#28339C#28339C

#28339C is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.7% C 0.169 H 271.2°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#28339C
RGB	rgb(40, 51, 156)
HSL	hsl(234, 59%, 38%)
HSV	hsv(234, 74%, 61%)
CMYK	cmyk(74.4%, 67.3%, 0%, 38.8%)
CIE-LAB	lab(27.35, 32.80, -58.27)
CIE-LCH	lch(27.35, 66.87, 299.38°)
OKLab	oklab(38.7% 0.0035 -0.1685)
OKLCH	oklch(38.7% 0.169 271.2)
XYZ	xyz(8.0576, 5.2182, 32.0286)
Luminance	0.0522 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28339C #9C9128

analogous

#286D9C #28339C #57289C

triadic

#28339C #9C2833 #339C28

tetradic

#28339C #9C286D #9C9128 #289C57

square

#28339C #9C286D #9C9128 #289C57

split-complementary

#28339C #9C5728 #6D9C28

monochromatic

#0F133B #1C236B #28339C #3644CB #6771D8

Accessibility & contrast

On white

10.27

#28339C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#28339C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28339C

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28339C	#FFFFFF	#000000	##FFFFFF
##28339C	1.00	10.27	2.04	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469F

Deuteranopia (green-blind)

#003B9A

Tritanopia (blue-blind)

#004F63

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #28339c;
/* rgb */ color: rgb(40, 51, 156);
/* oklch */ color: oklch(38.7% 0.169 271.2);

Tailwind

colors: {
  custom: {
    50: '#746bba',
    500: '#28339c',
    950: '#000000',
  },
}

SCSS

$custom: #28339c;
$custom-light: #746bba;
$custom-dark: #000000;

JSON

{
  "hex": "#28339c",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 156
  },
  "hsl": {
    "h": 234.31,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.38696,
    "c": 0.16854,
    "h": 271.2
  },
  "luminance": 0.05219
}

Semantic roles & 50–950 ramp

primary

#28339C

secondary

#BEB562

accent

#D345E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #28339C

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

Preview Lab → · Contrast checker → · Palette generator →