#28348B#28348B

#28348B is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.3% C 0.144 H 271.5°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#28348B
RGB	rgb(40, 52, 139)
HSL	hsl(233, 55%, 35%)
HSV	hsv(233, 71%, 55%)
CMYK	cmyk(71.2%, 62.6%, 0%, 45.5%)
CIE-LAB	lab(26.07, 25.84, -49.91)
CIE-LCH	lch(26.07, 56.20, 297.37°)
OKLab	oklab(37.29% 0.0037 -0.144)
OKLCH	oklch(37.29% 0.144 271.5)
XYZ	xyz(6.7617, 4.7705, 24.9856)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28348B #8B7F28

analogous

#28668B #28348B #4D288B

triadic

#28348B #8B2834 #348B28

tetradic

#28348B #8B2866 #8B7F28 #288B4D

square

#28348B #8B2866 #8B7F28 #288B4D

split-complementary

#28348B #8B4D28 #668B28

monochromatic

#0D102C #1A225B #28348B #3646BB #5D6BD0

Accessibility & contrast

On white

10.75

#28348B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#28348B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28348B

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28348B	#FFFFFF	#000000	##FFFFFF
##28348B	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#004A5A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #28348b;
/* rgb */ color: rgb(40, 52, 139);
/* oklch */ color: oklch(37.3% 0.144 271.5);

Tailwind

colors: {
  custom: {
    50: '#706bae',
    500: '#28348b',
    950: '#000000',
  },
}

SCSS

$custom: #28348b;
$custom-light: #706bae;
$custom-dark: #000000;

JSON

{
  "hex": "#28348b",
  "rgb": {
    "r": 40,
    "g": 52,
    "b": 139
  },
  "hsl": {
    "h": 232.727,
    "s": 55.307,
    "l": 35.098
  },
  "oklch": {
    "l": 0.37287,
    "c": 0.14403,
    "h": 271.5
  },
  "luminance": 0.04771
}

Semantic roles & 50–950 ramp

primary

#28348B

secondary

#B6AA59

accent

#CD49DF

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #28348B

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

Preview Lab → · Contrast checker → · Palette generator →