#311681#311681

#311681 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 32.3% C 0.163 H 284.1°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#311681
RGB	rgb(49, 22, 129)
HSL	hsl(255, 71%, 30%)
HSV	hsv(255, 83%, 51%)
CMYK	cmyk(62%, 82.9%, 0%, 49.4%)
CIE-LAB	lab(19.27, 41.53, -54.77)
CIE-LCH	lch(19.27, 68.74, 307.17°)
OKLab	oklab(32.29% 0.0397 -0.1579)
OKLCH	oklch(32.29% 0.163 284.1)
XYZ	xyz(5.5148, 2.8114, 21.0167)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311681 #668116

analogous

#163181 #311681 #671681

triadic

#311681 #813116 #168131

tetradic

#311681 #811631 #668116 #168167

square

#311681 #811631 #668116 #168167

split-complementary

#311681 #816716 #318116

monochromatic

#0A041A #1D0D4D #311681 #451FB5 #5F35DD

Accessibility & contrast

On white

13.44

#311681 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#311681 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311681

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311681	#FFFFFF	#000000	##FFFFFF
##311681	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#002B7F

Tritanopia (blue-blind)

#00364C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311681;
/* rgb */ color: rgb(49, 22, 129);
/* oklch */ color: oklch(32.3% 0.163 284.1);

Tailwind

colors: {
  custom: {
    50: '#7458a7',
    500: '#311681',
    950: '#000000',
  },
}

SCSS

$custom: #311681;
$custom-light: #7458a7;
$custom-dark: #000000;

JSON

{
  "hex": "#311681",
  "rgb": {
    "r": 49,
    "g": 22,
    "b": 129
  },
  "hsl": {
    "h": 255.14,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.32291,
    "c": 0.1628,
    "h": 284.1
  },
  "luminance": 0.02812
}

Semantic roles & 50–950 ramp

primary

#311681

secondary

#97B63D

accent

#EE3AC0

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090310

muted

#7B787F

Preview Lab

Preview with #311681

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

Preview Lab → · Contrast checker → · Palette generator →