#31318C#31318C

#31318C is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.4% C 0.147 H 276.6°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#31318C
RGB	rgb(49, 49, 140)
HSL	hsl(240, 48%, 37%)
HSV	hsv(240, 65%, 55%)
CMYK	cmyk(65%, 65%, 0%, 45.1%)
CIE-LAB	lab(25.99, 29.56, -50.64)
CIE-LCH	lch(25.99, 58.64, 300.28°)
OKLab	oklab(37.41% 0.0169 -0.1459)
OKLCH	oklch(37.41% 0.147 276.6)
XYZ	xyz(7.0970, 4.7425, 25.3472)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31318C #8C8C31

analogous

#315F8C #31318C #5F318C

triadic

#31318C #8C3131 #318C31

tetradic

#31318C #8C315F #8C8C31 #318C5F

square

#31318C #8C315F #8C8C31 #318C5F

split-complementary

#31318C #8C5F31 #5F8C31

monochromatic

#111131 #21215F #31318C #4141B9 #6C6CCC

Accessibility & contrast

On white

10.78

#31318C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#31318C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31318C

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31318C	#FFFFFF	#000000	##FFFFFF
##31318C	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00428F

Deuteranopia (green-blind)

#003A8A

Tritanopia (blue-blind)

#00485A

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #31318c;
/* rgb */ color: rgb(49, 49, 140);
/* oklch */ color: oklch(37.4% 0.147 276.6);

Tailwind

colors: {
  custom: {
    50: '#7469ae',
    500: '#31318c',
    950: '#000000',
  },
}

SCSS

$custom: #31318c;
$custom-light: #7469ae;
$custom-dark: #000000;

JSON

{
  "hex": "#31318c",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 140
  },
  "hsl": {
    "h": 240,
    "s": 48.148,
    "l": 37.059
  },
  "oklch": {
    "l": 0.3741,
    "c": 0.14689,
    "h": 276.6
  },
  "luminance": 0.04743
}

Semantic roles & 50–950 ramp

primary

#31318C

secondary

#B3B366

accent

#D850D8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#090610

muted

#7B7A7F

Preview Lab

Preview with #31318C

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

Preview Lab → · Contrast checker → · Palette generator →