#28289F#28289F

#28289F is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.2% C 0.185 H 272.9°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#28289F
RGB	rgb(40, 40, 159)
HSL	hsl(240, 60%, 39%)
HSV	hsv(240, 75%, 62%)
CMYK	cmyk(74.8%, 74.8%, 0%, 37.6%)
CIE-LAB	lab(25.17, 40.65, -63.68)
CIE-LCH	lch(25.17, 75.55, 302.55°)
OKLab	oklab(37.22% 0.0093 -0.1843)
OKLCH	oklch(37.22% 0.185 272.9)
XYZ	xyz(7.8898, 4.4711, 33.2414)
Luminance	0.0447 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28289F #9F9F28

analogous

#28649F #28289F #64289F

triadic

#28289F #9F2828 #289F28

tetradic

#28289F #9F2864 #9F9F28 #289F64

square

#28289F #9F2864 #9F9F28 #289F64

split-complementary

#28289F #9F6428 #649F28

monochromatic

#0F0F3D #1C1C6E #28289F #3737CD #6868D9

Accessibility & contrast

On white

11.09

#28289F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#28289F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28289F

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28289F	#FFFFFF	#000000	##FFFFFF
##28289F	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A2

Deuteranopia (green-blind)

#00369D

Tritanopia (blue-blind)

#004A61

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #28289f;
/* rgb */ color: rgb(40, 40, 159);
/* oklch */ color: oklch(37.2% 0.185 272.9);

Tailwind

colors: {
  custom: {
    50: '#7663bd',
    500: '#28289f',
    950: '#000000',
  },
}

SCSS

$custom: #28289f;
$custom-light: #7663bd;
$custom-dark: #000000;

JSON

{
  "hex": "#28289f",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 159
  },
  "hsl": {
    "h": 240,
    "s": 59.799,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37219,
    "c": 0.18451,
    "h": 272.9
  },
  "luminance": 0.04472
}

Semantic roles & 50–950 ramp

primary

#28289F

secondary

#BFBF64

accent

#E345E3

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #28289F

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

Preview Lab → · Contrast checker → · Palette generator →