#288CA8#288CA8

#288CA8 is a mid, moderate cyan. Relative luminance 0.220; OKLCH L 59.6% C 0.098 H 221.1°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#288CA8
RGB	rgb(40, 140, 168)
HSL	hsl(193, 62%, 41%)
HSV	hsv(193, 76%, 66%)
CMYK	cmyk(76.2%, 16.7%, 0%, 34.1%)
CIE-LAB	lab(54.06, -18.53, -22.89)
CIE-LCH	lch(54.06, 29.45, 231.01°)
OKLab	oklab(59.64% -0.0735 -0.064)
OKLCH	oklch(59.64% 0.098 221.1)
XYZ	xyz(17.3181, 22.0324, 40.3781)
Luminance	0.2203 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CA8 #A84428

analogous

#28A884 #288CA8 #284CA8

triadic

#288CA8 #A8288C #8CA828

tetradic

#288CA8 #8428A8 #A84428 #4CA828

square

#288CA8 #8428A8 #A84428 #4CA828

split-complementary

#288CA8 #A8284C #A88428

monochromatic

#103A45 #1C6377 #288CA8 #3DB0D1 #6EC4DC

Accessibility & contrast

On white

3.88

#288CA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#288CA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CA8

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CA8	#FFFFFF	#000000	##000000
##288CA8	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B88A9

Deuteranopia (green-blind)

#6A7CA8

Tritanopia (blue-blind)

#009595

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ca8;
/* rgb */ color: rgb(40, 140, 168);
/* oklch */ color: oklch(59.6% 0.098 221.1);

Tailwind

colors: {
  custom: {
    50: '#76adc2',
    500: '#288ca8',
    950: '#000000',
  },
}

SCSS

$custom: #288ca8;
$custom-light: #76adc2;
$custom-dark: #000000;

JSON

{
  "hex": "#288ca8",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 168
  },
  "hsl": {
    "h": 193.125,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.59643,
    "c": 0.0975,
    "h": 221.1
  },
  "luminance": 0.22034
}

Semantic roles & 50–950 ramp

primary

#288CA8

secondary

#C37C69

accent

#6643E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288CA8

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

Preview Lab → · Contrast checker → · Palette generator →