#311C71#311C71

#311C71 is a dark, vivid violet. Relative luminance 0.027; OKLCH L 31.4% C 0.137 H 287.0°. Best body text is #FFFFFF at 13.68:1 contrast (WCAG AA passes).

Color values

HEX	#311C71
RGB	rgb(49, 28, 113)
HSL	hsl(255, 60%, 28%)
HSV	hsv(255, 75%, 44%)
CMYK	cmyk(56.6%, 75.2%, 0%, 55.7%)
CIE-LAB	lab(18.69, 33.48, -45.48)
CIE-LCH	lch(18.69, 56.47, 306.36°)
OKLab	oklab(31.38% 0.0399 -0.1308)
OKLCH	oklch(31.38% 0.137 287)
XYZ	xyz(4.6616, 2.6755, 15.8904)
Luminance	0.0268 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C71 #5C711C

analogous

#1C3171 #311C71 #5C1C71

triadic

#311C71 #71311C #1C7131

tetradic

#311C71 #711C31 #5C711C #1C715C

square

#311C71 #711C31 #5C711C #1C715C

split-complementary

#311C71 #715C1C #31711C

monochromatic

#0B0619 #1C1040 #311C71 #4628A2 #5E39CE

Accessibility & contrast

On white

13.68

#311C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#311C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C71

13.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C71	#FFFFFF	#000000	##FFFFFF
##311C71	1.00	13.68	1.54	13.68
#FFFFFF	13.68	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003074

Deuteranopia (green-blind)

#002B6F

Tritanopia (blue-blind)

#163344

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #311c71;
/* rgb */ color: rgb(49, 28, 113);
/* oklch */ color: oklch(31.4% 0.137 287.0);

Tailwind

colors: {
  custom: {
    50: '#715a9b',
    500: '#311c71',
    950: '#000000',
  },
}

SCSS

$custom: #311c71;
$custom-light: #715a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#311c71",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 113
  },
  "hsl": {
    "h": 254.824,
    "s": 60.284,
    "l": 27.647
  },
  "oklch": {
    "l": 0.31383,
    "c": 0.13673,
    "h": 287
  },
  "luminance": 0.02676
}

Semantic roles & 50–950 ramp

primary

#311C71

secondary

#8DA643

accent

#E344BC

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040E

muted

#7B797E

Preview Lab

Preview with #311C71

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

Preview Lab → · Contrast checker → · Palette generator →