#288EB6#288EB6

#288EB6 is a mid, moderate cyan. Relative luminance 0.232; OKLCH L 60.8% C 0.108 H 229.4°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#288EB6
RGB	rgb(40, 142, 182)
HSL	hsl(197, 64%, 44%)
HSV	hsv(197, 78%, 71%)
CMYK	cmyk(78%, 22%, 0%, 28.6%)
CIE-LAB	lab(55.25, -14.82, -29.07)
CIE-LCH	lch(55.25, 32.63, 243.00°)
OKLab	oklab(60.78% -0.0701 -0.0817)
OKLCH	oklch(60.78% 0.108 229.4)
XYZ	xyz(18.9881, 23.1722, 47.7188)
Luminance	0.2318 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288EB6 #B65028

analogous

#28B697 #288EB6 #2847B6

triadic

#288EB6 #B6288E #8EB628

tetradic

#288EB6 #9728B6 #B65028 #47B628

square

#288EB6 #9728B6 #B65028 #47B628

split-complementary

#288EB6 #B62847 #B69728

monochromatic

#124052 #1D6784 #288EB6 #45ADD6 #77C3E1

Accessibility & contrast

On white

3.73

#288EB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#288EB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288EB6

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288EB6	#FFFFFF	#000000	##000000
##288EB6	1.00	3.73	5.64	5.64
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#798CB8

Deuteranopia (green-blind)

#667EB5

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #288eb6;
/* rgb */ color: rgb(40, 142, 182);
/* oklch */ color: oklch(60.8% 0.108 229.4);

Tailwind

colors: {
  custom: {
    50: '#78afcc',
    500: '#288eb6',
    950: '#000000',
  },
}

SCSS

$custom: #288eb6;
$custom-light: #78afcc;
$custom-dark: #000000;

JSON

{
  "hex": "#288eb6",
  "rgb": {
    "r": 40,
    "g": 142,
    "b": 182
  },
  "hsl": {
    "h": 196.901,
    "s": 63.964,
    "l": 43.529
  },
  "oklch": {
    "l": 0.60784,
    "c": 0.1077,
    "h": 229.4
  },
  "luminance": 0.23175
}

Semantic roles & 50–950 ramp

primary

#288EB6

secondary

#C98A71

accent

#7041E7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #288EB6

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

Preview Lab → · Contrast checker → · Palette generator →