#428D1B#428D1B

#428D1B is a mid, vivid yellow-green. Relative luminance 0.203; OKLCH L 57.3% C 0.162 H 137.6°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#428D1B
RGB	rgb(66, 141, 27)
HSL	hsl(99, 68%, 33%)
HSV	hsv(99, 81%, 55%)
CMYK	cmyk(53.2%, 0%, 80.9%, 44.7%)
CIE-LAB	lab(52.16, -43.17, 49.29)
CIE-LCH	lch(52.16, 65.53, 131.21°)
OKLab	oklab(57.33% -0.1197 0.1094)
OKLCH	oklch(57.33% 0.162 137.6)
XYZ	xyz(11.9691, 20.2862, 4.3216)
Luminance	0.2029 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428D1B #661B8D

analogous

#7B8D1B #428D1B #1B8D2D

triadic

#428D1B #1B428D #8D1B42

tetradic

#428D1B #1B7B8D #661B8D #8D2D1B

square

#428D1B #1B7B8D #661B8D #8D2D1B

split-complementary

#428D1B #2D1B8D #8D1B7B

monochromatic

#122607 #2A5A11 #428D1B #5AC025 #7ADC47

Accessibility & contrast

On white

4.15

#428D1B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#428D1B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428D1B

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428D1B	#FFFFFF	#000000	##000000
##428D1B	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#928000

Deuteranopia (green-blind)

#887A28

Tritanopia (blue-blind)

#3D8878

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #428d1b;
/* rgb */ color: rgb(66, 141, 27);
/* oklch */ color: oklch(57.3% 0.162 137.6);

Tailwind

colors: {
  custom: {
    50: '#7faf62',
    500: '#428d1b',
    950: '#000000',
  },
}

SCSS

$custom: #428d1b;
$custom-light: #7faf62;
$custom-dark: #000000;

JSON

{
  "hex": "#428d1b",
  "rgb": {
    "r": 66,
    "g": 141,
    "b": 27
  },
  "hsl": {
    "h": 99.474,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.57328,
    "c": 0.16216,
    "h": 137.6
  },
  "luminance": 0.20287
}

Semantic roles & 50–950 ramp

primary

#428D1B

secondary

#9546BD

accent

#3DEBAF

background

#F8FAF6

surface

#EFF4EB

border

#CACEC6

text

#0B1005

muted

#7C7F7A

Preview Lab

Preview with #428D1B

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

Preview Lab → · Contrast checker → · Palette generator →