#311B97#311B97

#311B97 is a dark, vivid violet. Relative luminance 0.037; OKLCH L 35.3% C 0.185 H 279.3°. Best body text is #FFFFFF at 12.11:1 contrast (WCAG AA passes).

Color values

HEX	#311B97
RGB	rgb(49, 27, 151)
HSL	hsl(251, 70%, 35%)
HSV	hsv(251, 82%, 59%)
CMYK	cmyk(67.5%, 82.1%, 0%, 40.8%)
CIE-LAB	lab(22.55, 45.81, -63.09)
CIE-LCH	lch(22.55, 77.97, 305.98°)
OKLab	oklab(35.29% 0.0298 -0.1822)
OKLCH	oklch(35.29% 0.185 279.3)
XYZ	xyz(7.2427, 3.6706, 29.5990)
Luminance	0.0367 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B97 #81971B

analogous

#1B4397 #311B97 #6F1B97

triadic

#311B97 #97311B #1B9731

tetradic

#311B97 #971B43 #81971B #1B976F

square

#311B97 #971B43 #81971B #1B976F

split-complementary

#311B97 #976F1B #43971B

monochromatic

#0F082F #201263 #311B97 #4224CB #674DDF

Accessibility & contrast

On white

12.11

#311B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#311B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B97

12.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B97	#FFFFFF	#000000	##FFFFFF
##311B97	1.00	12.11	1.73	12.11
#FFFFFF	12.11	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A9A

Deuteranopia (green-blind)

#003195

Tritanopia (blue-blind)

#00415A

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #311b97;
/* rgb */ color: rgb(49, 27, 151);
/* oklch */ color: oklch(35.3% 0.185 279.3);

Tailwind

colors: {
  custom: {
    50: '#795cb7',
    500: '#311b97',
    950: '#000000',
  },
}

SCSS

$custom: #311b97;
$custom-light: #795cb7;
$custom-dark: #000000;

JSON

{
  "hex": "#311b97",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 151
  },
  "hsl": {
    "h": 250.645,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.35292,
    "c": 0.18461,
    "h": 279.3
  },
  "luminance": 0.03671
}

Semantic roles & 50–950 ramp

primary

#311B97

secondary

#ADC14C

accent

#EC3BCD

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311B97

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

Preview Lab → · Contrast checker → · Palette generator →