#287CB1#287CB1

#287CB1 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.2% C 0.113 H 241.2°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#287CB1
RGB	rgb(40, 124, 177)
HSL	hsl(203, 63%, 43%)
HSV	hsv(203, 77%, 69%)
CMYK	cmyk(77.4%, 29.9%, 0%, 30.6%)
CIE-LAB	lab(49.54, -6.35, -35.11)
CIE-LCH	lch(49.54, 35.68, 259.75°)
OKLab	oklab(56.17% -0.0546 -0.0994)
OKLCH	oklch(56.17% 0.113 241.2)
XYZ	xyz(16.0154, 18.0388, 44.2242)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287CB1 #B15D28

analogous

#28B1A2 #287CB1 #2837B1

triadic

#287CB1 #B1287C #7CB128

tetradic

#287CB1 #A228B1 #B15D28 #37B128

square

#287CB1 #A228B1 #B15D28 #37B128

split-complementary

#287CB1 #B12837 #B1A228

monochromatic

#11364D #1D597F #287CB1 #429CD4 #74B6E0

Accessibility & contrast

On white

4.56

#287CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#287CB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287CB1

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287CB1	#FFFFFF	#000000	##000000
##287CB1	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB3

Deuteranopia (green-blind)

#5070B0

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #287cb1;
/* rgb */ color: rgb(40, 124, 177);
/* oklch */ color: oklch(56.2% 0.113 241.2);

Tailwind

colors: {
  custom: {
    50: '#76a1c8',
    500: '#287cb1',
    950: '#000000',
  },
}

SCSS

$custom: #287cb1;
$custom-light: #76a1c8;
$custom-dark: #000000;

JSON

{
  "hex": "#287cb1",
  "rgb": {
    "r": 40,
    "g": 124,
    "b": 177
  },
  "hsl": {
    "h": 203.212,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.56168,
    "c": 0.11342,
    "h": 241.2
  },
  "luminance": 0.18041
}

Semantic roles & 50–950 ramp

primary

#287CB1

secondary

#C7906E

accent

#8142E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #287CB1

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

Preview Lab → · Contrast checker → · Palette generator →