#287DAB#287DAB

#287DAB is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.1% C 0.106 H 237.2°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#287DAB
RGB	rgb(40, 125, 171)
HSL	hsl(201, 62%, 41%)
HSV	hsv(201, 77%, 67%)
CMYK	cmyk(76.6%, 26.9%, 0%, 32.9%)
CIE-LAB	lab(49.56, -9.11, -31.60)
CIE-LCH	lch(49.56, 32.88, 253.93°)
OKLab	oklab(56.09% -0.0575 -0.0892)
OKLCH	oklch(56.09% 0.106 237.2)
XYZ	xyz(15.5565, 18.0568, 41.1856)
Luminance	0.1806 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287DAB #AB5628

analogous

#28AB98 #287DAB #283CAB

triadic

#287DAB #AB287D #7DAB28

tetradic

#287DAB #9828AB #AB5628 #3CAB28

square

#287DAB #9828AB #AB5628 #3CAB28

split-complementary

#287DAB #AB283C #AB9828

monochromatic

#113448 #1C5979 #287DAB #3E9ED2 #70B7DE

Accessibility & contrast

On white

4.55

#287DAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#287DAB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #287DAB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287DAB	#FFFFFF	#000000	##000000
##287DAB	1.00	4.55	4.61	4.61
#FFFFFF	4.55	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)

#677DAD

Deuteranopia (green-blind)

#5570AA

Tritanopia (blue-blind)

#00898D

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #287dab;
/* rgb */ color: rgb(40, 125, 171);
/* oklch */ color: oklch(56.1% 0.106 237.2);

Tailwind

colors: {
  custom: {
    50: '#75a2c4',
    500: '#287dab',
    950: '#000000',
  },
}

SCSS

$custom: #287dab;
$custom-light: #75a2c4;
$custom-dark: #000000;

JSON

{
  "hex": "#287dab",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 171
  },
  "hsl": {
    "h": 201.069,
    "s": 62.085,
    "l": 41.373
  },
  "oklch": {
    "l": 0.56092,
    "c": 0.10615,
    "h": 237.2
  },
  "luminance": 0.18059
}

Semantic roles & 50–950 ramp

primary

#287DAB

secondary

#C48A6A

accent

#7C43E5

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F12

muted

#7C7E81

Preview Lab

Preview with #287DAB

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

Preview Lab → · Contrast checker → · Palette generator →