#28289A#28289A

#28289A is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.7% C 0.178 H 273.3°. Best body text is #FFFFFF at 11.29:1 contrast (WCAG AA passes).

Color values

HEX	#28289A
RGB	rgb(40, 40, 154)
HSL	hsl(240, 59%, 38%)
HSV	hsv(240, 74%, 60%)
CMYK	cmyk(74%, 74%, 0%, 39.6%)
CIE-LAB	lab(24.64, 38.94, -61.50)
CIE-LCH	lch(24.64, 72.79, 302.34°)
OKLab	oklab(36.69% 0.0101 -0.1779)
OKLCH	oklch(36.69% 0.178 273.3)
XYZ	xyz(7.4646, 4.3010, 31.0024)
Luminance	0.0430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28289A #9A9A28

analogous

#28619A #28289A #61289A

triadic

#28289A #9A2828 #289A28

tetradic

#28289A #9A2861 #9A9A28 #289A61

square

#28289A #9A2861 #9A9A28 #289A61

split-complementary

#28289A #9A6128 #619A28

monochromatic

#0F0F39 #1B1B69 #28289A #3535CA #6565D7

Accessibility & contrast

On white

11.29

#28289A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#28289A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28289A

11.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28289A	#FFFFFF	#000000	##FFFFFF
##28289A	1.00	11.29	1.86	11.29
#FFFFFF	11.29	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00409D

Deuteranopia (green-blind)

#003598

Tritanopia (blue-blind)

#00495E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #28289a;
/* rgb */ color: rgb(40, 40, 154);
/* oklch */ color: oklch(36.7% 0.178 273.3);

Tailwind

colors: {
  custom: {
    50: '#7563b9',
    500: '#28289a',
    950: '#000000',
  },
}

SCSS

$custom: #28289a;
$custom-light: #7563b9;
$custom-dark: #000000;

JSON

{
  "hex": "#28289a",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 154
  },
  "hsl": {
    "h": 240,
    "s": 58.763,
    "l": 38.039
  },
  "oklch": {
    "l": 0.36685,
    "c": 0.17821,
    "h": 273.3
  },
  "luminance": 0.04302
}

Semantic roles & 50–950 ramp

primary

#28289A

secondary

#BDBD61

accent

#E246E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #28289A

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

Preview Lab → · Contrast checker → · Palette generator →