#311B84#311B84

#311B84 is a dark, vivid violet. Relative luminance 0.031; OKLCH L 33.2% C 0.162 H 282.7°. Best body text is #FFFFFF at 12.96:1 contrast (WCAG AA passes).

Color values

HEX	#311B84
RGB	rgb(49, 27, 132)
HSL	hsl(253, 66%, 31%)
HSV	hsv(253, 80%, 52%)
CMYK	cmyk(62.9%, 79.5%, 0%, 48.2%)
CIE-LAB	lab(20.45, 39.99, -54.72)
CIE-LCH	lch(20.45, 67.78, 306.16°)
OKLab	oklab(33.21% 0.0356 -0.1578)
OKLCH	oklch(33.21% 0.162 282.7)
XYZ	xyz(5.8221, 3.1024, 22.1173)
Luminance	0.0310 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B84 #6E841B

analogous

#1B3984 #311B84 #651B84

triadic

#311B84 #84311B #1B8431

tetradic

#311B84 #841B39 #6E841B #1B8465

square

#311B84 #841B39 #6E841B #1B8465

split-complementary

#311B84 #84651B #39841B

monochromatic

#0B061E #1E1151 #311B84 #4425B7 #6141D8

Accessibility & contrast

On white

12.96

#311B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#311B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B84

12.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B84	#FFFFFF	#000000	##FFFFFF
##311B84	1.00	12.96	1.62	12.96
#FFFFFF	12.96	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003587

Deuteranopia (green-blind)

#002E82

Tritanopia (blue-blind)

#003A4F

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #311b84;
/* rgb */ color: rgb(49, 27, 132);
/* oklch */ color: oklch(33.2% 0.162 282.7);

Tailwind

colors: {
  custom: {
    50: '#755ba9',
    500: '#311b84',
    950: '#000000',
  },
}

SCSS

$custom: #311b84;
$custom-light: #755ba9;
$custom-dark: #000000;

JSON

{
  "hex": "#311b84",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 132
  },
  "hsl": {
    "h": 252.571,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.33208,
    "c": 0.16178,
    "h": 282.7
  },
  "luminance": 0.03103
}

Semantic roles & 50–950 ramp

primary

#311B84

secondary

#9FB743

accent

#E93FC5

background

#F7F5FA

surface

#EEE9F4

border

#C9C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311B84

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

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