#287C9B#287C9B

#287C9B is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.1% C 0.091 H 227.0°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#287C9B
RGB	rgb(40, 124, 155)
HSL	hsl(196, 59%, 38%)
HSV	hsv(196, 74%, 61%)
CMYK	cmyk(74.2%, 20%, 0%, 39.2%)
CIE-LAB	lab(48.55, -14.20, -23.85)
CIE-LCH	lch(48.55, 27.75, 239.24°)
OKLab	oklab(55.05% -0.0624 -0.0669)
OKLCH	oklch(55.05% 0.091 227)
XYZ	xyz(13.9967, 17.2313, 33.5923)
Luminance	0.1723 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287C9B #9B4728

analogous

#289B80 #287C9B #28429B

triadic

#287C9B #9B287C #7C9B28

tetradic

#287C9B #80289B #9B4728 #429B28

square

#287C9B #80289B #9B4728 #429B28

split-complementary

#287C9B #9B2842 #9B8028

monochromatic

#0F2E3A #1B556A #287C9B #35A3CB #66B9D7

Accessibility & contrast

On white

4.72

#287C9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#287C9B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #287C9B

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287C9B	#FFFFFF	#000000	##FFFFFF
##287C9B	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7A9D

Deuteranopia (green-blind)

#5C6E9B

Tritanopia (blue-blind)

#008586

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #287c9b;
/* rgb */ color: rgb(40, 124, 155);
/* oklch */ color: oklch(55.1% 0.091 227.0);

Tailwind

colors: {
  custom: {
    50: '#73a2b8',
    500: '#287c9b',
    950: '#000000',
  },
}

SCSS

$custom: #287c9b;
$custom-light: #73a2b8;
$custom-dark: #000000;

JSON

{
  "hex": "#287c9b",
  "rgb": {
    "r": 40,
    "g": 124,
    "b": 155
  },
  "hsl": {
    "h": 196.174,
    "s": 58.974,
    "l": 38.235
  },
  "oklch": {
    "l": 0.55051,
    "c": 0.09144,
    "h": 227
  },
  "luminance": 0.17233
}

Semantic roles & 50–950 ramp

primary

#287C9B

secondary

#BD7A61

accent

#7046E2

background

#F7F9FB

surface

#EDF2F6

border

#C8CCD0

text

#090F11

muted

#7B7E80

Preview Lab

Preview with #287C9B

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

Preview Lab → · Contrast checker → · Palette generator →