#28308D#28308D

#28308D is a dark, vivid blue. Relative luminance 0.045; OKLCH L 36.7% C 0.152 H 272.5°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#28308D
RGB	rgb(40, 48, 141)
HSL	hsl(235, 56%, 35%)
HSV	hsv(235, 72%, 55%)
CMYK	cmyk(71.6%, 66%, 0%, 44.7%)
CIE-LAB	lab(25.22, 29.26, -52.54)
CIE-LCH	lch(25.22, 60.13, 299.11°)
OKLab	oklab(36.72% 0.0067 -0.1517)
OKLCH	oklch(36.72% 0.152 272.5)
XYZ	xyz(6.7381, 4.4875, 25.7052)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28308D #8D8528

analogous

#28628D #28308D #53288D

triadic

#28308D #8D2830 #308D28

tetradic

#28308D #8D2862 #8D8528 #288D53

square

#28308D #8D2862 #8D8528 #288D53

split-complementary

#28308D #8D5328 #628D28

monochromatic

#0D102E #1A205D #28308D #3640BD #5E67D1

Accessibility & contrast

On white

11.07

#28308D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#28308D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28308D

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28308D	#FFFFFF	#000000	##FFFFFF
##28308D	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004190

Deuteranopia (green-blind)

#00378B

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #28308d;
/* rgb */ color: rgb(40, 48, 141);
/* oklch */ color: oklch(36.7% 0.152 272.5);

Tailwind

colors: {
  custom: {
    50: '#7168af',
    500: '#28308d',
    950: '#000000',
  },
}

SCSS

$custom: #28308d;
$custom-light: #7168af;
$custom-dark: #000000;

JSON

{
  "hex": "#28308d",
  "rgb": {
    "r": 40,
    "g": 48,
    "b": 141
  },
  "hsl": {
    "h": 235.248,
    "s": 55.801,
    "l": 35.49
  },
  "oklch": {
    "l": 0.36717,
    "c": 0.15188,
    "h": 272.5
  },
  "luminance": 0.04488
}

Semantic roles & 50–950 ramp

primary

#28308D

secondary

#B7AF5A

accent

#D349DF

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #28308D

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

Preview Lab → · Contrast checker → · Palette generator →