#311C90#311C90

#311C90 is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.6% C 0.175 H 280.3°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#311C90
RGB	rgb(49, 28, 144)
HSL	hsl(251, 67%, 34%)
HSV	hsv(251, 81%, 56%)
CMYK	cmyk(66%, 80.6%, 0%, 43.5%)
CIE-LAB	lab(21.93, 43.19, -59.79)
CIE-LCH	lch(21.93, 73.76, 305.85°)
OKLab	oklab(34.63% 0.0314 -0.1726)
OKLCH	oklch(34.63% 0.175 280.3)
XYZ	xyz(6.7143, 3.4966, 26.7012)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311C90 #7B901C

analogous

#1C4190 #311C90 #6B1C90

triadic

#311C90 #90311C #1C9031

tetradic

#311C90 #901C41 #7B901C #1C906B

square

#311C90 #901C41 #7B901C #1C906B

split-complementary

#311C90 #906B1C #41901C

monochromatic

#0E082A #20125D #311C90 #4226C3 #654ADC

Accessibility & contrast

On white

12.36

#311C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#311C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311C90

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311C90	#FFFFFF	#000000	##FFFFFF
##311C90	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003993

Deuteranopia (green-blind)

#00308E

Tritanopia (blue-blind)

#003F56

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #311c90;
/* rgb */ color: rgb(49, 28, 144);
/* oklch */ color: oklch(34.6% 0.175 280.3);

Tailwind

colors: {
  custom: {
    50: '#775cb2',
    500: '#311c90',
    950: '#000000',
  },
}

SCSS

$custom: #311c90;
$custom-light: #775cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#311c90",
  "rgb": {
    "r": 49,
    "g": 28,
    "b": 144
  },
  "hsl": {
    "h": 250.862,
    "s": 67.442,
    "l": 33.725
  },
  "oklch": {
    "l": 0.34631,
    "c": 0.17542,
    "h": 280.3
  },
  "luminance": 0.03497
}

Semantic roles & 50–950 ramp

primary

#311C90

secondary

#A9BE4A

accent

#EA3DCB

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311C90

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

Preview Lab → · Contrast checker → · Palette generator →