#311D90#311D90

#311D90 is a dark, vivid violet. Relative luminance 0.035; OKLCH L 34.8% C 0.174 H 280.2°. Best body text is #FFFFFF at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#311D90
RGB	rgb(49, 29, 144)
HSL	hsl(250, 66%, 34%)
HSV	hsv(250, 80%, 56%)
CMYK	cmyk(66%, 79.9%, 0%, 43.5%)
CIE-LAB	lab(22.11, 42.69, -59.50)
CIE-LCH	lch(22.11, 73.23, 305.66°)
OKLab	oklab(34.75% 0.0309 -0.1718)
OKLCH	oklch(34.75% 0.175 280.2)
XYZ	xyz(6.7384, 3.5448, 26.7093)
Luminance	0.0355 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D90 #7C901D

analogous

#1D4390 #311D90 #6B1D90

triadic

#311D90 #90311D #1D9031

tetradic

#311D90 #901D43 #7C901D #1D906B

square

#311D90 #901D43 #7C901D #1D906B

split-complementary

#311D90 #906B1D #43901D

monochromatic

#0E082A #20135D #311D90 #4227C3 #654CDB

Accessibility & contrast

On white

12.29

#311D90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#311D90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D90

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D90	#FFFFFF	#000000	##FFFFFF
##311D90	1.00	12.29	1.71	12.29
#FFFFFF	12.29	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003993

Deuteranopia (green-blind)

#00308E

Tritanopia (blue-blind)

#003F56

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #311d90;
/* rgb */ color: rgb(49, 29, 144);
/* oklch */ color: oklch(34.8% 0.174 280.2);

Tailwind

colors: {
  custom: {
    50: '#775db2',
    500: '#311d90',
    950: '#000000',
  },
}

SCSS

$custom: #311d90;
$custom-light: #775db2;
$custom-dark: #000000;

JSON

{
  "hex": "#311d90",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 144
  },
  "hsl": {
    "h": 250.435,
    "s": 66.474,
    "l": 33.922
  },
  "oklch": {
    "l": 0.34752,
    "c": 0.1745,
    "h": 280.2
  },
  "luminance": 0.03545
}

Semantic roles & 50–950 ramp

primary

#311D90

secondary

#AABD4B

accent

#E93ECC

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0411

muted

#7C7980

Preview Lab

Preview with #311D90

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

Preview Lab → · Contrast checker → · Palette generator →