#28317A#28317A

#28317A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.2% C 0.124 H 273.0°. Best body text is #FFFFFF at 11.60:1 contrast (WCAG AA passes).

Color values

HEX	#28317A
RGB	rgb(40, 49, 122)
HSL	hsl(233, 51%, 32%)
HSV	hsv(233, 67%, 48%)
CMYK	cmyk(67.2%, 59.8%, 0%, 52.2%)
CIE-LAB	lab(23.84, 21.48, -42.87)
CIE-LCH	lch(23.84, 47.95, 296.61°)
OKLab	oklab(35.19% 0.0064 -0.1233)
OKLCH	oklch(35.19% 0.124 273)
XYZ	xyz(5.4851, 4.0524, 18.9017)
Luminance	0.0405 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28317A #7A7128

analogous

#285A7A #28317A #48287A

triadic

#28317A #7A2831 #317A28

tetradic

#28317A #7A285A #7A7128 #287A48

square

#28317A #7A285A #7A7128 #287A48

split-complementary

#28317A #7A4828 #5A7A28

monochromatic

#0A0C1E #191E4C #28317A #3744A8 #5562C7

Accessibility & contrast

On white

11.60

#28317A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#28317A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28317A

11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28317A	#FFFFFF	#000000	##FFFFFF
##28317A	1.00	11.60	1.81	11.60
#FFFFFF	11.60	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C7C

Deuteranopia (green-blind)

#003579

Tritanopia (blue-blind)

#004350

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #28317a;
/* rgb */ color: rgb(40, 49, 122);
/* oklch */ color: oklch(35.2% 0.124 273.0);

Tailwind

colors: {
  custom: {
    50: '#6c69a1',
    500: '#28317a',
    950: '#000000',
  },
}

SCSS

$custom: #28317a;
$custom-light: #6c69a1;
$custom-dark: #000000;

JSON

{
  "hex": "#28317a",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 122
  },
  "hsl": {
    "h": 233.415,
    "s": 50.617,
    "l": 31.765
  },
  "oklch": {
    "l": 0.3519,
    "c": 0.12351,
    "h": 273
  },
  "luminance": 0.04053
}

Semantic roles & 50–950 ramp

primary

#28317A

secondary

#ACA252

accent

#CB4EDA

background

#F6F6FA

surface

#ECEBF3

border

#C7C6CD

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28317A

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

Preview Lab → · Contrast checker → · Palette generator →