#31319C#31319C

#31319C is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.9% C 0.169 H 275.2°. Best body text is #FFFFFF at 10.24:1 contrast (WCAG AA passes).

Color values

HEX	#31319C
RGB	rgb(49, 49, 156)
HSL	hsl(240, 52%, 40%)
HSV	hsv(240, 69%, 61%)
CMYK	cmyk(68.6%, 68.6%, 0%, 38.8%)
CIE-LAB	lab(27.43, 35.18, -58.11)
CIE-LCH	lch(27.43, 67.93, 301.19°)
OKLab	oklab(38.91% 0.0153 -0.1678)
OKLCH	oklch(38.91% 0.169 275.2)
XYZ	xyz(8.3637, 5.2491, 32.0185)
Luminance	0.0525 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31319C #9C9C31

analogous

#31669C #31319C #66319C

triadic

#31319C #9C3131 #319C31

tetradic

#31319C #9C3166 #9C9C31 #319C66

square

#31319C #9C3166 #9C9C31 #319C66

split-complementary

#31319C #9C6631 #669C31

monochromatic

#14143F #22226D #31319C #4545C5 #7474D3

Accessibility & contrast

On white

10.24

#31319C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#31319C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31319C

10.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31319C	#FFFFFF	#000000	##FFFFFF
##31319C	1.00	10.24	2.05	10.24
#FFFFFF	10.24	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00469F

Deuteranopia (green-blind)

#003C9A

Tritanopia (blue-blind)

#004E62

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31319c;
/* rgb */ color: rgb(49, 49, 156);
/* oklch */ color: oklch(38.9% 0.169 275.2);

Tailwind

colors: {
  custom: {
    50: '#786aba',
    500: '#31319c',
    950: '#000000',
  },
}

SCSS

$custom: #31319c;
$custom-light: #786aba;
$custom-dark: #000000;

JSON

{
  "hex": "#31319c",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 156
  },
  "hsl": {
    "h": 240,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.38906,
    "c": 0.16851,
    "h": 275.2
  },
  "luminance": 0.0525
}

Semantic roles & 50–950 ramp

primary

#31319C

secondary

#BBBB6D

accent

#DC4CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31319C

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

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