#428F12#428F12

#428F12 is a mid, vivid yellow-green. Relative luminance 0.208; OKLCH L 57.8% C 0.168 H 137.1°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#428F12
RGB	rgb(66, 143, 18)
HSL	hsl(97, 78%, 32%)
HSV	hsv(97, 87%, 56%)
CMYK	cmyk(53.8%, 0%, 87.4%, 43.9%)
CIE-LAB	lab(52.78, -44.40, 52.36)
CIE-LCH	lch(52.78, 68.65, 130.30°)
OKLab	oklab(57.83% -0.1234 0.1145)
OKLCH	oklch(57.83% 0.168 137.1)
XYZ	xyz(12.1780, 20.8459, 3.9541)
Luminance	0.2085 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F12 #5F128F

analogous

#818F12 #428F12 #128F21

triadic

#428F12 #12428F #8F1242

tetradic

#428F12 #12818F #5F128F #8F2112

square

#428F12 #12818F #5F128F #8F2112

split-complementary

#428F12 #21128F #8F1281

monochromatic

#102204 #29590B #428F12 #5BC519 #79E636

Accessibility & contrast

On white

4.06

#428F12 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#428F12 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F12

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F12	#FFFFFF	#000000	##000000
##428F12	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948200

Deuteranopia (green-blind)

#8A7C23

Tritanopia (blue-blind)

#3D8A79

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #428f12;
/* rgb */ color: rgb(66, 143, 18);
/* oklch */ color: oklch(57.8% 0.168 137.1);

Tailwind

colors: {
  custom: {
    50: '#7fb05f',
    500: '#428f12',
    950: '#000000',
  },
}

SCSS

$custom: #428f12;
$custom-light: #7fb05f;
$custom-dark: #000000;

JSON

{
  "hex": "#428f12",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 18
  },
  "hsl": {
    "h": 96.96,
    "s": 77.64,
    "l": 31.569
  },
  "oklch": {
    "l": 0.57827,
    "c": 0.1684,
    "h": 137.1
  },
  "luminance": 0.20847
}

Semantic roles & 50–950 ramp

primary

#428F12

secondary

#8E3AC3

accent

#34F4AA

background

#F8FAF5

surface

#EFF5EA

border

#CACFC6

text

#0B1105

muted

#7C8079

Preview Lab

Preview with #428F12

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

Preview Lab → · Contrast checker → · Palette generator →