#288399#288399

#288399 is a mid, moderate cyan. Relative luminance 0.190; OKLCH L 56.7% C 0.089 H 217.6°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#288399
RGB	rgb(40, 131, 153)
HSL	hsl(192, 59%, 38%)
HSV	hsv(192, 74%, 60%)
CMYK	cmyk(73.9%, 14.4%, 0%, 40%)
CIE-LAB	lab(50.67, -18.73, -19.43)
CIE-LCH	lch(50.67, 26.98, 226.04°)
OKLab	oklab(56.72% -0.0704 -0.0542)
OKLCH	oklch(56.72% 0.089 217.6)
XYZ	xyz(14.7387, 18.9819, 33.0179)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#288399 #993E28

analogous

#289976 #288399 #284B99

triadic

#288399 #992883 #839928

tetradic

#288399 #762899 #993E28 #4B9928

square

#288399 #762899 #993E28 #4B9928

split-complementary

#288399 #99284B #997628

monochromatic

#0F3038 #1B5968 #288399 #35ADCA #65C0D7

Accessibility & contrast

On white

4.38

#288399 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#288399 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #288399

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##288399	#FFFFFF	#000000	##000000
##288399	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#757F9A

Deuteranopia (green-blind)

#657499

Tritanopia (blue-blind)

#008B8A

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #288399;
/* rgb */ color: rgb(40, 131, 153);
/* oklch */ color: oklch(56.7% 0.089 217.6);

Tailwind

colors: {
  custom: {
    50: '#73a7b7',
    500: '#288399',
    950: '#000000',
  },
}

SCSS

$custom: #288399;
$custom-light: #73a7b7;
$custom-dark: #000000;

JSON

{
  "hex": "#288399",
  "rgb": {
    "r": 40,
    "g": 131,
    "b": 153
  },
  "hsl": {
    "h": 191.681,
    "s": 58.549,
    "l": 37.843
  },
  "oklch": {
    "l": 0.56721,
    "c": 0.08887,
    "h": 217.6
  },
  "luminance": 0.18984
}

Semantic roles & 50–950 ramp

primary

#288399

secondary

#BD7260

accent

#6446E2

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#090F11

muted

#7B7F80

Preview Lab

Preview with #288399

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

Preview Lab → · Contrast checker → · Palette generator →