#287BC5#287BC5

#287BC5 is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.1% C 0.138 H 249.7°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#287BC5
RGB	rgb(40, 123, 197)
HSL	hsl(208, 66%, 46%)
HSV	hsv(208, 80%, 77%)
CMYK	cmyk(79.7%, 37.6%, 0%, 22.7%)
CIE-LAB	lab(50.27, 1.65, -45.47)
CIE-LCH	lch(50.27, 45.50, 272.08°)
OKLab	oklab(57.08% -0.0479 -0.1297)
OKLCH	oklch(57.08% 0.138 249.7)
XYZ	xyz(18.0322, 18.6461, 55.4612)
Luminance	0.1865 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287BC5 #C57228

analogous

#28C5C1 #287BC5 #282DC5

triadic

#287BC5 #C5287B #7BC528

tetradic

#287BC5 #C128C5 #C57228 #2DC528

square

#287BC5 #C128C5 #C57228 #2DC528

split-complementary

#287BC5 #C5282D #C5C128

monochromatic

#133B5F #1E5B92 #287BC5 #4F99DB #82B7E6

Accessibility & contrast

On white

4.44

#287BC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#287BC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287BC5

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287BC5	#FFFFFF	#000000	##000000
##287BC5	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#587FC8

Deuteranopia (green-blind)

#4071C4

Tritanopia (blue-blind)

#008D96

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #287bc5;
/* rgb */ color: rgb(40, 123, 197);
/* oklch */ color: oklch(57.1% 0.138 249.7);

Tailwind

colors: {
  custom: {
    50: '#7aa0d7',
    500: '#287bc5',
    950: '#000000',
  },
}

SCSS

$custom: #287bc5;
$custom-light: #7aa0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#287bc5",
  "rgb": {
    "r": 40,
    "g": 123,
    "b": 197
  },
  "hsl": {
    "h": 208.28,
    "s": 66.245,
    "l": 46.471
  },
  "oklch": {
    "l": 0.57077,
    "c": 0.13826,
    "h": 249.7
  },
  "luminance": 0.18648
}

Semantic roles & 50–950 ramp

primary

#287BC5

secondary

#CEA27A

accent

#8F3FE9

background

#F8F9FD

surface

#EFF2FA

border

#CACCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #287BC5

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

Preview Lab → · Contrast checker → · Palette generator →