#28289E#28289E

#28289E is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.1% C 0.183 H 272.9°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#28289E
RGB	rgb(40, 40, 158)
HSL	hsl(240, 60%, 39%)
HSV	hsv(240, 75%, 62%)
CMYK	cmyk(74.7%, 74.7%, 0%, 38%)
CIE-LAB	lab(25.07, 40.31, -63.25)
CIE-LCH	lch(25.07, 75.00, 302.51°)
OKLab	oklab(37.11% 0.0094 -0.183)
OKLCH	oklch(37.11% 0.183 272.9)
XYZ	xyz(7.8034, 4.4365, 32.7862)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28289E #9E9E28

analogous

#28639E #28289E #63289E

triadic

#28289E #9E2828 #289E28

tetradic

#28289E #9E2863 #9E9E28 #289E63

square

#28289E #9E2863 #9E9E28 #289E63

split-complementary

#28289E #9E6328 #639E28

monochromatic

#0F0F3C #1C1C6D #28289E #3737CC #6868D9

Accessibility & contrast

On white

11.13

#28289E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#28289E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28289E

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28289E	#FFFFFF	#000000	##FFFFFF
##28289E	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A1

Deuteranopia (green-blind)

#00369C

Tritanopia (blue-blind)

#004A61

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #28289e;
/* rgb */ color: rgb(40, 40, 158);
/* oklch */ color: oklch(37.1% 0.183 272.9);

Tailwind

colors: {
  custom: {
    50: '#7663bc',
    500: '#28289e',
    950: '#000000',
  },
}

SCSS

$custom: #28289e;
$custom-light: #7663bc;
$custom-dark: #000000;

JSON

{
  "hex": "#28289e",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 158
  },
  "hsl": {
    "h": 240,
    "s": 59.596,
    "l": 38.824
  },
  "oklch": {
    "l": 0.37112,
    "c": 0.18326,
    "h": 272.9
  },
  "luminance": 0.04437
}

Semantic roles & 50–950 ramp

primary

#28289E

secondary

#BFBF63

accent

#E345E3

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #28289E

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

Preview Lab → · Contrast checker → · Palette generator →