#428C1A#428C1A

#428C1A is a mid, vivid yellow-green. Relative luminance 0.200; OKLCH L 57.0% C 0.161 H 137.4°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#428C1A
RGB	rgb(66, 140, 26)
HSL	hsl(99, 69%, 33%)
HSV	hsv(99, 81%, 55%)
CMYK	cmyk(52.9%, 0%, 81.4%, 45.1%)
CIE-LAB	lab(51.82, -42.84, 49.29)
CIE-LCH	lch(51.82, 65.30, 130.99°)
OKLab	oklab(57.05% -0.1188 0.1093)
OKLCH	oklch(57.05% 0.161 137.4)
XYZ	xyz(11.8109, 19.9881, 4.2128)
Luminance	0.1999 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428C1A #641A8C

analogous

#7B8C1A #428C1A #1A8C2B

triadic

#428C1A #1A428C #8C1A42

tetradic

#428C1A #1A7B8C #641A8C #8C2B1A

square

#428C1A #1A7B8C #641A8C #8C2B1A

split-complementary

#428C1A #2B1A8C #8C1A7B

monochromatic

#112507 #2A5810 #428C1A #5AC024 #7ADC44

Accessibility & contrast

On white

4.20

#428C1A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#428C1A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428C1A

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428C1A	#FFFFFF	#000000	##000000
##428C1A	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)

#877927

Tritanopia (blue-blind)

#3D8777

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #428c1a;
/* rgb */ color: rgb(66, 140, 26);
/* oklch */ color: oklch(57.0% 0.161 137.4);

Tailwind

colors: {
  custom: {
    50: '#7fae61',
    500: '#428c1a',
    950: '#000000',
  },
}

SCSS

$custom: #428c1a;
$custom-light: #7fae61;
$custom-dark: #000000;

JSON

{
  "hex": "#428c1a",
  "rgb": {
    "r": 66,
    "g": 140,
    "b": 26
  },
  "hsl": {
    "h": 98.947,
    "s": 68.675,
    "l": 32.549
  },
  "oklch": {
    "l": 0.5705,
    "c": 0.16143,
    "h": 137.4
  },
  "luminance": 0.19989
}

Semantic roles & 50–950 ramp

primary

#428C1A

secondary

#9344BE

accent

#3CECAE

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428C1A

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

Preview Lab → · Contrast checker → · Palette generator →