#288DA8#288DA8

#288DA8 is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 59.9% C 0.097 H 220.1°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#288DA8
RGB	rgb(40, 141, 168)
HSL	hsl(193, 62%, 41%)
HSV	hsv(193, 76%, 66%)
CMYK	cmyk(76.2%, 16.1%, 0%, 34.1%)
CIE-LAB	lab(54.37, -19.07, -22.42)
CIE-LCH	lch(54.37, 29.43, 229.62°)
OKLab	oklab(59.89% -0.0745 -0.0627)
OKLCH	oklch(59.89% 0.097 220.1)
XYZ	xyz(17.4649, 22.3259, 40.4271)
Luminance	0.2233 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288DA8 #A84328

analogous

#28A883 #288DA8 #284DA8

triadic

#288DA8 #A8288D #8DA828

tetradic

#288DA8 #8328A8 #A84328 #4DA828

square

#288DA8 #8328A8 #A84328 #4DA828

split-complementary

#288DA8 #A8284D #A88328

monochromatic

#103A45 #1C6477 #288DA8 #3DB1D1 #6EC5DC

Accessibility & contrast

On white

3.84

#288DA8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#288DA8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288DA8

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288DA8	#FFFFFF	#000000	##000000
##288DA8	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D89A9

Deuteranopia (green-blind)

#6B7DA8

Tritanopia (blue-blind)

#009696

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #288da8;
/* rgb */ color: rgb(40, 141, 168);
/* oklch */ color: oklch(59.9% 0.097 220.1);

Tailwind

colors: {
  custom: {
    50: '#76aec2',
    500: '#288da8',
    950: '#000000',
  },
}

SCSS

$custom: #288da8;
$custom-light: #76aec2;
$custom-dark: #000000;

JSON

{
  "hex": "#288da8",
  "rgb": {
    "r": 40,
    "g": 141,
    "b": 168
  },
  "hsl": {
    "h": 192.656,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.59892,
    "c": 0.09737,
    "h": 220.1
  },
  "luminance": 0.22328
}

Semantic roles & 50–950 ramp

primary

#288DA8

secondary

#C37C69

accent

#6543E5

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288DA8

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

Preview Lab → · Contrast checker → · Palette generator →