#428F1F#428F1F

#428F1F is a mid, vivid green. Relative luminance 0.209; OKLCH L 57.9% C 0.163 H 138.1°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#428F1F
RGB	rgb(66, 143, 31)
HSL	hsl(101, 64%, 34%)
HSV	hsv(101, 78%, 56%)
CMYK	cmyk(53.8%, 0%, 78.3%, 43.9%)
CIE-LAB	lab(52.84, -43.71, 48.63)
CIE-LCH	lch(52.84, 65.39, 131.95°)
OKLab	oklab(57.9% -0.1209 0.1086)
OKLCH	oklch(57.9% 0.163 138.1)
XYZ	xyz(12.3161, 20.9012, 4.6814)
Luminance	0.2090 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428F1F #6C1F8F

analogous

#7A8F1F #428F1F #1F8F34

triadic

#428F1F #1F428F #8F1F42

tetradic

#428F1F #1F7A8F #6C1F8F #8F341F

square

#428F1F #1F7A8F #6C1F8F #8F341F

split-complementary

#428F1F #341F8F #8F1F7A

monochromatic

#142A09 #2B5D14 #428F1F #59C12A #7AD94F

Accessibility & contrast

On white

4.05

#428F1F on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#428F1F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428F1F

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428F1F	#FFFFFF	#000000	##000000
##428F1F	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#948203

Deuteranopia (green-blind)

#8A7C2B

Tritanopia (blue-blind)

#3C8A7A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #428f1f;
/* rgb */ color: rgb(66, 143, 31);
/* oklch */ color: oklch(57.9% 0.163 138.1);

Tailwind

colors: {
  custom: {
    50: '#7fb064',
    500: '#428f1f',
    950: '#000000',
  },
}

SCSS

$custom: #428f1f;
$custom-light: #7fb064;
$custom-dark: #000000;

JSON

{
  "hex": "#428f1f",
  "rgb": {
    "r": 66,
    "g": 143,
    "b": 31
  },
  "hsl": {
    "h": 101.25,
    "s": 64.368,
    "l": 34.118
  },
  "oklch": {
    "l": 0.57897,
    "c": 0.16253,
    "h": 138.1
  },
  "luminance": 0.20902
}

Semantic roles & 50–950 ramp

primary

#428F1F

secondary

#9A4EBC

accent

#40E7B3

background

#F8FAF6

surface

#EFF5EB

border

#CACFC6

text

#0B1106

muted

#7C807A

Preview Lab

Preview with #428F1F

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

Preview Lab → · Contrast checker → · Palette generator →