#311B59#311B59

#311B59 is a dark, moderate violet. Relative luminance 0.022; OKLCH L 29.0% C 0.106 H 295.3°. Best body text is #FFFFFF at 14.67:1 contrast (WCAG AA passes).

Color values

HEX	#311B59
RGB	rgb(49, 27, 89)
HSL	hsl(261, 53%, 23%)
HSV	hsv(261, 70%, 35%)
CMYK	cmyk(44.9%, 69.7%, 0%, 65.1%)
CIE-LAB	lab(16.30, 26.53, -33.59)
CIE-LCH	lch(16.30, 42.80, 308.30°)
OKLab	oklab(28.99% 0.0453 -0.0959)
OKLCH	oklch(28.99% 0.106 295.3)
XYZ	xyz(3.4613, 2.1580, 9.6834)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B59 #43591B

analogous

#1B2459 #311B59 #501B59

triadic

#311B59 #59311B #1B5931

tetradic

#311B59 #591B24 #43591B #1B5950

square

#311B59 #591B24 #43591B #1B5950

split-complementary

#311B59 #59501B #24591B

monochromatic

#0D0717 #170D2A #311B59 #4B2988 #6537B7

Accessibility & contrast

On white

14.67

#311B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#311B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B59

14.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B59	#FFFFFF	#000000	##FFFFFF
##311B59	1.00	14.67	1.43	14.67
#FFFFFF	14.67	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295B

Deuteranopia (green-blind)

#002758

Tritanopia (blue-blind)

#272937

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #311b59;
/* rgb */ color: rgb(49, 27, 89);
/* oklch */ color: oklch(29.0% 0.106 295.3);

Tailwind

colors: {
  custom: {
    50: '#6d5988',
    500: '#311b59',
    950: '#000000',
  },
}

SCSS

$custom: #311b59;
$custom-light: #6d5988;
$custom-dark: #000000;

JSON

{
  "hex": "#311b59",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 89
  },
  "hsl": {
    "h": 261.29,
    "s": 53.448,
    "l": 22.745
  },
  "oklch": {
    "l": 0.28988,
    "c": 0.10603,
    "h": 295.3
  },
  "luminance": 0.02158
}

Semantic roles & 50–950 ramp

primary

#311B59

secondary

#738F41

accent

#DD4BA9

background

#F6F5F8

surface

#ECE9F0

border

#C7C5CB

text

#07030B

muted

#7A787C

Preview Lab

Preview with #311B59

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

Preview Lab → · Contrast checker → · Palette generator →