#311C78#311C78

#311C78 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 32.1% C 0.146 H 285.2°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#311C78
RGB	rgb(49, 28, 120)
HSL	hsl(254, 62%, 29%)
HSV	hsv(254, 77%, 47%)
CMYK	cmyk(59.2%, 76.7%, 0%, 52.9%)
CIE-LAB	lab(19.39, 35.70, -48.85)
CIE-LCH	lch(19.39, 60.50, 306.16°)
OKLab	oklab(32.09% 0.0382 -0.1406)
OKLCH	oklch(32.09% 0.146 285.2)
XYZ	xyz(5.0710, 2.8392, 18.0465)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C78 #63781C

analogous

#1C3578 #311C78 #5F1C78

triadic

#311C78 #78311C #1C7831

tetradic

#311C78 #781C35 #63781C #1C785F

square

#311C78 #781C35 #63781C #1C785F

split-complementary

#311C78 #785F1C #35781C

monochromatic

#0A0619 #1D1046 #311C78 #4528AA #5F3DD2

Accessibility & contrast

On white

13.39

#311C78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#311C78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C78

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C78	#FFFFFF	#000000	##FFFFFF
##311C78	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317B

Deuteranopia (green-blind)

#002C76

Tritanopia (blue-blind)

#0D3548

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311c78;
/* rgb */ color: rgb(49, 28, 120);
/* oklch */ color: oklch(32.1% 0.146 285.2);

Tailwind

colors: {
  custom: {
    50: '#725ba0',
    500: '#311c78',
    950: '#000000',
  },
}

SCSS

$custom: #311c78;
$custom-light: #725ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#311c78",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 120
  },
  "hsl": {
    "h": 253.696,
    "s": 62.162,
    "l": 29.02
  },
  "oklch": {
    "l": 0.32086,
    "c": 0.14573,
    "h": 285.2
  },
  "luminance": 0.0284
}

Semantic roles & 50–950 ramp

primary

#311C78

secondary

#94AC44

accent

#E543C0

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#09040F

muted

#7B797E

Preview Lab

Preview with #311C78

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

Preview Lab → · Contrast checker → · Palette generator →