#28317F#28317F

#28317F is a dark, vivid blue. Relative luminance 0.042; OKLCH L 35.6% C 0.131 H 272.8°. Best body text is #FFFFFF at 11.44:1 contrast (WCAG AA passes).

Color values

HEX	#28317F
RGB	rgb(40, 49, 127)
HSL	hsl(234, 52%, 33%)
HSV	hsv(234, 69%, 50%)
CMYK	cmyk(68.5%, 61.4%, 0%, 50.2%)
CIE-LAB	lab(24.26, 23.36, -45.36)
CIE-LCH	lch(24.26, 51.03, 297.25°)
OKLab	oklab(35.63% 0.0065 -0.1307)
OKLCH	oklch(35.63% 0.131 272.8)
XYZ	xyz(5.8029, 4.1795, 20.5755)
Luminance	0.0418 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28317F #7F7628

analogous

#285C7F #28317F #4A287F

triadic

#28317F #7F2831 #317F28

tetradic

#28317F #7F285C #7F7628 #287F4A

square

#28317F #7F285C #7F7628 #287F4A

split-complementary

#28317F #7F4A28 #5C7F28

monochromatic

#0B0D22 #191F50 #28317F #3743AE #5763CA

Accessibility & contrast

On white

11.44

#28317F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#28317F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28317F

11.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28317F	#FFFFFF	#000000	##FFFFFF
##28317F	1.00	11.44	1.84	11.44
#FFFFFF	11.44	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E82

Deuteranopia (green-blind)

#00367D

Tritanopia (blue-blind)

#004453

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #28317f;
/* rgb */ color: rgb(40, 49, 127);
/* oklch */ color: oklch(35.6% 0.131 272.8);

Tailwind

colors: {
  custom: {
    50: '#6d69a5',
    500: '#28317f',
    950: '#000000',
  },
}

SCSS

$custom: #28317f;
$custom-light: #6d69a5;
$custom-dark: #000000;

JSON

{
  "hex": "#28317f",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 127
  },
  "hsl": {
    "h": 233.793,
    "s": 52.096,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35626,
    "c": 0.13082,
    "h": 272.8
  },
  "luminance": 0.0418
}

Semantic roles & 50–950 ramp

primary

#28317F

secondary

#AFA654

accent

#CD4CDC

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#08060F

muted

#7B7A7F

Preview Lab

Preview with #28317F

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

Preview Lab → · Contrast checker → · Palette generator →