#311A9D#311A9D

#311A9D is a dark, vivid violet. Relative luminance 0.038; OKLCH L 35.9% C 0.192 H 278.5°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#311A9D
RGB	rgb(49, 26, 157)
HSL	hsl(251, 72%, 36%)
HSV	hsv(251, 83%, 62%)
CMYK	cmyk(68.8%, 83.4%, 0%, 38.4%)
CIE-LAB	lab(23.09, 48.06, -65.89)
CIE-LCH	lch(23.09, 81.56, 306.11°)
OKLab	oklab(35.86% 0.0284 -0.1903)
OKLCH	oklch(35.86% 0.192 278.5)
XYZ	xyz(7.7199, 3.8254, 32.2233)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311A9D #869D1A

analogous

#1A449D #311A9D #721A9D

triadic

#311A9D #9D311A #1A9D31

tetradic

#311A9D #9D1A44 #869D1A #1A9D72

square

#311A9D #9D1A44 #869D1A #1A9D72

split-complementary

#311A9D #9D721A #449D1A

monochromatic

#100934 #211168 #311A9D #4123D2 #694FE2

Accessibility & contrast

On white

11.90

#311A9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#311A9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311A9D

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311A9D	#FFFFFF	#000000	##FFFFFF
##311A9D	1.00	11.90	1.77	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA1

Deuteranopia (green-blind)

#00329B

Tritanopia (blue-blind)

#00445D

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #311a9d;
/* rgb */ color: rgb(49, 26, 157);
/* oklch */ color: oklch(35.9% 0.192 278.5);

Tailwind

colors: {
  custom: {
    50: '#7a5cbb',
    500: '#311a9d',
    950: '#000000',
  },
}

SCSS

$custom: #311a9d;
$custom-light: #7a5cbb;
$custom-dark: #000000;

JSON

{
  "hex": "#311a9d",
  "rgb": {
    "r": 49,
    "g": 26,
    "b": 157
  },
  "hsl": {
    "h": 250.534,
    "s": 71.585,
    "l": 35.882
  },
  "oklch": {
    "l": 0.35863,
    "c": 0.19241,
    "h": 278.5
  },
  "luminance": 0.03826
}

Semantic roles & 50–950 ramp

primary

#311A9D

secondary

#B0C44E

accent

#EE39CF

background

#F8F5FB

surface

#EFE9F6

border

#CAC5D0

text

#0B0412

muted

#7C7981

Preview Lab

Preview with #311A9D

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

Preview Lab → · Contrast checker → · Palette generator →