#428B4B#428B4B

#428B4B is a mid, vivid green. Relative luminance 0.201; OKLCH L 57.3% C 0.121 H 146.3°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#428B4B
RGB	rgb(66, 139, 75)
HSL	hsl(127, 36%, 40%)
HSV	hsv(127, 53%, 55%)
CMYK	cmyk(52.5%, 0%, 46%, 45.5%)
CIE-LAB	lab(51.98, -37.09, 27.38)
CIE-LCH	lch(51.98, 46.10, 143.57°)
OKLab	oklab(57.34% -0.1006 0.0671)
OKLCH	oklch(57.34% 0.121 146.3)
XYZ	xyz(12.7486, 20.1305, 9.8690)
Luminance	0.2013 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#428B4B #8B4282

analogous

#5E8B42 #428B4B #428B6F

triadic

#428B4B #4B428B #8B4B42

tetradic

#428B4B #425E8B #8B4282 #8B6F42

square

#428B4B #425E8B #8B4282 #8B6F42

split-complementary

#428B4B #6F428B #8B425E

monochromatic

#1B381E #2E6235 #428B4B #5AB164 #83C48B

Accessibility & contrast

On white

4.18

#428B4B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#428B4B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #428B4B

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##428B4B	#FFFFFF	#000000	##000000
##428B4B	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D8046

Deuteranopia (green-blind)

#83794F

Tritanopia (blue-blind)

#35887C

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #428b4b;
/* rgb */ color: rgb(66, 139, 75);
/* oklch */ color: oklch(57.3% 0.121 146.3);

Tailwind

colors: {
  custom: {
    50: '#7cad7e',
    500: '#428b4b',
    950: '#000000',
  },
}

SCSS

$custom: #428b4b;
$custom-light: #7cad7e;
$custom-dark: #000000;

JSON

{
  "hex": "#428b4b",
  "rgb": {
    "r": 66,
    "g": 139,
    "b": 75
  },
  "hsl": {
    "h": 127.397,
    "s": 35.61,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5734,
    "c": 0.12094,
    "h": 146.3
  },
  "luminance": 0.20131
}

Semantic roles & 50–950 ramp

primary

#428B4B

secondary

#AF7AA8

accent

#5CBECC

background

#F7FAF7

surface

#EEF4EE

border

#C9CEC9

text

#0A100A

muted

#7C7F7C

Preview Lab

Preview with #428B4B

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

Preview Lab → · Contrast checker → · Palette generator →