#428B1C#428B1C

#428B1C is a mid, vivid yellow-green. Relative luminance 0.197; OKLCH L 56.8% C 0.159 H 137.5°. Best body text is #000000 at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#428B1C
RGB	rgb(66, 139, 28)
HSL	hsl(99, 66%, 33%)
HSV	hsv(99, 80%, 55%)
CMYK	cmyk(52.5%, 0%, 79.9%, 45.5%)
CIE-LAB	lab(51.50, -42.32, 48.35)
CIE-LCH	lch(51.50, 64.26, 131.20°)
OKLab	oklab(56.79% -0.1173 0.1076)
OKLCH	oklch(56.79% 0.159 137.5)
XYZ	xyz(11.6886, 19.7065, 4.2862)
Luminance	0.1971 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428B1C #651C8B

analogous

#7A8B1C #428B1C #1C8B2D

triadic

#428B1C #1C428B #8B1C42

tetradic

#428B1C #1C7A8B #651C8B #8B2D1C

square

#428B1C #1C7A8B #651C8B #8B2D1C

split-complementary

#428B1C #2D1C8B #8B1C7A

monochromatic

#122507 #2A5812 #428B1C #5ABE26 #7ADA47

Accessibility & contrast

On white

4.25

#428B1C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.94

#428B1C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428B1C

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428B1C	#FFFFFF	#000000	##000000
##428B1C	1.00	4.25	4.94	4.94
#FFFFFF	4.25	1.00	21.00	21.00
#000000	4.94	21.00	1.00	1.00
##000000	4.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#907E00

Deuteranopia (green-blind)

#867828

Tritanopia (blue-blind)

#3D8676

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #428b1c;
/* rgb */ color: rgb(66, 139, 28);
/* oklch */ color: oklch(56.8% 0.159 137.5);

Tailwind

colors: {
  custom: {
    50: '#7ead62',
    500: '#428b1c',
    950: '#000000',
  },
}

SCSS

$custom: #428b1c;
$custom-light: #7ead62;
$custom-dark: #000000;

JSON

{
  "hex": "#428b1c",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 28
  },
  "hsl": {
    "h": 99.459,
    "s": 66.467,
    "l": 32.745
  },
  "oklch": {
    "l": 0.56789,
    "c": 0.1592,
    "h": 137.5
  },
  "luminance": 0.19707
}

Semantic roles & 50–950 ramp

primary

#428B1C

secondary

#9447BC

accent

#3EE9AF

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428B1C

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

Preview Lab → · Contrast checker → · Palette generator →