#31319F#31319F

#31319F is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.2% C 0.172 H 275.0°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).

Color values

HEX	#31319F
RGB	rgb(49, 49, 159)
HSL	hsl(240, 53%, 41%)
HSV	hsv(240, 69%, 62%)
CMYK	cmyk(69.2%, 69.2%, 0%, 37.6%)
CIE-LAB	lab(27.71, 36.22, -59.48)
CIE-LCH	lch(27.71, 69.64, 301.34°)
OKLab	oklab(39.2% 0.015 -0.1718)
OKLCH	oklch(39.2% 0.172 275)
XYZ	xyz(8.6209, 5.3520, 33.3729)
Luminance	0.0535 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31319F #9F9F31

analogous

#31689F #31319F #68319F

triadic

#31319F #9F3131 #319F31

tetradic

#31319F #9F3168 #9F9F31 #319F68

square

#31319F #9F3168 #9F9F31 #319F68

split-complementary

#31319F #9F6831 #689F31

monochromatic

#141441 #232370 #31319F #4747C6 #7676D5

Accessibility & contrast

On white

10.14

#31319F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#31319F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31319F

10.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31319F	#FFFFFF	#000000	##FFFFFF
##31319F	1.00	10.14	2.07	10.14
#FFFFFF	10.14	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0046A2

Deuteranopia (green-blind)

#003C9D

Tritanopia (blue-blind)

#004F64

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #31319f;
/* rgb */ color: rgb(49, 49, 159);
/* oklch */ color: oklch(39.2% 0.172 275.0);

Tailwind

colors: {
  custom: {
    50: '#796abc',
    500: '#31319f',
    950: '#000000',
  },
}

SCSS

$custom: #31319f;
$custom-light: #796abc;
$custom-dark: #000000;

JSON

{
  "hex": "#31319f",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 159
  },
  "hsl": {
    "h": 240,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39196,
    "c": 0.17245,
    "h": 275
  },
  "luminance": 0.05353
}

Semantic roles & 50–950 ramp

primary

#31319F

secondary

#BDBD6F

accent

#DC4CDC

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #31319F

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

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