#311C8D#311C8D

#311C8D is a dark, vivid violet. Relative luminance 0.034; OKLCH L 34.3% C 0.172 H 280.8°. Best body text is #FFFFFF at 12.49:1 contrast (WCAG AA passes).

Color values

HEX	#311C8D
RGB	rgb(49, 28, 141)
HSL	hsl(251, 67%, 33%)
HSV	hsv(251, 80%, 55%)
CMYK	cmyk(65.2%, 80.1%, 0%, 44.7%)
CIE-LAB	lab(21.60, 42.27, -58.46)
CIE-LCH	lch(21.60, 72.14, 305.87°)
OKLab	oklab(34.3% 0.0323 -0.1687)
OKLCH	oklch(34.3% 0.172 280.8)
XYZ	xyz(6.4881, 3.4061, 25.5097)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C8D #788D1C

analogous

#1C408D #311C8D #691C8D

triadic

#311C8D #8D311C #1C8D31

tetradic

#311C8D #8D1C40 #788D1C #1C8D69

square

#311C8D #8D1C40 #788D1C #1C8D69

split-complementary

#311C8D #8D691C #408D1C

monochromatic

#0E0827 #1F125A #311C8D #4326C0 #6449DB

Accessibility & contrast

On white

12.49

#311C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#311C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C8D

12.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C8D	#FFFFFF	#000000	##FFFFFF
##311C8D	1.00	12.49	1.68	12.49
#FFFFFF	12.49	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003890

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #311c8d;
/* rgb */ color: rgb(49, 28, 141);
/* oklch */ color: oklch(34.3% 0.172 280.8);

Tailwind

colors: {
  custom: {
    50: '#765cb0',
    500: '#311c8d',
    950: '#000000',
  },
}

SCSS

$custom: #311c8d;
$custom-light: #765cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#311c8d",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 141
  },
  "hsl": {
    "h": 251.15,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.34303,
    "c": 0.1718,
    "h": 280.8
  },
  "luminance": 0.03407
}

Semantic roles & 50–950 ramp

primary

#311C8D

secondary

#A7BD48

accent

#EA3ECA

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311C8D

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

Preview Lab → · Contrast checker → · Palette generator →