#288B4B#288B4B

#288B4B is a mid, vivid green. Relative luminance 0.194; OKLCH L 56.5% C 0.133 H 151.0°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#288B4B
RGB	rgb(40, 139, 75)
HSL	hsl(141, 55%, 35%)
HSV	hsv(141, 71%, 55%)
CMYK	cmyk(71.2%, 0%, 46%, 45.5%)
CIE-LAB	lab(51.18, -43.15, 26.18)
CIE-LCH	lch(51.18, 50.47, 148.75°)
OKLab	oklab(56.45% -0.1162 0.0644)
OKLCH	oklch(56.45% 0.133 151)
XYZ	xyz(11.3768, 19.4231, 9.8047)
Luminance	0.1942 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288B4B #8B2868

analogous

#378B28 #288B4B #288B7C

triadic

#288B4B #4B288B #8B4B28

tetradic

#288B4B #28378B #8B2868 #8B7C28

square

#288B4B #28378B #8B2868 #8B7C28

split-complementary

#288B4B #7C288B #8B2837

monochromatic

#0D2C18 #1A5B31 #288B4B #36BB65 #5DD086

Accessibility & contrast

On white

4.30

#288B4B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#288B4B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288B4B

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288B4B	#FFFFFF	#000000	##000000
##288B4B	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C7F46

Deuteranopia (green-blind)

#7F774F

Tritanopia (blue-blind)

#00897C

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #288b4b;
/* rgb */ color: rgb(40, 139, 75);
/* oklch */ color: oklch(56.5% 0.133 151.0);

Tailwind

colors: {
  custom: {
    50: '#70ae7e',
    500: '#288b4b',
    950: '#000000',
  },
}

SCSS

$custom: #288b4b;
$custom-light: #70ae7e;
$custom-dark: #000000;

JSON

{
  "hex": "#288b4b",
  "rgb": {
    "r": 40,
    "g": 139,
    "b": 75
  },
  "hsl": {
    "h": 141.212,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.5645,
    "c": 0.13287,
    "h": 151
  },
  "luminance": 0.19424
}

Semantic roles & 50–950 ramp

primary

#288B4B

secondary

#B65995

accent

#49AADF

background

#F7FAF7

surface

#EDF4EE

border

#C8CEC9

text

#08100A

muted

#7B7F7C

Preview Lab

Preview with #288B4B

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

Preview Lab → · Contrast checker → · Palette generator →