#288CA0#288CA0

#288CA0 is a mid, moderate cyan. Relative luminance 0.217; OKLCH L 59.3% C 0.093 H 214.3°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#288CA0
RGB	rgb(40, 140, 160)
HSL	hsl(190, 60%, 39%)
HSV	hsv(190, 75%, 63%)
CMYK	cmyk(75%, 12.5%, 0%, 37.3%)
CIE-LAB	lab(53.75, -21.20, -18.76)
CIE-LCH	lch(53.75, 28.31, 221.51°)
OKLab	oklab(59.29% -0.0768 -0.0523)
OKLCH	oklch(59.29% 0.093 214.3)
XYZ	xyz(16.5956, 21.7434, 36.5731)
Luminance	0.2175 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CA0 #A03C28

analogous

#28A078 #288CA0 #2850A0

triadic

#288CA0 #A0288C #8CA028

tetradic

#288CA0 #7828A0 #A03C28 #50A028

square

#288CA0 #7828A0 #A03C28 #50A028

split-complementary

#288CA0 #A02850 #A07828

monochromatic

#10363E #1C616F #288CA0 #38B4CD #69C7D9

Accessibility & contrast

On white

3.93

#288CA0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#288CA0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CA0

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CA0	#FFFFFF	#000000	##000000
##288CA0	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E87A1

Deuteranopia (green-blind)

#6D7BA0

Tritanopia (blue-blind)

#009492

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #288ca0;
/* rgb */ color: rgb(40, 140, 160);
/* oklch */ color: oklch(59.3% 0.093 214.3);

Tailwind

colors: {
  custom: {
    50: '#75aebc',
    500: '#288ca0',
    950: '#000000',
  },
}

SCSS

$custom: #288ca0;
$custom-light: #75aebc;
$custom-dark: #000000;

JSON

{
  "hex": "#288ca0",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 160
  },
  "hsl": {
    "h": 190,
    "s": 60,
    "l": 39.216
  },
  "oklch": {
    "l": 0.59294,
    "c": 0.09289,
    "h": 214.3
  },
  "luminance": 0.21745
}

Semantic roles & 50–950 ramp

primary

#288CA0

secondary

#C07364

accent

#5F45E3

background

#F7FAFB

surface

#EEF4F6

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288CA0

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

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