#428E12#428E12

#428E12 is a mid, vivid yellow-green. Relative luminance 0.205; OKLCH L 57.6% C 0.167 H 137.1°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#428E12
RGB	rgb(66, 142, 18)
HSL	hsl(97, 78%, 31%)
HSV	hsv(97, 87%, 56%)
CMYK	cmyk(53.5%, 0%, 87.3%, 44.3%)
CIE-LAB	lab(52.45, -44.01, 52.07)
CIE-LCH	lch(52.45, 68.18, 130.21°)
OKLab	oklab(57.56% -0.1224 0.1139)
OKLCH	oklch(57.56% 0.167 137.1)
XYZ	xyz(12.0286, 20.5470, 3.9043)
Luminance	0.2055 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428E12 #5E128E

analogous

#808E12 #428E12 #128E20

triadic

#428E12 #12428E #8E1242

tetradic

#428E12 #12808E #5E128E #8E2012

square

#428E12 #12808E #5E128E #8E2012

split-complementary

#428E12 #20128E #8E1280

monochromatic

#102104 #29580B #428E12 #5BC419 #79E535

Accessibility & contrast

On white

4.11

#428E12 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#428E12 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428E12

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428E12	#FFFFFF	#000000	##000000
##428E12	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#938100

Deuteranopia (green-blind)

#897B23

Tritanopia (blue-blind)

#3D8978

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #428e12;
/* rgb */ color: rgb(66, 142, 18);
/* oklch */ color: oklch(57.6% 0.167 137.1);

Tailwind

colors: {
  custom: {
    50: '#7fb05e',
    500: '#428e12',
    950: '#000000',
  },
}

SCSS

$custom: #428e12;
$custom-light: #7fb05e;
$custom-dark: #000000;

JSON

{
  "hex": "#428e12",
  "rgb": {
    "r": 66,
    "g": 142,
    "b": 18
  },
  "hsl": {
    "h": 96.774,
    "s": 77.5,
    "l": 31.373
  },
  "oklch": {
    "l": 0.57555,
    "c": 0.16722,
    "h": 137.1
  },
  "luminance": 0.20548
}

Semantic roles & 50–950 ramp

primary

#428E12

secondary

#8D3AC2

accent

#34F4AA

background

#F8FAF5

surface

#EFF5EA

border

#CACFC6

text

#0B1005

muted

#7C7F79

Preview Lab

Preview with #428E12

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

Preview Lab → · Contrast checker → · Palette generator →