#311D78#311D78

#311D78 is a dark, vivid violet. Relative luminance 0.029; OKLCH L 32.2% C 0.145 H 285.0°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#311D78
RGB	rgb(49, 29, 120)
HSL	hsl(253, 61%, 29%)
HSV	hsv(253, 76%, 47%)
CMYK	cmyk(59.2%, 75.8%, 0%, 52.9%)
CIE-LAB	lab(19.59, 35.13, -48.52)
CIE-LCH	lch(19.59, 59.90, 305.91°)
OKLab	oklab(32.23% 0.0374 -0.1397)
OKLCH	oklch(32.23% 0.145 285)
XYZ	xyz(5.0951, 2.8875, 18.0545)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D78 #64781D

analogous

#1D3778 #311D78 #5F1D78

triadic

#311D78 #78311D #1D7831

tetradic

#311D78 #781D37 #64781D #1D785F

square

#311D78 #781D37 #64781D #1D785F

split-complementary

#311D78 #785F1D #37781D

monochromatic

#0A0619 #1D1147 #311D78 #4529A9 #5F3FD1

Accessibility & contrast

On white

13.31

#311D78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#311D78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D78

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D78	#FFFFFF	#000000	##FFFFFF
##311D78	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327B

Deuteranopia (green-blind)

#002D76

Tritanopia (blue-blind)

#0D3649

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311d78;
/* rgb */ color: rgb(49, 29, 120);
/* oklch */ color: oklch(32.2% 0.145 285.0);

Tailwind

colors: {
  custom: {
    50: '#725ba0',
    500: '#311d78',
    950: '#000000',
  },
}

SCSS

$custom: #311d78;
$custom-light: #725ba0;
$custom-dark: #000000;

JSON

{
  "hex": "#311d78",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 120
  },
  "hsl": {
    "h": 253.187,
    "s": 61.074,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32226,
    "c": 0.1446,
    "h": 285
  },
  "luminance": 0.02888
}

Semantic roles & 50–950 ramp

primary

#311D78

secondary

#95AC45

accent

#E444C1

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#09040F

muted

#7B797E

Preview Lab

Preview with #311D78

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

Preview Lab → · Contrast checker → · Palette generator →