#311B7C#311B7C

#311B7C is a dark, vivid violet. Relative luminance 0.029; OKLCH L 32.4% C 0.152 H 284.5°. Best body text is #FFFFFF at 13.30:1 contrast (WCAG AA passes).

Color values

HEX	#311B7C
RGB	rgb(49, 27, 124)
HSL	hsl(254, 64%, 30%)
HSV	hsv(254, 78%, 49%)
CMYK	cmyk(60.5%, 78.2%, 0%, 51.4%)
CIE-LAB	lab(19.60, 37.50, -51.04)
CIE-LCH	lch(19.60, 63.34, 306.30°)
OKLab	oklab(32.36% 0.0379 -0.1471)
OKLCH	oklch(32.36% 0.152 284.5)
XYZ	xyz(5.2955, 2.8917, 19.3440)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B7C #667C1B

analogous

#1B367C #311B7C #611B7C

triadic

#311B7C #7C311B #1B7C31

tetradic

#311B7C #7C1B36 #667C1B #1B7C61

square

#311B7C #7C1B36 #667C1B #1B7C61

split-complementary

#311B7C #7C611B #367C1B

monochromatic

#0A0519 #1D104A #311B7C #4526AE #5F3DD5

Accessibility & contrast

On white

13.30

#311B7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#311B7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B7C

13.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B7C	#FFFFFF	#000000	##FFFFFF
##311B7C	1.00	13.30	1.58	13.30
#FFFFFF	13.30	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327F

Deuteranopia (green-blind)

#002C7A

Tritanopia (blue-blind)

#06374A

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311b7c;
/* rgb */ color: rgb(49, 27, 124);
/* oklch */ color: oklch(32.4% 0.152 284.5);

Tailwind

colors: {
  custom: {
    50: '#735aa3',
    500: '#311b7c',
    950: '#000000',
  },
}

SCSS

$custom: #311b7c;
$custom-light: #735aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#311b7c",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 124
  },
  "hsl": {
    "h": 253.608,
    "s": 64.238,
    "l": 29.608
  },
  "oklch": {
    "l": 0.32362,
    "c": 0.15187,
    "h": 284.5
  },
  "luminance": 0.02892
}

Semantic roles & 50–950 ramp

primary

#311B7C

secondary

#97B043

accent

#E741C1

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311B7C

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

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