#288F9C#288F9C

#288F9C is a mid, moderate teal. Relative luminance 0.225; OKLCH L 59.9% C 0.092 H 207.5°. Best body text is #000000 at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#288F9C
RGB	rgb(40, 143, 156)
HSL	hsl(187, 59%, 38%)
HSV	hsv(187, 74%, 61%)
CMYK	cmyk(74.4%, 8.3%, 0%, 38.8%)
CIE-LAB	lab(54.55, -24.06, -15.25)
CIE-LCH	lch(54.55, 28.49, 212.37°)
OKLab	oklab(59.89% -0.0815 -0.0424)
OKLCH	oklch(59.89% 0.092 207.5)
XYZ	xyz(16.6957, 22.4943, 34.9080)
Luminance	0.2250 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288F9C #9C3528

analogous

#289C6F #288F9C #28559C

triadic

#288F9C #9C288F #8F9C28

tetradic

#288F9C #6F289C #9C3528 #559C28

square

#288F9C #6F289C #9C3528 #559C28

split-complementary

#288F9C #9C2855 #9C6F28

monochromatic

#0F363B #1C626B #288F9C #36BBCB #67CBD8

Accessibility & contrast

On white

3.82

#288F9C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.50

#288F9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288F9C

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288F9C	#FFFFFF	#000000	##000000
##288F9C	1.00	3.82	5.50	5.50
#FFFFFF	3.82	1.00	21.00	21.00
#000000	5.50	21.00	1.00	1.00
##000000	5.50	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#82899D

Deuteranopia (green-blind)

#727D9C

Tritanopia (blue-blind)

#009693

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288f9c;
/* rgb */ color: rgb(40, 143, 156);
/* oklch */ color: oklch(59.9% 0.092 207.5);

Tailwind

colors: {
  custom: {
    50: '#75b0b9',
    500: '#288f9c',
    950: '#000000',
  },
}

SCSS

$custom: #288f9c;
$custom-light: #75b0b9;
$custom-dark: #000000;

JSON

{
  "hex": "#288f9c",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 156
  },
  "hsl": {
    "h": 186.724,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.59886,
    "c": 0.09191,
    "h": 207.5
  },
  "luminance": 0.22496
}

Semantic roles & 50–950 ramp

primary

#288F9C

secondary

#BE6C62

accent

#5745E2

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1011

muted

#7C7F80

Preview Lab

Preview with #288F9C

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

Preview Lab → · Contrast checker → · Palette generator →