#311B7A#311B7A

#311B7A is a dark, vivid violet. Relative luminance 0.028; OKLCH L 32.2% C 0.149 H 284.9°. Best body text is #FFFFFF at 13.39:1 contrast (WCAG AA passes).

Color values

HEX	#311B7A
RGB	rgb(49, 27, 122)
HSL	hsl(254, 64%, 29%)
HSV	hsv(254, 78%, 48%)
CMYK	cmyk(59.8%, 77.9%, 0%, 52.2%)
CIE-LAB	lab(19.40, 36.87, -50.11)
CIE-LCH	lch(19.40, 62.21, 306.35°)
OKLab	oklab(32.15% 0.0385 -0.1443)
OKLCH	oklch(32.15% 0.149 284.9)
XYZ	xyz(5.1703, 2.8417, 18.6846)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B7A #647A1B

analogous

#1B357A #311B7A #611B7A

triadic

#311B7A #7A311B #1B7A31

tetradic

#311B7A #7A1B35 #647A1B #1B7A61

square

#311B7A #7A1B35 #647A1B #1B7A61

split-complementary

#311B7A #7A611B #357A1B

monochromatic

#0A0619 #1D1048 #311B7A #4526AC #5F3CD4

Accessibility & contrast

On white

13.39

#311B7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#311B7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B7A

13.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B7A	#FFFFFF	#000000	##FFFFFF
##311B7A	1.00	13.39	1.57	13.39
#FFFFFF	13.39	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00327D

Deuteranopia (green-blind)

#002C78

Tritanopia (blue-blind)

#0A3649

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311b7a;
/* rgb */ color: rgb(49, 27, 122);
/* oklch */ color: oklch(32.2% 0.149 284.9);

Tailwind

colors: {
  custom: {
    50: '#735aa1',
    500: '#311b7a',
    950: '#000000',
  },
}

SCSS

$custom: #311b7a;
$custom-light: #735aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#311b7a",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 122
  },
  "hsl": {
    "h": 253.895,
    "s": 63.758,
    "l": 29.216
  },
  "oklch": {
    "l": 0.32154,
    "c": 0.14936,
    "h": 284.9
  },
  "luminance": 0.02842
}

Semantic roles & 50–950 ramp

primary

#311B7A

secondary

#95AE43

accent

#E741C0

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311B7A

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

Preview Lab → · Contrast checker → · Palette generator →