#287E9F#287E9F

#287E9F is a mid, moderate cyan. Relative luminance 0.179; OKLCH L 55.7% C 0.094 H 228.1°. Best body text is #FFFFFF at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#287E9F
RGB	rgb(40, 126, 159)
HSL	hsl(197, 60%, 39%)
HSV	hsv(197, 75%, 62%)
CMYK	cmyk(74.8%, 20.8%, 0%, 37.6%)
CIE-LAB	lab(49.34, -13.93, -24.96)
CIE-LCH	lch(49.34, 28.58, 240.84°)
OKLab	oklab(55.74% -0.0629 -0.07)
OKLCH	oklch(55.74% 0.094 228.1)
XYZ	xyz(14.5914, 17.8743, 35.4752)
Luminance	0.1788 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#287E9F #9F4928

analogous

#289F85 #287E9F #28429F

triadic

#287E9F #9F287E #7E9F28

tetradic

#287E9F #85289F #9F4928 #429F28

square

#287E9F #85289F #9F4928 #429F28

split-complementary

#287E9F #9F2842 #9F8528

monochromatic

#0F313D #1C576E #287E9F #37A3CD #68BAD9

Accessibility & contrast

On white

4.59

#287E9F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#287E9F on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #287E9F

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##287E9F	#FFFFFF	#000000	##FFFFFF
##287E9F	1.00	4.59	4.58	4.59
#FFFFFF	4.59	1.00	21.00	1.00
#000000	4.58	21.00	1.00	21.00
##FFFFFF	4.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7CA1

Deuteranopia (green-blind)

#5D709F

Tritanopia (blue-blind)

#008789

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #287e9f;
/* rgb */ color: rgb(40, 126, 159);
/* oklch */ color: oklch(55.7% 0.094 228.1);

Tailwind

colors: {
  custom: {
    50: '#73a3bb',
    500: '#287e9f',
    950: '#000000',
  },
}

SCSS

$custom: #287e9f;
$custom-light: #73a3bb;
$custom-dark: #000000;

JSON

{
  "hex": "#287e9f",
  "rgb": {
    "r": 40,
    "g": 126,
    "b": 159
  },
  "hsl": {
    "h": 196.639,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.55741,
    "c": 0.09413,
    "h": 228.1
  },
  "luminance": 0.17876
}

Semantic roles & 50–950 ramp

primary

#287E9F

secondary

#BF7D64

accent

#7145E3

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #287E9F

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

Preview Lab → · Contrast checker → · Palette generator →