#311B4E#311B4E

#311B4E is a dark, moderate violet. Relative luminance 0.020; OKLCH L 28.1% C 0.091 H 300.5°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#311B4E
RGB	rgb(49, 27, 78)
HSL	hsl(266, 49%, 21%)
HSV	hsv(266, 65%, 31%)
CMYK	cmyk(37.2%, 65.4%, 0%, 69.4%)
CIE-LAB	lab(15.42, 23.18, -27.56)
CIE-LCH	lch(15.42, 36.01, 310.06°)
OKLab	oklab(28.07% 0.0461 -0.0781)
OKLCH	oklch(28.07% 0.091 300.5)
XYZ	xyz(3.0334, 1.9869, 7.4299)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B4E #384E1B

analogous

#1B1F4E #311B4E #4A1B4E

triadic

#311B4E #4E311B #1B4E31

tetradic

#311B4E #4E1B1F #384E1B #1B4E4A

square

#311B4E #4E1B1F #384E1B #1B4E4A

split-complementary

#311B4E #4E4A1B #1F4E1B

monochromatic

#0E0817 #140B21 #311B4E #4E2B7B #6A3AA9

Accessibility & contrast

On white

15.03

#311B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#311B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B4E

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B4E	#FFFFFF	#000000	##FFFFFF
##311B4E	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#022650

Deuteranopia (green-blind)

#0B264D

Tritanopia (blue-blind)

#2B2631

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #311b4e;
/* rgb */ color: rgb(49, 27, 78);
/* oklch */ color: oklch(28.1% 0.091 300.5);

Tailwind

colors: {
  custom: {
    50: '#6c5880',
    500: '#311b4e',
    950: '#000000',
  },
}

SCSS

$custom: #311b4e;
$custom-light: #6c5880;
$custom-dark: #000000;

JSON

{
  "hex": "#311b4e",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 78
  },
  "hsl": {
    "h": 265.882,
    "s": 48.571,
    "l": 20.588
  },
  "oklch": {
    "l": 0.28072,
    "c": 0.09072,
    "h": 300.5
  },
  "luminance": 0.01987
}

Semantic roles & 50–950 ramp

primary

#311B4E

secondary

#678441

accent

#D8509D

background

#F6F5F7

surface

#EBE9EE

border

#C6C5C9

text

#07030A

muted

#7A787C

Preview Lab

Preview with #311B4E

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

Preview Lab → · Contrast checker → · Palette generator →