#311D8E#311D8E

#311D8E is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.5% C 0.172 H 280.5°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#311D8E
RGB	rgb(49, 29, 142)
HSL	hsl(251, 66%, 34%)
HSV	hsv(251, 80%, 56%)
CMYK	cmyk(65.5%, 79.6%, 0%, 44.3%)
CIE-LAB	lab(21.89, 42.07, -58.62)
CIE-LCH	lch(21.89, 72.15, 305.67°)
OKLab	oklab(34.53% 0.0314 -0.1692)
OKLCH	oklch(34.53% 0.172 280.5)
XYZ	xyz(6.5869, 3.4842, 25.9113)
Luminance	0.0348 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D8E #7A8E1D

analogous

#1D428E #311D8E #691D8E

triadic

#311D8E #8E311D #1D8E31

tetradic

#311D8E #8E1D42 #7A8E1D #1D8E69

square

#311D8E #8E1D42 #7A8E1D #1D8E69

split-complementary

#311D8E #8E691D #428E1D

monochromatic

#0E0828 #1F135B #311D8E #4327C1 #644BDA

Accessibility & contrast

On white

12.37

#311D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#311D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D8E

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D8E	#FFFFFF	#000000	##FFFFFF
##311D8E	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003891

Deuteranopia (green-blind)

#00308C

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #311d8e;
/* rgb */ color: rgb(49, 29, 142);
/* oklch */ color: oklch(34.5% 0.172 280.5);

Tailwind

colors: {
  custom: {
    50: '#775cb0',
    500: '#311d8e',
    950: '#000000',
  },
}

SCSS

$custom: #311d8e;
$custom-light: #775cb0;
$custom-dark: #000000;

JSON

{
  "hex": "#311d8e",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 142
  },
  "hsl": {
    "h": 250.619,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.34534,
    "c": 0.17208,
    "h": 280.5
  },
  "luminance": 0.03485
}

Semantic roles & 50–950 ramp

primary

#311D8E

secondary

#A8BD4A

accent

#E93FCB

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D8E

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

Preview Lab → · Contrast checker → · Palette generator →