#428A1B#428A1B

#428A1B is a mid, vivid yellow-green. Relative luminance 0.194; OKLCH L 56.5% C 0.158 H 137.3°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#428A1B
RGB	rgb(66, 138, 27)
HSL	hsl(99, 67%, 32%)
HSV	hsv(99, 80%, 54%)
CMYK	cmyk(52.2%, 0%, 80.4%, 45.9%)
CIE-LAB	lab(51.17, -41.98, 48.36)
CIE-LCH	lch(51.17, 64.04, 130.96°)
OKLab	oklab(56.51% -0.1165 0.1075)
OKLCH	oklch(56.51% 0.158 137.3)
XYZ	xyz(11.5327, 19.4135, 4.1762)
Luminance	0.1941 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428A1B #631B8A

analogous

#7A8A1B #428A1B #1B8A2C

triadic

#428A1B #1B428A #8A1B42

tetradic

#428A1B #1B7A8A #631B8A #8A2C1B

square

#428A1B #1B7A8A #631B8A #8A2C1B

split-complementary

#428A1B #2C1B8A #8A1B7A

monochromatic

#112407 #2A5711 #428A1B #5ABD25 #79DB45

Accessibility & contrast

On white

4.30

#428A1B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#428A1B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428A1B

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428A1B	#FFFFFF	#000000	##000000
##428A1B	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F7E00

Deuteranopia (green-blind)

#857828

Tritanopia (blue-blind)

#3D8575

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #428a1b;
/* rgb */ color: rgb(66, 138, 27);
/* oklch */ color: oklch(56.5% 0.158 137.3);

Tailwind

colors: {
  custom: {
    50: '#7ead61',
    500: '#428a1b',
    950: '#000000',
  },
}

SCSS

$custom: #428a1b;
$custom-light: #7ead61;
$custom-dark: #000000;

JSON

{
  "hex": "#428a1b",
  "rgb": {
    "r": 66,
    "g": 138,
    "b": 27
  },
  "hsl": {
    "h": 98.919,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.56511,
    "c": 0.15848,
    "h": 137.3
  },
  "luminance": 0.19414
}

Semantic roles & 50–950 ramp

primary

#428A1B

secondary

#9245BC

accent

#3EEAAE

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428A1B

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

Preview Lab → · Contrast checker → · Palette generator →