#288F4B#288F4B

#288F4B is a mid, vivid green. Relative luminance 0.206; OKLCH L 57.6% C 0.138 H 150.4°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#288F4B
RGB	rgb(40, 143, 75)
HSL	hsl(140, 56%, 36%)
HSV	hsv(140, 72%, 56%)
CMYK	cmyk(72%, 0%, 47.6%, 43.9%)
CIE-LAB	lab(52.51, -44.71, 27.88)
CIE-LCH	lch(52.51, 52.69, 148.05°)
OKLab	oklab(57.55% -0.1204 0.0683)
OKLCH	oklch(57.55% 0.138 150.4)
XYZ	xyz(11.9666, 20.6027, 10.0013)
Luminance	0.2060 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288F4B #8F286C

analogous

#398F28 #288F4B #288F7E

triadic

#288F4B #4B288F #8F4B28

tetradic

#288F4B #28398F #8F286C #8F7E28

square

#288F4B #28398F #8F286C #8F7E28

split-complementary

#288F4B #7E288F #8F2839

monochromatic

#0D2F19 #1B5F32 #288F4B #35BF64 #5FD286

Accessibility & contrast

On white

4.10

#288F4B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#288F4B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288F4B

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288F4B	#FFFFFF	#000000	##000000
##288F4B	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#908346

Deuteranopia (green-blind)

#837A50

Tritanopia (blue-blind)

#008D7F

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #288f4b;
/* rgb */ color: rgb(40, 143, 75);
/* oklch */ color: oklch(57.6% 0.138 150.4);

Tailwind

colors: {
  custom: {
    50: '#71b17e',
    500: '#288f4b',
    950: '#000000',
  },
}

SCSS

$custom: #288f4b;
$custom-light: #71b17e;
$custom-dark: #000000;

JSON

{
  "hex": "#288f4b",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 75
  },
  "hsl": {
    "h": 140.388,
    "s": 56.284,
    "l": 35.882
  },
  "oklch": {
    "l": 0.5755,
    "c": 0.13839,
    "h": 150.4
  },
  "luminance": 0.20604
}

Semantic roles & 50–950 ramp

primary

#288F4B

secondary

#B85B98

accent

#48ACE0

background

#F7FBF7

surface

#EDF6EE

border

#C8D0C9

text

#09110A

muted

#7B807C

Preview Lab

Preview with #288F4B

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

Preview Lab → · Contrast checker → · Palette generator →