#311F80#311F80

#311F80 is a dark, vivid violet. Relative luminance 0.032; OKLCH L 33.3% C 0.153 H 282.8°. Best body text is #FFFFFF at 12.82:1 contrast (WCAG AA passes).

Color values

HEX	#311F80
RGB	rgb(49, 31, 128)
HSL	hsl(251, 61%, 31%)
HSV	hsv(251, 76%, 50%)
CMYK	cmyk(61.7%, 75.8%, 0%, 49.8%)
CIE-LAB	lab(20.79, 36.56, -51.63)
CIE-LCH	lch(20.79, 63.27, 305.31°)
OKLab	oklab(33.32% 0.0338 -0.1488)
OKLCH	oklch(33.32% 0.153 282.8)
XYZ	xyz(5.6517, 3.1911, 20.7360)
Luminance	0.0319 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F80 #6E801F

analogous

#1F3D80 #311F80 #611F80

triadic

#311F80 #80311F #1F8031

tetradic

#311F80 #801F3D #6E801F #1F8061

square

#311F80 #801F3D #6E801F #1F8061

split-complementary

#311F80 #80611F #3D801F

monochromatic

#0B071D #1E134F #311F80 #442BB1 #6147D2

Accessibility & contrast

On white

12.82

#311F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#311F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F80

12.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F80	#FFFFFF	#000000	##FFFFFF
##311F80	1.00	12.82	1.64	12.82
#FFFFFF	12.82	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003583

Deuteranopia (green-blind)

#002F7E

Tritanopia (blue-blind)

#003A4E

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #311f80;
/* rgb */ color: rgb(49, 31, 128);
/* oklch */ color: oklch(33.3% 0.153 282.8);

Tailwind

colors: {
  custom: {
    50: '#745da6',
    500: '#311f80',
    950: '#000000',
  },
}

SCSS

$custom: #311f80;
$custom-light: #745da6;
$custom-dark: #000000;

JSON

{
  "hex": "#311f80",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 128
  },
  "hsl": {
    "h": 251.134,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33324,
    "c": 0.1526,
    "h": 282.8
  },
  "luminance": 0.03191
}

Semantic roles & 50–950 ramp

primary

#311F80

secondary

#9FB348

accent

#E444C6

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311F80

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

Preview Lab → · Contrast checker → · Palette generator →