#28358B#28358B

#28358B is a dark, vivid blue. Relative luminance 0.049; OKLCH L 37.5% C 0.143 H 271.2°. Best body text is #FFFFFF at 10.65:1 contrast (WCAG AA passes).

Color values

HEX	#28358B
RGB	rgb(40, 53, 139)
HSL	hsl(232, 55%, 35%)
HSV	hsv(232, 71%, 55%)
CMYK	cmyk(71.2%, 61.9%, 0%, 45.5%)
CIE-LAB	lab(26.33, 25.16, -49.48)
CIE-LCH	lch(26.33, 55.51, 296.96°)
OKLab	oklab(37.48% 0.0029 -0.1427)
OKLCH	oklch(37.48% 0.143 271.2)
XYZ	xyz(6.8068, 4.8607, 25.0006)
Luminance	0.0486 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28358B #8B7E28

analogous

#28678B #28358B #4C288B

triadic

#28358B #8B2835 #358B28

tetradic

#28358B #8B2867 #8B7E28 #288B4C

square

#28358B #8B2867 #8B7E28 #288B4C

split-complementary

#28358B #8B4C28 #678B28

monochromatic

#0D112C #1A235B #28358B #3647BB #5D6CD0

Accessibility & contrast

On white

10.65

#28358B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#28358B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28358B

10.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28358B	#FFFFFF	#000000	##FFFFFF
##28358B	1.00	10.65	1.97	10.65
#FFFFFF	10.65	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#004B5A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #28358b;
/* rgb */ color: rgb(40, 53, 139);
/* oklch */ color: oklch(37.5% 0.143 271.2);

Tailwind

colors: {
  custom: {
    50: '#706cae',
    500: '#28358b',
    950: '#000000',
  },
}

SCSS

$custom: #28358b;
$custom-light: #706cae;
$custom-dark: #000000;

JSON

{
  "hex": "#28358b",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 139
  },
  "hsl": {
    "h": 232.121,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.37482,
    "c": 0.14274,
    "h": 271.2
  },
  "luminance": 0.04861
}

Semantic roles & 50–950 ramp

primary

#28358B

secondary

#B6AA59

accent

#CB49DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #28358B

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

Preview Lab → · Contrast checker → · Palette generator →