#288FA6#288FA6

#288FA6 is a mid, moderate cyan. Relative luminance 0.228; OKLCH L 60.3% C 0.096 H 216.4°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#288FA6
RGB	rgb(40, 143, 166)
HSL	hsl(191, 61%, 40%)
HSV	hsv(191, 76%, 65%)
CMYK	cmyk(75.9%, 13.9%, 0%, 34.9%)
CIE-LAB	lab(54.91, -20.80, -20.44)
CIE-LCH	lch(54.91, 29.16, 224.50°)
OKLab	oklab(60.3% -0.0773 -0.057)
OKLCH	oklch(60.3% 0.096 216.4)
XYZ	xyz(17.5775, 22.8471, 39.5525)
Luminance	0.2285 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288FA6 #A63F28

analogous

#28A67E #288FA6 #2850A6

triadic

#288FA6 #A6288F #8FA628

tetradic

#288FA6 #7E28A6 #A63F28 #50A628

square

#288FA6 #7E28A6 #A63F28 #50A628

split-complementary

#288FA6 #A62850 #A67E28

monochromatic

#103A43 #1C6575 #288FA6 #3BB5D0 #6DC7DC

Accessibility & contrast

On white

3.77

#288FA6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#288FA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288FA6

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288FA6	#FFFFFF	#000000	##000000
##288FA6	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#808BA7

Deuteranopia (green-blind)

#6E7EA6

Tritanopia (blue-blind)

#009796

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #288fa6;
/* rgb */ color: rgb(40, 143, 166);
/* oklch */ color: oklch(60.3% 0.096 216.4);

Tailwind

colors: {
  custom: {
    50: '#76b0c0',
    500: '#288fa6',
    950: '#000000',
  },
}

SCSS

$custom: #288fa6;
$custom-light: #76b0c0;
$custom-dark: #000000;

JSON

{
  "hex": "#288fa6",
  "rgb": {
    "r": 40,
    "g": 143,
    "b": 166
  },
  "hsl": {
    "h": 190.952,
    "s": 61.165,
    "l": 40.392
  },
  "oklch": {
    "l": 0.60303,
    "c": 0.09609,
    "h": 216.4
  },
  "luminance": 0.22849
}

Semantic roles & 50–950 ramp

primary

#288FA6

secondary

#C27867

accent

#6144E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288FA6

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

Preview Lab → · Contrast checker → · Palette generator →