#287CC5#287CC5

#287CC5 is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.3% C 0.137 H 249.2°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#287CC5
RGB	rgb(40, 124, 197)
HSL	hsl(208, 66%, 46%)
HSV	hsv(208, 80%, 77%)
CMYK	cmyk(79.7%, 37.1%, 0%, 22.7%)
CIE-LAB	lab(50.56, 1.05, -45.00)
CIE-LCH	lch(50.56, 45.01, 271.33°)
OKLab	oklab(57.31% -0.0488 -0.1283)
OKLCH	oklch(57.31% 0.137 249.2)
XYZ	xyz(18.1569, 18.8954, 55.5027)
Luminance	0.1890 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287CC5 #C57128

analogous

#28C5C0 #287CC5 #282EC5

triadic

#287CC5 #C5287C #7CC528

tetradic

#287CC5 #C028C5 #C57128 #2EC528

square

#287CC5 #C028C5 #C57128 #2EC528

split-complementary

#287CC5 #C5282E #C5C028

monochromatic

#133C5F #1E5C92 #287CC5 #4F9ADB #82B7E6

Accessibility & contrast

On white

4.39

#287CC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#287CC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287CC5

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287CC5	#FFFFFF	#000000	##000000
##287CC5	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5980C8

Deuteranopia (green-blind)

#4272C4

Tritanopia (blue-blind)

#008D97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #287cc5;
/* rgb */ color: rgb(40, 124, 197);
/* oklch */ color: oklch(57.3% 0.137 249.2);

Tailwind

colors: {
  custom: {
    50: '#7aa1d7',
    500: '#287cc5',
    950: '#000000',
  },
}

SCSS

$custom: #287cc5;
$custom-light: #7aa1d7;
$custom-dark: #000000;

JSON

{
  "hex": "#287cc5",
  "rgb": {
    "r": 40,
    "g": 124,
    "b": 197
  },
  "hsl": {
    "h": 207.898,
    "s": 66.245,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57307,
    "c": 0.13726,
    "h": 249.2
  },
  "luminance": 0.18898
}

Semantic roles & 50–950 ramp

primary

#287CC5

secondary

#CEA17A

accent

#8E3FE9

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #287CC5

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

Preview Lab → · Contrast checker → · Palette generator →