#28288D#28288D

#28288D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.3% C 0.161 H 274.4°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#28288D
RGB	rgb(40, 40, 141)
HSL	hsl(240, 56%, 35%)
HSV	hsv(240, 72%, 55%)
CMYK	cmyk(71.6%, 71.6%, 0%, 44.7%)
CIE-LAB	lab(23.31, 34.41, -55.68)
CIE-LCH	lch(23.31, 65.45, 301.71°)
OKLab	oklab(35.33% 0.0123 -0.1609)
OKLCH	oklch(35.33% 0.161 274.4)
XYZ	xyz(6.4400, 3.8912, 25.6058)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28288D #8D8D28

analogous

#285A8D #28288D #5A288D

triadic

#28288D #8D2828 #288D28

tetradic

#28288D #8D285A #8D8D28 #288D5A

square

#28288D #8D285A #8D8D28 #288D5A

split-complementary

#28288D #8D5A28 #5A8D28

monochromatic

#0D0D2E #1A1A5D #28288D #3636BD #5E5ED1

Accessibility & contrast

On white

11.81

#28288D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#28288D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28288D

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28288D	#FFFFFF	#000000	##FFFFFF
##28288D	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C90

Deuteranopia (green-blind)

#00338B

Tritanopia (blue-blind)

#004457

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28288d;
/* rgb */ color: rgb(40, 40, 141);
/* oklch */ color: oklch(35.3% 0.161 274.4);

Tailwind

colors: {
  custom: {
    50: '#7163af',
    500: '#28288d',
    950: '#000000',
  },
}

SCSS

$custom: #28288d;
$custom-light: #7163af;
$custom-dark: #000000;

JSON

{
  "hex": "#28288d",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 141
  },
  "hsl": {
    "h": 240,
    "s": 55.801,
    "l": 35.49
  },
  "oklch": {
    "l": 0.35329,
    "c": 0.1614,
    "h": 274.4
  },
  "luminance": 0.03892
}

Semantic roles & 50–950 ramp

primary

#28288D

secondary

#B7B75A

accent

#DF49DF

background

#F7F5FA

surface

#EDEAF5

border

#C8C6CF

text

#090511

muted

#7B7980

Preview Lab

Preview with #28288D

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

Preview Lab → · Contrast checker → · Palette generator →