#287BC9#287BC9

#287BC9 is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.3% C 0.143 H 250.9°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#287BC9
RGB	rgb(40, 123, 201)
HSL	hsl(209, 67%, 47%)
HSV	hsv(209, 80%, 79%)
CMYK	cmyk(80.1%, 38.8%, 0%, 21.2%)
CIE-LAB	lab(50.49, 3.15, -47.40)
CIE-LCH	lch(50.49, 47.51, 273.81°)
OKLab	oklab(57.32% -0.0469 -0.1354)
OKLCH	oklch(57.32% 0.143 250.9)
XYZ	xyz(18.4966, 18.8318, 57.9071)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287BC9 #C97628

analogous

#28C9C6 #287BC9 #282BC9

triadic

#287BC9 #C9287B #7BC928

tetradic

#287BC9 #C628C9 #C97628 #2BC928

square

#287BC9 #C628C9 #C97628 #2BC928

split-complementary

#287BC9 #C9282B #C9C628

monochromatic

#143D63 #1E5C96 #287BC9 #5299DD #85B7E7

Accessibility & contrast

On white

4.41

#287BC9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#287BC9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287BC9

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287BC9	#FFFFFF	#000000	##000000
##287BC9	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5680CC

Deuteranopia (green-blind)

#3C72C7

Tritanopia (blue-blind)

#008E98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #287bc9;
/* rgb */ color: rgb(40, 123, 201);
/* oklch */ color: oklch(57.3% 0.143 250.9);

Tailwind

colors: {
  custom: {
    50: '#7ba0da',
    500: '#287bc9',
    950: '#000000',
  },
}

SCSS

$custom: #287bc9;
$custom-light: #7ba0da;
$custom-dark: #000000;

JSON

{
  "hex": "#287bc9",
  "rgb": {
    "r": 40,
    "g": 123,
    "b": 201
  },
  "hsl": {
    "h": 209.068,
    "s": 66.805,
    "l": 47.255
  },
  "oklch": {
    "l": 0.5732,
    "c": 0.14326,
    "h": 250.9
  },
  "luminance": 0.18834
}

Semantic roles & 50–950 ramp

primary

#287BC9

secondary

#D0A57D

accent

#913EEA

background

#F8F9FD

surface

#EFF2FB

border

#CACCD4

text

#0B0E15

muted

#7C7E83

Preview Lab

Preview with #287BC9

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

Preview Lab → · Contrast checker → · Palette generator →