#311B77#311B77

#311B77 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 31.8% C 0.146 H 285.6°. Best body text is #FFFFFF at 13.52:1 contrast (WCAG AA passes).

Color values

HEX	#311B77
RGB	rgb(49, 27, 119)
HSL	hsl(254, 63%, 29%)
HSV	hsv(254, 77%, 47%)
CMYK	cmyk(58.8%, 77.3%, 0%, 53.3%)
CIE-LAB	lab(19.09, 35.93, -48.69)
CIE-LCH	lch(19.09, 60.51, 306.42°)
OKLab	oklab(31.85% 0.0393 -0.1402)
OKLCH	oklch(31.85% 0.146 285.6)
XYZ	xyz(4.9873, 2.7685, 17.7208)
Luminance	0.0277 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B77 #61771B

analogous

#1B3377 #311B77 #5F1B77

triadic

#311B77 #77311B #1B7731

tetradic

#311B77 #771B33 #61771B #1B775F

square

#311B77 #771B33 #61771B #1B775F

split-complementary

#311B77 #775F1B #33771B

monochromatic

#0A0619 #1C1045 #311B77 #4626A9 #5E3AD2

Accessibility & contrast

On white

13.52

#311B77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#311B77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B77

13.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B77	#FFFFFF	#000000	##FFFFFF
##311B77	1.00	13.52	1.55	13.52
#FFFFFF	13.52	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317A

Deuteranopia (green-blind)

#002C75

Tritanopia (blue-blind)

#0F3547

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #311b77;
/* rgb */ color: rgb(49, 27, 119);
/* oklch */ color: oklch(31.8% 0.146 285.6);

Tailwind

colors: {
  custom: {
    50: '#725a9f',
    500: '#311b77',
    950: '#000000',
  },
}

SCSS

$custom: #311b77;
$custom-light: #725a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#311b77",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 119
  },
  "hsl": {
    "h": 254.348,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.31846,
    "c": 0.14557,
    "h": 285.6
  },
  "luminance": 0.02769
}

Semantic roles & 50–950 ramp

primary

#311B77

secondary

#92AB42

accent

#E642BF

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#09040F

muted

#7B797E

Preview Lab

Preview with #311B77

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

Preview Lab → · Contrast checker → · Palette generator →