#287D9E#287D9E

#287D9E is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.4% C 0.094 H 228.3°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#287D9E
RGB	rgb(40, 125, 158)
HSL	hsl(197, 60%, 39%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(74.7%, 20.9%, 0%, 38%)
CIE-LAB	lab(48.99, -13.71, -24.92)
CIE-LCH	lch(48.99, 28.45, 241.18°)
OKLab	oklab(55.44% -0.0622 -0.0699)
OKLCH	oklch(55.44% 0.094 228.3)
XYZ	xyz(14.3777, 17.5853, 34.9777)
Luminance	0.1759 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287D9E #9E4928

analogous

#289E84 #287D9E #28429E

triadic

#287D9E #9E287D #7D9E28

tetradic

#287D9E #84289E #9E4928 #429E28

square

#287D9E #84289E #9E4928 #429E28

split-complementary

#287D9E #9E2842 #9E8428

monochromatic

#0F303C #1C566D #287D9E #37A3CC #68B9D9

Accessibility & contrast

On white

4.65

#287D9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#287D9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287D9E

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287D9E	#FFFFFF	#000000	##FFFFFF
##287D9E	1.00	4.65	4.52	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7BA0

Deuteranopia (green-blind)

#5C6F9E

Tritanopia (blue-blind)

#008688

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #287d9e;
/* rgb */ color: rgb(40, 125, 158);
/* oklch */ color: oklch(55.4% 0.094 228.3);

Tailwind

colors: {
  custom: {
    50: '#73a2ba',
    500: '#287d9e',
    950: '#000000',
  },
}

SCSS

$custom: #287d9e;
$custom-light: #73a2ba;
$custom-dark: #000000;

JSON

{
  "hex": "#287d9e",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 158
  },
  "hsl": {
    "h": 196.78,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.55443,
    "c": 0.09363,
    "h": 228.3
  },
  "luminance": 0.17587
}

Semantic roles & 50–950 ramp

primary

#287D9E

secondary

#BF7D63

accent

#7145E3

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #287D9E

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

Preview Lab → · Contrast checker → · Palette generator →