#428121#428121

#428121 is a mid, vivid yellow-green. Relative luminance 0.170; OKLCH L 54.1% C 0.144 H 137.0°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#428121
RGB	rgb(66, 129, 33)
HSL	hsl(99, 59%, 32%)
HSV	hsv(99, 74%, 51%)
CMYK	cmyk(48.8%, 0%, 74.4%, 49.4%)
CIE-LAB	lab(48.22, -37.88, 43.32)
CIE-LCH	lch(48.22, 57.55, 131.17°)
OKLab	oklab(54.1% -0.105 0.0978)
OKLCH	oklch(54.1% 0.144 137)
XYZ	xyz(10.3712, 16.9679, 4.1672)
Luminance	0.1697 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428121 #602181

analogous

#728121 #428121 #218130

triadic

#428121 #214281 #812142

tetradic

#428121 #217281 #602181 #813021

square

#428121 #217281 #602181 #813021

split-complementary

#428121 #302181 #812172

monochromatic

#102008 #295015 #428121 #5BB22D #79D14B

Accessibility & contrast

On white

4.78

#428121 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#428121 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #428121

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428121	#FFFFFF	#000000	##FFFFFF
##428121	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#857610

Deuteranopia (green-blind)

#7D712A

Tritanopia (blue-blind)

#3E7C6E

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #428121;
/* rgb */ color: rgb(66, 129, 33);
/* oklch */ color: oklch(54.1% 0.144 137.0);

Tailwind

colors: {
  custom: {
    50: '#7da663',
    500: '#428121',
    950: '#000000',
  },
}

SCSS

$custom: #428121;
$custom-light: #7da663;
$custom-dark: #000000;

JSON

{
  "hex": "#428121",
  "rgb": {
    "r": 66,
    "g": 129,
    "b": 33
  },
  "hsl": {
    "h": 99.375,
    "s": 59.259,
    "l": 31.765
  },
  "oklch": {
    "l": 0.54098,
    "c": 0.14356,
    "h": 137
  },
  "luminance": 0.16969
}

Semantic roles & 50–950 ramp

primary

#428121

secondary

#8F4AB4

accent

#45E2AC

background

#F7FAF6

surface

#EEF4EB

border

#C9CEC6

text

#0A0F05

muted

#7C7F7A

Preview Lab

Preview with #428121

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

Preview Lab → · Contrast checker → · Palette generator →