1C8C2E

triadic

#428C1C #1C428C #8C1C42

tetradic

#428C1C #1C7A8C #661C8C #8C2E1C

square

#428C1C #1C7A8C #661C8C #8C2E1C

split-complementary

#428C1C #2E1C8C #8C1C7A

monochromatic

#122608 #2A5912 #428C1C #5ABF26 #7ADA48

Accessibility & contrast

On white

4.20

#428C1C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#428C1C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C1C

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C1C	#FFFFFF	#000000	##000000
##428C1C	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#917F00

Deuteranopia (green-blind)

#877929

Tritanopia (blue-blind)

#3D8777

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #428c1c;
/* rgb */ color: rgb(66, 140, 28);
/* oklch */ color: oklch(57.1% 0.160 137.6);

Tailwind

colors: {
  custom: {
    50: '#7eae62',
    500: '#428c1c',
    950: '#000000',
  },
}

SCSS

$custom: #428c1c;
$custom-light: #7eae62;
$custom-dark: #000000;

JSON

{
  "hex": "#428c1c",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 28
  },
  "hsl": {
    "h": 99.643,
    "s": 66.667,
    "l": 32.941
  },
  "oklch": {
    "l": 0.57062,
    "c": 0.16043,
    "h": 137.6
  },
  "luminance": 0.19998
}

Semantic roles & 50–950 ramp

primary

#428C1C

secondary

#9548BC

accent

#3EEAAF

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428C1C

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

Preview Lab → · Contrast checker → · Palette generator →