#287B9D#287B9D

#287B9D is a mid, moderate cyan. Relative luminance 0.171; OKLCH L 54.9% C 0.094 H 229.6°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#287B9D
RGB	rgb(40, 123, 157)
HSL	hsl(197, 59%, 39%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(74.5%, 21.7%, 0%, 38.4%)
CIE-LAB	lab(48.32, -12.93, -25.37)
CIE-LCH	lch(48.32, 28.48, 242.99°)
OKLab	oklab(54.9% -0.0606 -0.0712)
OKLCH	oklch(54.9% 0.094 229.6)
XYZ	xyz(14.0414, 17.0497, 34.4426)
Luminance	0.1705 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287B9D #9D4A28

analogous

#289D84 #287B9D #28409D

triadic

#287B9D #9D287B #7B9D28

tetradic

#287B9D #84289D #9D4A28 #409D28

square

#287B9D #84289D #9D4A28 #409D28

split-complementary

#287B9D #9D2840 #9D8428

monochromatic

#0F2F3B #1C556C #287B9D #36A0CC #67B7D8

Accessibility & contrast

On white

4.76

#287B9D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#287B9D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #287B9D

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287B9D	#FFFFFF	#000000	##FFFFFF
##287B9D	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#69799F

Deuteranopia (green-blind)

#5A6E9D

Tritanopia (blue-blind)

#008486

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #287b9d;
/* rgb */ color: rgb(40, 123, 157);
/* oklch */ color: oklch(54.9% 0.094 229.6);

Tailwind

colors: {
  custom: {
    50: '#73a1ba',
    500: '#287b9d',
    950: '#000000',
  },
}

SCSS

$custom: #287b9d;
$custom-light: #73a1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#287b9d",
  "rgb": {
    "r": 40,
    "g": 123,
    "b": 157
  },
  "hsl": {
    "h": 197.436,
    "s": 59.391,
    "l": 38.627
  },
  "oklch": {
    "l": 0.54897,
    "c": 0.09352,
    "h": 229.6
  },
  "luminance": 0.17051
}

Semantic roles & 50–950 ramp

primary

#287B9D

secondary

#BE7D62

accent

#7345E3

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #287B9D

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

Preview Lab → · Contrast checker → · Palette generator →