#311D74#311D74

#311D74 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 31.8% C 0.139 H 285.9°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#311D74
RGB	rgb(49, 29, 116)
HSL	hsl(254, 60%, 28%)
HSV	hsv(254, 75%, 45%)
CMYK	cmyk(57.8%, 75%, 0%, 54.5%)
CIE-LAB	lab(19.19, 33.86, -46.60)
CIE-LCH	lch(19.19, 57.60, 306.00°)
OKLab	oklab(31.83% 0.0383 -0.1341)
OKLCH	oklch(31.83% 0.139 285.9)
XYZ	xyz(4.8574, 2.7924, 16.8026)
Luminance	0.0279 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D74 #60741D

analogous

#1D3474 #311D74 #5C1D74

triadic

#311D74 #74311D #1D7431

tetradic

#311D74 #741D34 #60741D #1D745C

square

#311D74 #741D34 #60741D #1D745C

split-complementary

#311D74 #745C1D #34741D

monochromatic

#0A0618 #1C1143 #311D74 #4629A5 #5E3DCE

Accessibility & contrast

On white

13.47

#311D74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#311D74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D74

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D74	#FFFFFF	#000000	##FFFFFF
##311D74	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003177

Deuteranopia (green-blind)

#002C72

Tritanopia (blue-blind)

#133446

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311d74;
/* rgb */ color: rgb(49, 29, 116);
/* oklch */ color: oklch(31.8% 0.139 285.9);

Tailwind

colors: {
  custom: {
    50: '#715b9d',
    500: '#311d74',
    950: '#000000',
  },
}

SCSS

$custom: #311d74;
$custom-light: #715b9d;
$custom-dark: #000000;

JSON

{
  "hex": "#311d74",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 116
  },
  "hsl": {
    "h": 253.793,
    "s": 60,
    "l": 28.431
  },
  "oklch": {
    "l": 0.31826,
    "c": 0.13943,
    "h": 285.9
  },
  "luminance": 0.02793
}

Semantic roles & 50–950 ramp

primary

#311D74

secondary

#91A845

accent

#E345BF

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040E

muted

#7B797E

Preview Lab

Preview with #311D74

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

Preview Lab → · Contrast checker → · Palette generator →