#311D8F#311D8F

#311D8F is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.6% C 0.173 H 280.4°. Best body text is #FFFFFF at 12.33:1 contrast (WCAG AA passes).

Color values

HEX	#311D8F
RGB	rgb(49, 29, 143)
HSL	hsl(251, 66%, 34%)
HSV	hsv(251, 80%, 56%)
CMYK	cmyk(65.7%, 79.7%, 0%, 43.9%)
CIE-LAB	lab(22.00, 42.38, -59.06)
CIE-LCH	lch(22.00, 72.69, 305.66°)
OKLab	oklab(34.64% 0.0312 -0.1705)
OKLCH	oklch(34.64% 0.173 280.4)
XYZ	xyz(6.6623, 3.5143, 26.3085)
Luminance	0.0352 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D8F #7B8F1D

analogous

#1D428F #311D8F #6A1D8F

triadic

#311D8F #8F311D #1D8F31

tetradic

#311D8F #8F1D42 #7B8F1D #1D8F6A

square

#311D8F #8F1D42 #7B8F1D #1D8F6A

split-complementary

#311D8F #8F6A1D #428F1D

monochromatic

#0E0829 #20135C #311D8F #4227C2 #654CDB

Accessibility & contrast

On white

12.33

#311D8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#311D8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D8F

12.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D8F	#FFFFFF	#000000	##FFFFFF
##311D8F	1.00	12.33	1.70	12.33
#FFFFFF	12.33	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003992

Deuteranopia (green-blind)

#00308D

Tritanopia (blue-blind)

#003F56

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #311d8f;
/* rgb */ color: rgb(49, 29, 143);
/* oklch */ color: oklch(34.6% 0.173 280.4);

Tailwind

colors: {
  custom: {
    50: '#775db1',
    500: '#311d8f',
    950: '#000000',
  },
}

SCSS

$custom: #311d8f;
$custom-light: #775db1;
$custom-dark: #000000;

JSON

{
  "hex": "#311d8f",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 143
  },
  "hsl": {
    "h": 250.526,
    "s": 66.279,
    "l": 33.725
  },
  "oklch": {
    "l": 0.34643,
    "c": 0.17329,
    "h": 280.4
  },
  "luminance": 0.03515
}

Semantic roles & 50–950 ramp

primary

#311D8F

secondary

#A9BD4B

accent

#E93FCB

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D8F

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

Preview Lab → · Contrast checker → · Palette generator →