#28359C#28359C

#28359C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.1% C 0.166 H 270.8°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#28359C
RGB	rgb(40, 53, 156)
HSL	hsl(233, 59%, 38%)
HSV	hsv(233, 74%, 61%)
CMYK	cmyk(74.4%, 66%, 0%, 38.8%)
CIE-LAB	lab(27.84, 31.50, -57.47)
CIE-LCH	lch(27.84, 65.54, 298.73°)
OKLab	oklab(39.05% 0.0022 -0.1661)
OKLCH	oklch(39.05% 0.166 270.8)
XYZ	xyz(8.1469, 5.3968, 32.0584)
Luminance	0.0540 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28359C #9C8F28

analogous

#286F9C #28359C #55289C

triadic

#28359C #9C2835 #359C28

tetradic

#28359C #9C286F #9C8F28 #289C55

square

#28359C #9C286F #9C8F28 #289C55

split-complementary

#28359C #9C5528 #6F9C28

monochromatic

#0F143B #1C246B #28359C #3647CB #6773D8

Accessibility & contrast

On white

10.10

#28359C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#28359C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28359C

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28359C	#FFFFFF	#000000	##FFFFFF
##28359C	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00479F

Deuteranopia (green-blind)

#003C9A

Tritanopia (blue-blind)

#005063

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #28359c;
/* rgb */ color: rgb(40, 53, 156);
/* oklch */ color: oklch(39.1% 0.166 270.8);

Tailwind

colors: {
  custom: {
    50: '#746cba',
    500: '#28359c',
    950: '#000000',
  },
}

SCSS

$custom: #28359c;
$custom-light: #746cba;
$custom-dark: #000000;

JSON

{
  "hex": "#28359c",
  "rgb": {
    "r": 40,
    "g": 53,
    "b": 156
  },
  "hsl": {
    "h": 233.276,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.39053,
    "c": 0.16616,
    "h": 270.8
  },
  "luminance": 0.05398
}

Semantic roles & 50–950 ramp

primary

#28359C

secondary

#BEB462

accent

#D145E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #28359C

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

Preview Lab → · Contrast checker → · Palette generator →