#428E1A#428E1A

#428E1A is a mid, vivid yellow-green. Relative luminance 0.206; OKLCH L 57.6% C 0.164 H 137.6°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#428E1A
RGB	rgb(66, 142, 26)
HSL	hsl(99, 69%, 33%)
HSV	hsv(99, 82%, 56%)
CMYK	cmyk(53.5%, 0%, 81.7%, 44.3%)
CIE-LAB	lab(52.48, -43.62, 49.91)
CIE-LCH	lch(52.48, 66.29, 131.16°)
OKLab	oklab(57.59% -0.121 0.1106)
OKLCH	oklch(57.59% 0.164 137.6)
XYZ	xyz(12.1058, 20.5779, 4.3111)
Luminance	0.2058 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428E1A #661A8E

analogous

#7C8E1A #428E1A #1A8E2C

triadic

#428E1A #1A428E #8E1A42

tetradic

#428E1A #1A7C8E #661A8E #8E2C1A

square

#428E1A #1A7C8E #661A8E #8E2C1A

split-complementary

#428E1A #2C1A8E #8E1A7C

monochromatic

#122707 #2A5A11 #428E1A #5AC223 #7ADD45

Accessibility & contrast

On white

4.10

#428E1A on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#428E1A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428E1A

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428E1A	#FFFFFF	#000000	##000000
##428E1A	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938100

Deuteranopia (green-blind)

#897B28

Tritanopia (blue-blind)

#3C8979

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #428e1a;
/* rgb */ color: rgb(66, 142, 26);
/* oklch */ color: oklch(57.6% 0.164 137.6);

Tailwind

colors: {
  custom: {
    50: '#7fb061',
    500: '#428e1a',
    950: '#000000',
  },
}

SCSS

$custom: #428e1a;
$custom-light: #7fb061;
$custom-dark: #000000;

JSON

{
  "hex": "#428e1a",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 26
  },
  "hsl": {
    "h": 99.31,
    "s": 69.048,
    "l": 32.941
  },
  "oklch": {
    "l": 0.57594,
    "c": 0.16387,
    "h": 137.6
  },
  "luminance": 0.20579
}

Semantic roles & 50–950 ramp

primary

#428E1A

secondary

#9545BE

accent

#3CECAF

background

#F8FAF6

surface

#EFF5EB

border

#CACFC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428E1A

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

Preview Lab → · Contrast checker → · Palette generator →