#311B7D#311B7D

#311B7D is a dark, vivid violet. Relative luminance 0.029; OKLCH L 32.5% C 0.153 H 284.2°. Best body text is #FFFFFF at 13.26:1 contrast (WCAG AA passes).

Color values

HEX	#311B7D
RGB	rgb(49, 27, 125)
HSL	hsl(253, 64%, 30%)
HSV	hsv(253, 78%, 49%)
CMYK	cmyk(60.8%, 78.4%, 0%, 51%)
CIE-LAB	lab(19.71, 37.81, -51.51)
CIE-LCH	lch(19.71, 63.90, 306.28°)
OKLab	oklab(32.47% 0.0376 -0.1484)
OKLCH	oklch(32.47% 0.153 284.2)
XYZ	xyz(5.3591, 2.9172, 19.6787)
Luminance	0.0292 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B7D #677D1B

analogous

#1B367D #311B7D #621B7D

triadic

#311B7D #7D311B #1B7D31

tetradic

#311B7D #7D1B36 #677D1B #1B7D62

square

#311B7D #7D1B36 #677D1B #1B7D62

split-complementary

#311B7D #7D621B #367D1B

monochromatic

#0A0519 #1D104B #311B7D #4526AF #5F3DD5

Accessibility & contrast

On white

13.26

#311B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#311B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B7D

13.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B7D	#FFFFFF	#000000	##FFFFFF
##311B7D	1.00	13.26	1.58	13.26
#FFFFFF	13.26	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003280

Deuteranopia (green-blind)

#002C7B

Tritanopia (blue-blind)

#03374B

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #311b7d;
/* rgb */ color: rgb(49, 27, 125);
/* oklch */ color: oklch(32.5% 0.153 284.2);

Tailwind

colors: {
  custom: {
    50: '#735aa4',
    500: '#311b7d',
    950: '#000000',
  },
}

SCSS

$custom: #311b7d;
$custom-light: #735aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#311b7d",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 125
  },
  "hsl": {
    "h": 253.469,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.32467,
    "c": 0.15311,
    "h": 284.2
  },
  "luminance": 0.02918
}

Semantic roles & 50–950 ramp

primary

#311B7D

secondary

#98B143

accent

#E740C2

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311B7D

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

Preview Lab → · Contrast checker → · Palette generator →