#288CA5#288CA5

#288CA5 is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.5% C 0.096 H 218.6°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#288CA5
RGB	rgb(40, 140, 165)
HSL	hsl(192, 61%, 40%)
HSV	hsv(192, 76%, 65%)
CMYK	cmyk(75.8%, 15.2%, 0%, 35.3%)
CIE-LAB	lab(53.94, -19.54, -21.35)
CIE-LCH	lch(53.94, 28.94, 227.53°)
OKLab	oklab(59.51% -0.0747 -0.0596)
OKLCH	oklch(59.51% 0.096 218.6)
XYZ	xyz(17.0418, 21.9219, 38.9232)
Luminance	0.2192 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288CA5 #A54128

analogous

#28A57F #288CA5 #284DA5

triadic

#288CA5 #A5288C #8CA528

tetradic

#288CA5 #7F28A5 #A54128 #4DA528

square

#288CA5 #7F28A5 #A54128 #4DA528

split-complementary

#288CA5 #A5284D #A57F28

monochromatic

#103842 #1C6274 #288CA5 #3BB2CF #6CC5DB

Accessibility & contrast

On white

3.90

#288CA5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#288CA5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288CA5

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288CA5	#FFFFFF	#000000	##000000
##288CA5	1.00	3.90	5.38	5.38
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C88A6

Deuteranopia (green-blind)

#6B7CA5

Tritanopia (blue-blind)

#009494

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #288ca5;
/* rgb */ color: rgb(40, 140, 165);
/* oklch */ color: oklch(59.5% 0.096 218.6);

Tailwind

colors: {
  custom: {
    50: '#75adbf',
    500: '#288ca5',
    950: '#000000',
  },
}

SCSS

$custom: #288ca5;
$custom-light: #75adbf;
$custom-dark: #000000;

JSON

{
  "hex": "#288ca5",
  "rgb": {
    "r": 40,
    "g": 140,
    "b": 165
  },
  "hsl": {
    "h": 192,
    "s": 60.976,
    "l": 40.196
  },
  "oklch": {
    "l": 0.5951,
    "c": 0.0956,
    "h": 218.6
  },
  "luminance": 0.21924
}

Semantic roles & 50–950 ramp

primary

#288CA5

secondary

#C27967

accent

#6444E4

background

#F7FAFB

surface

#EEF4F7

border

#C9CED0

text

#0A1012

muted

#7C7F81

Preview Lab

Preview with #288CA5

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

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