#288CA1#288CA1

#288CA1 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.3% C 0.093 H 215.2°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#288CA1
RGB	rgb(40, 140, 161)
HSL	hsl(190, 60%, 39%)
HSV	hsv(190, 75%, 63%)
CMYK	cmyk(75.2%, 13%, 0%, 36.9%)
CIE-LAB	lab(53.79, -20.87, -19.28)
CIE-LCH	lch(53.79, 28.41, 222.73°)
OKLab	oklab(59.34% -0.0763 -0.0538)
OKLCH	oklch(59.34% 0.093 215.2)
XYZ	xyz(16.6834, 21.7785, 37.0357)
Luminance	0.2178 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CA1 #A13D28

analogous

#28A17A #288CA1 #2850A1

triadic

#288CA1 #A1288C #8CA128

tetradic

#288CA1 #7A28A1 #A13D28 #50A128

square

#288CA1 #7A28A1 #A13D28 #50A128

split-complementary

#288CA1 #A12850 #A17A28

monochromatic

#10373F #1C6170 #288CA1 #39B4CE #6AC6DA

Accessibility & contrast

On white

3.92

#288CA1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#288CA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CA1

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CA1	#FFFFFF	#000000	##000000
##288CA1	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7D87A2

Deuteranopia (green-blind)

#6D7BA1

Tritanopia (blue-blind)

#009493

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ca1;
/* rgb */ color: rgb(40, 140, 161);
/* oklch */ color: oklch(59.3% 0.093 215.2);

Tailwind

colors: {
  custom: {
    50: '#75aebc',
    500: '#288ca1',
    950: '#000000',
  },
}

SCSS

$custom: #288ca1;
$custom-light: #75aebc;
$custom-dark: #000000;

JSON

{
  "hex": "#288ca1",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 161
  },
  "hsl": {
    "h": 190.413,
    "s": 60.199,
    "l": 39.412
  },
  "oklch": {
    "l": 0.59336,
    "c": 0.09338,
    "h": 215.2
  },
  "luminance": 0.2178
}

Semantic roles & 50–950 ramp

primary

#288CA1

secondary

#C07565

accent

#6044E3

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288CA1

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

Preview Lab → · Contrast checker → · Palette generator →