#287DB1#287DB1

#287DB1 is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.4% C 0.113 H 240.5°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#287DB1
RGB	rgb(40, 125, 177)
HSL	hsl(203, 63%, 43%)
HSV	hsv(203, 77%, 69%)
CMYK	cmyk(77.4%, 29.4%, 0%, 30.6%)
CIE-LAB	lab(49.85, -6.93, -34.63)
CIE-LCH	lch(49.85, 35.32, 258.68°)
OKLab	oklab(56.41% -0.0555 -0.098)
OKLCH	oklch(56.41% 0.113 240.5)
XYZ	xyz(16.1414, 18.2907, 44.2662)
Luminance	0.1829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287DB1 #B15C28

analogous

#28B1A1 #287DB1 #2838B1

triadic

#287DB1 #B1287D #7DB128

tetradic

#287DB1 #A128B1 #B15C28 #38B128

square

#287DB1 #A128B1 #B15C28 #38B128

split-complementary

#287DB1 #B12838 #B1A128

monochromatic

#11364D #1D5A7F #287DB1 #429DD4 #74B7E0

Accessibility & contrast

On white

4.51

#287DB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#287DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287DB1

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287DB1	#FFFFFF	#000000	##000000
##287DB1	1.00	4.51	4.66	4.66
#FFFFFF	4.51	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB3

Deuteranopia (green-blind)

#5271B0

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #287db1;
/* rgb */ color: rgb(40, 125, 177);
/* oklch */ color: oklch(56.4% 0.113 240.5);

Tailwind

colors: {
  custom: {
    50: '#76a2c8',
    500: '#287db1',
    950: '#000000',
  },
}

SCSS

$custom: #287db1;
$custom-light: #76a2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#287db1",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 202.774,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.56409,
    "c": 0.11266,
    "h": 240.5
  },
  "luminance": 0.18293
}

Semantic roles & 50–950 ramp

primary

#287DB1

secondary

#C7906E

accent

#8042E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #287DB1

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

Preview Lab → · Contrast checker → · Palette generator →