#311B82#311B82

#311B82 is a dark, vivid violet. Relative luminance 0.030; OKLCH L 33.0% C 0.159 H 283.1°. Best body text is #FFFFFF at 13.05:1 contrast (WCAG AA passes).

Color values

HEX	#311B82
RGB	rgb(49, 27, 130)
HSL	hsl(253, 66%, 31%)
HSV	hsv(253, 79%, 51%)
CMYK	cmyk(62.3%, 79.2%, 0%, 49%)
CIE-LAB	lab(20.24, 39.37, -53.81)
CIE-LCH	lch(20.24, 66.68, 306.19°)
OKLab	oklab(32.99% 0.0362 -0.1551)
OKLCH	oklch(32.99% 0.159 283.1)
XYZ	xyz(5.6866, 3.0482, 21.4035)
Luminance	0.0305 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B82 #6C821B

analogous

#1B3882 #311B82 #641B82

triadic

#311B82 #82311B #1B8231

tetradic

#311B82 #821B38 #6C821B #1B8264

square

#311B82 #821B38 #6C821B #1B8264

split-complementary

#311B82 #82641B #38821B

monochromatic

#0B061D #1E104F #311B82 #4426B5 #6040D7

Accessibility & contrast

On white

13.05

#311B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#311B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B82

13.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B82	#FFFFFF	#000000	##FFFFFF
##311B82	1.00	13.05	1.61	13.05
#FFFFFF	13.05	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003485

Deuteranopia (green-blind)

#002D80

Tritanopia (blue-blind)

#00394E

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #311b82;
/* rgb */ color: rgb(49, 27, 130);
/* oklch */ color: oklch(33.0% 0.159 283.1);

Tailwind

colors: {
  custom: {
    50: '#745ba7',
    500: '#311b82',
    950: '#000000',
  },
}

SCSS

$custom: #311b82;
$custom-light: #745ba7;
$custom-dark: #000000;

JSON

{
  "hex": "#311b82",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 130
  },
  "hsl": {
    "h": 252.816,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.32994,
    "c": 0.15931,
    "h": 283.1
  },
  "luminance": 0.03049
}

Semantic roles & 50–950 ramp

primary

#311B82

secondary

#9DB643

accent

#E93FC4

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#090410

muted

#7B797F

Preview Lab

Preview with #311B82

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

Preview Lab → · Contrast checker → · Palette generator →