#287DB0#287DB0

#287DB0 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.4% C 0.112 H 239.9°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#287DB0
RGB	rgb(40, 125, 176)
HSL	hsl(203, 63%, 42%)
HSV	hsv(203, 77%, 69%)
CMYK	cmyk(77.3%, 29%, 0%, 31%)
CIE-LAB	lab(49.80, -7.30, -34.13)
CIE-LCH	lch(49.80, 34.90, 257.93°)
OKLab	oklab(56.36% -0.0559 -0.0965)
OKLCH	oklch(56.36% 0.112 239.9)
XYZ	xyz(16.0421, 18.2510, 43.7432)
Luminance	0.1825 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287DB0 #B05B28

analogous

#28B09F #287DB0 #2839B0

triadic

#287DB0 #B0287D #7DB028

tetradic

#287DB0 #9F28B0 #B05B28 #39B028

square

#287DB0 #9F28B0 #B05B28 #39B028

split-complementary

#287DB0 #B02839 #B09F28

monochromatic

#11364C #1D5A7E #287DB0 #419DD4 #73B7DF

Accessibility & contrast

On white

4.52

#287DB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#287DB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287DB0

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287DB0	#FFFFFF	#000000	##000000
##287DB0	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657DB2

Deuteranopia (green-blind)

#5271AF

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #287db0;
/* rgb */ color: rgb(40, 125, 176);
/* oklch */ color: oklch(56.4% 0.112 239.9);

Tailwind

colors: {
  custom: {
    50: '#76a2c8',
    500: '#287db0',
    950: '#000000',
  },
}

SCSS

$custom: #287db0;
$custom-light: #76a2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#287db0",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 176
  },
  "hsl": {
    "h": 202.5,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.56355,
    "c": 0.11154,
    "h": 239.9
  },
  "luminance": 0.18253
}

Semantic roles & 50–950 ramp

primary

#287DB0

secondary

#C68F6D

accent

#7F42E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #287DB0

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

Preview Lab → · Contrast checker → · Palette generator →