#288D9B#288D9B

#288D9B is a mid, moderate teal. Relative luminance 0.219; OKLCH L 59.3% C 0.091 H 208.6°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#288D9B
RGB	rgb(40, 141, 155)
HSL	hsl(187, 59%, 38%)
HSV	hsv(187, 74%, 61%)
CMYK	cmyk(74.2%, 9%, 0%, 39.2%)
CIE-LAB	lab(53.88, -23.35, -15.68)
CIE-LCH	lch(53.88, 28.13, 213.88°)
OKLab	oklab(59.34% -0.0799 -0.0436)
OKLCH	oklch(59.34% 0.091 208.6)
XYZ	xyz(16.3138, 21.8655, 34.3647)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288D9B #9B3628

analogous

#289B6F #288D9B #28549B

triadic

#288D9B #9B288D #8D9B28

tetradic

#288D9B #6F289B #9B3628 #549B28

square

#288D9B #6F289B #9B3628 #549B28

split-complementary

#288D9B #9B2854 #9B6F28

monochromatic

#0F343A #1B616A #288D9B #35B9CB #66CAD7

Accessibility & contrast

On white

3.91

#288D9B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#288D9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288D9B

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288D9B	#FFFFFF	#000000	##000000
##288D9B	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#80889C

Deuteranopia (green-blind)

#707C9B

Tritanopia (blue-blind)

#009491

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288d9b;
/* rgb */ color: rgb(40, 141, 155);
/* oklch */ color: oklch(59.3% 0.091 208.6);

Tailwind

colors: {
  custom: {
    50: '#74aeb8',
    500: '#288d9b',
    950: '#000000',
  },
}

SCSS

$custom: #288d9b;
$custom-light: #74aeb8;
$custom-dark: #000000;

JSON

{
  "hex": "#288d9b",
  "rgb": {
    "r": 40,
    "g": 141,
    "b": 155
  },
  "hsl": {
    "h": 187.304,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.59338,
    "c": 0.09104,
    "h": 208.6
  },
  "luminance": 0.21867
}

Semantic roles & 50–950 ramp

primary

#288D9B

secondary

#BD6D61

accent

#5946E2

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #288D9B

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

Preview Lab → · Contrast checker → · Palette generator →