#311D8D#311D8D

#311D8D is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.4% C 0.171 H 280.7°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#311D8D
RGB	rgb(49, 29, 141)
HSL	hsl(251, 66%, 33%)
HSV	hsv(251, 79%, 55%)
CMYK	cmyk(65.2%, 79.4%, 0%, 44.7%)
CIE-LAB	lab(21.78, 41.76, -58.17)
CIE-LCH	lch(21.78, 71.61, 305.67°)
OKLab	oklab(34.43% 0.0317 -0.1679)
OKLCH	oklch(34.43% 0.171 280.7)
XYZ	xyz(6.5122, 3.4543, 25.5177)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D8D #798D1D

analogous

#1D418D #311D8D #691D8D

triadic

#311D8D #8D311D #1D8D31

tetradic

#311D8D #8D1D41 #798D1D #1D8D69

square

#311D8D #8D1D41 #798D1D #1D8D69

split-complementary

#311D8D #8D691D #418D1D

monochromatic

#0E0827 #1F135A #311D8D #4327C0 #644BDA

Accessibility & contrast

On white

12.42

#311D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#311D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D8D

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D8D	#FFFFFF	#000000	##FFFFFF
##311D8D	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003890

Deuteranopia (green-blind)

#00308B

Tritanopia (blue-blind)

#003E54

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #311d8d;
/* rgb */ color: rgb(49, 29, 141);
/* oklch */ color: oklch(34.4% 0.171 280.7);

Tailwind

colors: {
  custom: {
    50: '#765caf',
    500: '#311d8d',
    950: '#000000',
  },
}

SCSS

$custom: #311d8d;
$custom-light: #765caf;
$custom-dark: #000000;

JSON

{
  "hex": "#311d8d",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 141
  },
  "hsl": {
    "h": 250.714,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.34426,
    "c": 0.17086,
    "h": 280.7
  },
  "luminance": 0.03455
}

Semantic roles & 50–950 ramp

primary

#311D8D

secondary

#A8BC4A

accent

#E93FCA

background

#F7F5FA

surface

#EEE9F5

border

#C9C5CF

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D8D

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

Preview Lab → · Contrast checker → · Palette generator →