#287AB0#287AB0

#287AB0 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.6% C 0.114 H 242.2°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#287AB0
RGB	rgb(40, 122, 176)
HSL	hsl(204, 63%, 42%)
HSV	hsv(204, 77%, 69%)
CMYK	cmyk(77.3%, 30.7%, 0%, 31%)
CIE-LAB	lab(48.89, -5.53, -35.56)
CIE-LCH	lch(48.89, 35.99, 261.16°)
OKLab	oklab(55.63% -0.053 -0.1008)
OKLCH	oklch(55.63% 0.114 242.2)
XYZ	xyz(15.6680, 17.5029, 43.6185)
Luminance	0.1751 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287AB0 #B05E28

analogous

#28B0A2 #287AB0 #2836B0

triadic

#287AB0 #B0287A #7AB028

tetradic

#287AB0 #A228B0 #B05E28 #36B028

square

#287AB0 #A228B0 #B05E28 #36B028

split-complementary

#287AB0 #B02836 #B0A228

monochromatic

#11354C #1D577E #287AB0 #419AD4 #73B4DF

Accessibility & contrast

On white

4.67

#287AB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#287AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287AB0

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287AB0	#FFFFFF	#000000	##FFFFFF
##287AB0	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#617BB2

Deuteranopia (green-blind)

#4E6EAF

Tritanopia (blue-blind)

#00878D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #287ab0;
/* rgb */ color: rgb(40, 122, 176);
/* oklch */ color: oklch(55.6% 0.114 242.2);

Tailwind

colors: {
  custom: {
    50: '#76a0c8',
    500: '#287ab0',
    950: '#000000',
  },
}

SCSS

$custom: #287ab0;
$custom-light: #76a0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#287ab0",
  "rgb": {
    "r": 40,
    "g": 122,
    "b": 176
  },
  "hsl": {
    "h": 203.824,
    "s": 62.963,
    "l": 42.353
  },
  "oklch": {
    "l": 0.55633,
    "c": 0.11384,
    "h": 242.2
  },
  "luminance": 0.17505
}

Semantic roles & 50–950 ramp

primary

#287AB0

secondary

#C6916D

accent

#8342E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #287AB0

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

Preview Lab → · Contrast checker → · Palette generator →