#28339A#28339A

#28339A is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.5% C 0.166 H 271.3°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#28339A
RGB	rgb(40, 51, 154)
HSL	hsl(234, 59%, 38%)
HSV	hsv(234, 74%, 60%)
CMYK	cmyk(74%, 66.9%, 0%, 39.6%)
CIE-LAB	lab(27.16, 32.07, -57.36)
CIE-LCH	lch(27.16, 65.72, 299.21°)
OKLab	oklab(38.5% 0.0037 -0.1658)
OKLCH	oklch(38.5% 0.166 271.3)
XYZ	xyz(7.8897, 5.1511, 31.1440)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28339A #9A8F28

analogous

#286C9A #28339A #56289A

triadic

#28339A #9A2833 #339A28

tetradic

#28339A #9A286C #9A8F28 #289A56

square

#28339A #9A286C #9A8F28 #289A56

split-complementary

#28339A #9A5628 #6C9A28

monochromatic

#0F1339 #1B2369 #28339A #3543CA #6570D7

Accessibility & contrast

On white

10.34

#28339A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#28339A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28339A

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28339A	#FFFFFF	#000000	##FFFFFF
##28339A	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469D

Deuteranopia (green-blind)

#003B98

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #28339a;
/* rgb */ color: rgb(40, 51, 154);
/* oklch */ color: oklch(38.5% 0.166 271.3);

Tailwind

colors: {
  custom: {
    50: '#746bb9',
    500: '#28339a',
    950: '#000000',
  },
}

SCSS

$custom: #28339a;
$custom-light: #746bb9;
$custom-dark: #000000;

JSON

{
  "hex": "#28339a",
  "rgb": {
    "r": 40,
    "g": 51,
    "b": 154
  },
  "hsl": {
    "h": 234.211,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.38502,
    "c": 0.16587,
    "h": 271.3
  },
  "luminance": 0.05152
}

Semantic roles & 50–950 ramp

primary

#28339A

secondary

#BDB461

accent

#D346E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#090612

muted

#7B7A81

Preview Lab

Preview with #28339A

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

Preview Lab → · Contrast checker → · Palette generator →