#311C8E#311C8E

#311C8E is a dark, vivid violet. Relative luminance 0.034; OKLCH L 34.4% C 0.173 H 280.7°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX	#311C8E
RGB	rgb(49, 28, 142)
HSL	hsl(251, 67%, 33%)
HSV	hsv(251, 80%, 56%)
CMYK	cmyk(65.5%, 80.3%, 0%, 44.3%)
CIE-LAB	lab(21.71, 42.58, -58.91)
CIE-LCH	lch(21.71, 72.68, 305.86°)
OKLab	oklab(34.41% 0.032 -0.17)
OKLCH	oklch(34.41% 0.173 280.7)
XYZ	xyz(6.5628, 3.4360, 25.9033)
Luminance	0.0344 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C8E #798E1C

analogous

#1C408E #311C8E #6A1C8E

triadic

#311C8E #8E311C #1C8E31

tetradic

#311C8E #8E1C40 #798E1C #1C8E6A

square

#311C8E #8E1C40 #798E1C #1C8E6A

split-complementary

#311C8E #8E6A1C #408E1C

monochromatic

#0E0828 #1F125B #311C8E #4326C1 #6449DB

Accessibility & contrast

On white

12.45

#311C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#311C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C8E

12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C8E	#FFFFFF	#000000	##FFFFFF
##311C8E	1.00	12.45	1.69	12.45
#FFFFFF	12.45	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003891

Deuteranopia (green-blind)

#00308C

Tritanopia (blue-blind)

#003E55

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #311c8e;
/* rgb */ color: rgb(49, 28, 142);
/* oklch */ color: oklch(34.4% 0.173 280.7);

Tailwind

colors: {
  custom: {
    50: '#775cb0',
    500: '#311c8e',
    950: '#000000',
  },
}

SCSS

$custom: #311c8e;
$custom-light: #775cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#311c8e",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 142
  },
  "hsl": {
    "h": 251.053,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34412,
    "c": 0.173,
    "h": 280.7
  },
  "luminance": 0.03436
}

Semantic roles & 50–950 ramp

primary

#311C8E

secondary

#A8BD49

accent

#EA3ECA

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311C8E

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

Preview Lab → · Contrast checker → · Palette generator →