#287D9F#287D9F

#287D9F is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.5% C 0.095 H 229.1°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#287D9F
RGB	rgb(40, 125, 159)
HSL	hsl(197, 60%, 39%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(74.8%, 21.4%, 0%, 37.6%)
CIE-LAB	lab(49.03, -13.36, -25.44)
CIE-LCH	lch(49.03, 28.74, 242.29°)
OKLab	oklab(55.49% -0.0619 -0.0714)
OKLCH	oklch(55.49% 0.095 229.1)
XYZ	xyz(14.4642, 17.6199, 35.4328)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287D9F #9F4A28

analogous

#289F86 #287D9F #28429F

triadic

#287D9F #9F287D #7D9F28

tetradic

#287D9F #86289F #9F4A28 #429F28

square

#287D9F #86289F #9F4A28 #429F28

split-complementary

#287D9F #9F2842 #9F8628

monochromatic

#0F303D #1C576E #287D9F #37A2CD #68B9D9

Accessibility & contrast

On white

4.64

#287D9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#287D9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287D9F

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287D9F	#FFFFFF	#000000	##FFFFFF
##287D9F	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7BA1

Deuteranopia (green-blind)

#5B6F9F

Tritanopia (blue-blind)

#008788

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #287d9f;
/* rgb */ color: rgb(40, 125, 159);
/* oklch */ color: oklch(55.5% 0.095 229.1);

Tailwind

colors: {
  custom: {
    50: '#73a2bb',
    500: '#287d9f',
    950: '#000000',
  },
}

SCSS

$custom: #287d9f;
$custom-light: #73a2bb;
$custom-dark: #000000;

JSON

{
  "hex": "#287d9f",
  "rgb": {
    "r": 40,
    "g": 125,
    "b": 159
  },
  "hsl": {
    "h": 197.143,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.55491,
    "c": 0.0945,
    "h": 229.1
  },
  "luminance": 0.17622
}

Semantic roles & 50–950 ramp

primary

#287D9F

secondary

#BF7E64

accent

#7245E3

background

#F7FAFB

surface

#EDF3F6

border

#C8CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #287D9F

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

Preview Lab → · Contrast checker → · Palette generator →