#28317D#28317D

#28317D is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.128 H 272.9°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#28317D
RGB	rgb(40, 49, 125)
HSL	hsl(234, 52%, 32%)
HSV	hsv(234, 68%, 49%)
CMYK	cmyk(68%, 60.8%, 0%, 51%)
CIE-LAB	lab(24.09, 22.61, -44.37)
CIE-LCH	lch(24.09, 49.80, 297.00°)
OKLab	oklab(35.45% 0.0065 -0.1277)
OKLCH	oklch(35.45% 0.128 272.9)
XYZ	xyz(5.6738, 4.1279, 19.8958)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#28317D #7D7428

analogous

#285C7D #28317D #4A287D

triadic

#28317D #7D2831 #317D28

tetradic

#28317D #7D285C #7D7428 #287D4A

square

#28317D #7D285C #7D7428 #287D4A

split-complementary

#28317D #7D4A28 #5C7D28

monochromatic

#0A0D20 #191F4F #28317D #3743AB #5663C9

Accessibility & contrast

On white

11.50

#28317D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#28317D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #28317D

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##28317D	#FFFFFF	#000000	##FFFFFF
##28317D	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D80

Deuteranopia (green-blind)

#00367B

Tritanopia (blue-blind)

#004452

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #28317d;
/* rgb */ color: rgb(40, 49, 125);
/* oklch */ color: oklch(35.4% 0.128 272.9);

Tailwind

colors: {
  custom: {
    50: '#6d69a3',
    500: '#28317d',
    950: '#000000',
  },
}

SCSS

$custom: #28317d;
$custom-light: #6d69a3;
$custom-dark: #000000;

JSON

{
  "hex": "#28317d",
  "rgb": {
    "r": 40,
    "g": 49,
    "b": 125
  },
  "hsl": {
    "h": 233.647,
    "s": 51.515,
    "l": 32.353
  },
  "oklch": {
    "l": 0.3545,
    "c": 0.12791,
    "h": 272.9
  },
  "luminance": 0.04128
}

Semantic roles & 50–950 ramp

primary

#28317D

secondary

#AEA453

accent

#CC4DDB

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#08060F

muted

#7A7A7F

Preview Lab

Preview with #28317D

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

Preview Lab → · Contrast checker → · Palette generator →