#311D87#311D87

#311D87 is a dark, vivid violet. Relative luminance 0.033; OKLCH L 33.8% C 0.163 H 281.8°. Best body text is #FFFFFF at 12.68:1 contrast (WCAG AA passes).

Color values

HEX	#311D87
RGB	rgb(49, 29, 135)
HSL	hsl(251, 65%, 32%)
HSV	hsv(251, 79%, 53%)
CMYK	cmyk(63.7%, 78.5%, 0%, 47.1%)
CIE-LAB	lab(21.13, 39.88, -55.48)
CIE-LCH	lch(21.13, 68.33, 305.71°)
OKLab	oklab(33.78% 0.0334 -0.16)
OKLCH	oklch(33.78% 0.163 281.8)
XYZ	xyz(6.0778, 3.2805, 23.2299)
Luminance	0.0328 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D87 #73871D

analogous

#1D3E87 #311D87 #661D87

triadic

#311D87 #87311D #1D8731

tetradic

#311D87 #871D3E #73871D #1D8766

square

#311D87 #871D3E #73871D #1D8766

split-complementary

#311D87 #87661D #3E871D

monochromatic

#0C0722 #1F1255 #311D87 #4328B9 #6247D7

Accessibility & contrast

On white

12.68

#311D87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#311D87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D87

12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D87	#FFFFFF	#000000	##FFFFFF
##311D87	1.00	12.68	1.66	12.68
#FFFFFF	12.68	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00368A

Deuteranopia (green-blind)

#002F85

Tritanopia (blue-blind)

#003C51

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #311d87;
/* rgb */ color: rgb(49, 29, 135);
/* oklch */ color: oklch(33.8% 0.163 281.8);

Tailwind

colors: {
  custom: {
    50: '#755cab',
    500: '#311d87',
    950: '#000000',
  },
}

SCSS

$custom: #311d87;
$custom-light: #755cab;
$custom-dark: #000000;

JSON

{
  "hex": "#311d87",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 135
  },
  "hsl": {
    "h": 251.321,
    "s": 64.634,
    "l": 32.157
  },
  "oklch": {
    "l": 0.33783,
    "c": 0.16349,
    "h": 281.8
  },
  "luminance": 0.03281
}

Semantic roles & 50–950 ramp

primary

#311D87

secondary

#A4B946

accent

#E840C8

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311D87

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

Preview Lab → · Contrast checker → · Palette generator →