#28408B#28408B

#28408B is a dark, vivid blue. Relative luminance 0.060; OKLCH L 39.8% C 0.128 H 267.0°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#28408B
RGB	rgb(40, 64, 139)
HSL	hsl(225, 55%, 35%)
HSV	hsv(225, 71%, 55%)
CMYK	cmyk(71.2%, 54%, 0%, 45.5%)
CIE-LAB	lab(29.37, 17.64, -44.56)
CIE-LCH	lch(29.37, 47.92, 291.60°)
OKLab	oklab(39.75% -0.0067 -0.1281)
OKLCH	oklch(39.75% 0.128 267)
XYZ	xyz(7.3671, 5.9813, 25.1873)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28408B #8B7328

analogous

#28718B #28408B #42288B

triadic

#28408B #8B2840 #408B28

tetradic

#28408B #8B2871 #8B7328 #288B42

square

#28408B #8B2871 #8B7328 #288B42

split-complementary

#28408B #8B4228 #718B28

monochromatic

#0D142C #1A2A5B #28408B #3656BB #5D79D0

Accessibility & contrast

On white

9.56

#28408B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#28408B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28408B

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28408B	#FFFFFF	#000000	##FFFFFF
##28408B	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E4A8E

Deuteranopia (green-blind)

#004189

Tritanopia (blue-blind)

#00525F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #28408b;
/* rgb */ color: rgb(40, 64, 139);
/* oklch */ color: oklch(39.8% 0.128 267.0);

Tailwind

colors: {
  custom: {
    50: '#6f74ad',
    500: '#28408b',
    950: '#000000',
  },
}

SCSS

$custom: #28408b;
$custom-light: #6f74ad;
$custom-dark: #000000;

JSON

{
  "hex": "#28408b",
  "rgb": {
    "r": 40,
    "g": 64,
    "b": 139
  },
  "hsl": {
    "h": 225.455,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.39752,
    "c": 0.12826,
    "h": 267
  },
  "luminance": 0.05982
}

Semantic roles & 50–950 ramp

primary

#28408B

secondary

#B69F59

accent

#BA49DF

background

#F7F7FA

surface

#EDEDF4

border

#C8C8CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #28408B

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

Preview Lab → · Contrast checker → · Palette generator →