#28289C#28289C

#28289C is a dark, vivid blue. Relative luminance 0.044; OKLCH L 36.9% C 0.181 H 273.1°. Best body text is #FFFFFF at 11.21:1 contrast (WCAG AA passes).

Color values

HEX	#28289C
RGB	rgb(40, 40, 156)
HSL	hsl(240, 59%, 38%)
HSV	hsv(240, 74%, 61%)
CMYK	cmyk(74.4%, 74.4%, 0%, 38.8%)
CIE-LAB	lab(24.85, 39.62, -62.38)
CIE-LCH	lch(24.85, 73.90, 302.42°)
OKLab	oklab(36.9% 0.0098 -0.1805)
OKLCH	oklch(36.9% 0.181 273.1)
XYZ	xyz(7.6326, 4.3682, 31.8869)
Luminance	0.0437 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28289C #9C9C28

analogous

#28629C #28289C #62289C

triadic

#28289C #9C2828 #289C28

tetradic

#28289C #9C2862 #9C9C28 #289C62

square

#28289C #9C2862 #9C9C28 #289C62

split-complementary

#28289C #9C6228 #629C28

monochromatic

#0F0F3B #1C1C6B #28289C #3636CB #6767D8

Accessibility & contrast

On white

11.21

#28289C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#28289C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28289C

11.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28289C	#FFFFFF	#000000	##FFFFFF
##28289C	1.00	11.21	1.87	11.21
#FFFFFF	11.21	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00419F

Deuteranopia (green-blind)

#00359A

Tritanopia (blue-blind)

#004960

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #28289c;
/* rgb */ color: rgb(40, 40, 156);
/* oklch */ color: oklch(36.9% 0.181 273.1);

Tailwind

colors: {
  custom: {
    50: '#7563ba',
    500: '#28289c',
    950: '#000000',
  },
}

SCSS

$custom: #28289c;
$custom-light: #7563ba;
$custom-dark: #000000;

JSON

{
  "hex": "#28289c",
  "rgb": {
    "r": 40,
    "g": 40,
    "b": 156
  },
  "hsl": {
    "h": 240,
    "s": 59.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.36898,
    "c": 0.18075,
    "h": 273.1
  },
  "luminance": 0.04369
}

Semantic roles & 50–950 ramp

primary

#28289C

secondary

#BEBE62

accent

#E245E2

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #28289C

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

Preview Lab → · Contrast checker → · Palette generator →