#31318D#31318D

#31318D is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.5% C 0.148 H 276.5°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#31318D
RGB	rgb(49, 49, 141)
HSL	hsl(240, 48%, 37%)
HSV	hsv(240, 65%, 55%)
CMYK	cmyk(65.2%, 65.2%, 0%, 44.7%)
CIE-LAB	lab(26.08, 29.92, -51.12)
CIE-LCH	lch(26.08, 59.23, 300.34°)
OKLab	oklab(37.5% 0.0169 -0.1473)
OKLCH	oklch(37.5% 0.148 276.5)
XYZ	xyz(7.1711, 4.7721, 25.7373)
Luminance	0.0477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31318D #8D8D31

analogous

#315F8D #31318D #5F318D

triadic

#31318D #8D3131 #318D31

tetradic

#31318D #8D315F #8D8D31 #318D5F

square

#31318D #8D315F #8D8D31 #318D5F

split-complementary

#31318D #8D5F31 #5F8D31

monochromatic

#111132 #212160 #31318D #4141BA #6C6CCC

Accessibility & contrast

On white

10.74

#31318D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#31318D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31318D

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31318D	#FFFFFF	#000000	##FFFFFF
##31318D	1.00	10.74	1.95	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004290

Deuteranopia (green-blind)

#003A8B

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #31318d;
/* rgb */ color: rgb(49, 49, 141);
/* oklch */ color: oklch(37.5% 0.148 276.5);

Tailwind

colors: {
  custom: {
    50: '#7569af',
    500: '#31318d',
    950: '#000000',
  },
}

SCSS

$custom: #31318d;
$custom-light: #7569af;
$custom-dark: #000000;

JSON

{
  "hex": "#31318d",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 141
  },
  "hsl": {
    "h": 240,
    "s": 48.421,
    "l": 37.255
  },
  "oklch": {
    "l": 0.37501,
    "c": 0.14827,
    "h": 276.5
  },
  "luminance": 0.04773
}

Semantic roles & 50–950 ramp

primary

#31318D

secondary

#B4B466

accent

#D850D8

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #31318D

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

Preview Lab → · Contrast checker → · Palette generator →