#288F9B#288F9B

#288F9B is a mid, moderate teal. Relative luminance 0.225; OKLCH L 59.8% C 0.092 H 206.5°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#288F9B
RGB	rgb(40, 143, 155)
HSL	hsl(186, 59%, 38%)
HSV	hsv(186, 74%, 61%)
CMYK	cmyk(74.2%, 7.7%, 0%, 39.2%)
CIE-LAB	lab(54.51, -24.38, -14.73)
CIE-LCH	lch(54.51, 28.49, 211.13°)
OKLab	oklab(59.85% -0.082 -0.0409)
OKLCH	oklch(59.85% 0.092 206.5)
XYZ	xyz(16.6113, 22.4606, 34.4638)
Luminance	0.2246 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288F9B #9B3428

analogous

#289B6D #288F9B #28559B

triadic

#288F9B #9B288F #8F9B28

tetradic

#288F9B #6D289B #9B3428 #559B28

square

#288F9B #6D289B #9B3428 #559B28

split-complementary

#288F9B #9B2855 #9B6D28

monochromatic

#0F353A #1B626A #288F9B #35BBCB #66CCD7

Accessibility & contrast

On white

3.82

#288F9B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#288F9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288F9B

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288F9B	#FFFFFF	#000000	##000000
##288F9B	1.00	3.82	5.49	5.49
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#83899C

Deuteranopia (green-blind)

#727D9B

Tritanopia (blue-blind)

#009593

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288f9b;
/* rgb */ color: rgb(40, 143, 155);
/* oklch */ color: oklch(59.8% 0.092 206.5);

Tailwind

colors: {
  custom: {
    50: '#74b0b8',
    500: '#288f9b',
    950: '#000000',
  },
}

SCSS

$custom: #288f9b;
$custom-light: #74b0b8;
$custom-dark: #000000;

JSON

{
  "hex": "#288f9b",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 155
  },
  "hsl": {
    "h": 186.261,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.59845,
    "c": 0.09163,
    "h": 206.5
  },
  "luminance": 0.22463
}

Semantic roles & 50–950 ramp

primary

#288F9B

secondary

#BD6B61

accent

#5646E2

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #288F9B

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

Preview Lab → · Contrast checker → · Palette generator →