#28239A#28239A

#28239A is a dark, vivid blue. Relative luminance 0.040; OKLCH L 36.0% C 0.183 H 273.9°. Best body text is #FFFFFF at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#28239A
RGB	rgb(40, 35, 154)
HSL	hsl(243, 63%, 37%)
HSV	hsv(243, 77%, 60%)
CMYK	cmyk(74%, 77.3%, 0%, 39.6%)
CIE-LAB	lab(23.62, 41.81, -63.18)
CIE-LCH	lch(23.62, 75.77, 303.49°)
OKLab	oklab(35.96% 0.0126 -0.1828)
OKLCH	oklch(35.96% 0.183 273.9)
XYZ	xyz(7.3069, 3.9855, 30.9498)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28239A #959A23

analogous

#235A9A #28239A #64239A

triadic

#28239A #9A2823 #239A28

tetradic

#28239A #9A235A #959A23 #239A64

square

#28239A #9A235A #959A23 #239A64

split-complementary

#28239A #9A6423 #5A9A23

monochromatic

#0E0C36 #1B1868 #28239A #352ECC #625DDA

Accessibility & contrast

On white

11.68

#28239A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#28239A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28239A

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28239A	#FFFFFF	#000000	##FFFFFF
##28239A	1.00	11.68	1.80	11.68
#FFFFFF	11.68	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E9D

Deuteranopia (green-blind)

#003398

Tritanopia (blue-blind)

#00465D

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #28239a;
/* rgb */ color: rgb(40, 35, 154);
/* oklch */ color: oklch(36.0% 0.183 273.9);

Tailwind

colors: {
  custom: {
    50: '#7560b9',
    500: '#28239a',
    950: '#000000',
  },
}

SCSS

$custom: #28239a;
$custom-light: #7560b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28239a",
  "rgb": {
    "r": 40,
    "g": 35,
    "b": 154
  },
  "hsl": {
    "h": 242.521,
    "s": 62.963,
    "l": 37.059
  },
  "oklch": {
    "l": 0.35963,
    "c": 0.18321,
    "h": 273.9
  },
  "luminance": 0.03986
}

Semantic roles & 50–950 ramp

primary

#28239A

secondary

#BBBF5A

accent

#E642DF

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0512

muted

#7C7981

Preview Lab

Preview with #28239A

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

Preview Lab → · Contrast checker → · Palette generator →