#311B68#311B68

#311B68 is a dark, vivid violet. Relative luminance 0.024; OKLCH L 30.4% C 0.126 H 289.8°. Best body text is #FFFFFF at 14.12:1 contrast (WCAG AA passes).

Color values

HEX	#311B68
RGB	rgb(49, 27, 104)
HSL	hsl(257, 59%, 26%)
HSV	hsv(257, 74%, 41%)
CMYK	cmyk(52.9%, 74%, 0%, 59.2%)
CIE-LAB	lab(17.63, 31.21, -41.37)
CIE-LCH	lch(17.63, 51.82, 307.03°)
OKLab	oklab(30.36% 0.0429 -0.1187)
OKLCH	oklch(30.36% 0.126 289.8)
XYZ	xyz(4.1565, 2.4361, 13.3452)
Luminance	0.0244 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 6.78

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311B68 #52681B

analogous

#1B2B68 #311B68 #571B68

triadic

#311B68 #68311B #1B6831

tetradic

#311B68 #681B2B #52681B #1B6857

square

#311B68 #681B2B #52681B #1B6857

split-complementary

#311B68 #68571B #2B681B

monochromatic

#0B0618 #1A0E37 #311B68 #482899 #5F34C9

Accessibility & contrast

On white

14.12

#311B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#311B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311B68

14.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311B68	#FFFFFF	#000000	##FFFFFF
##311B68	1.00	14.12	1.49	14.12
#FFFFFF	14.12	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D6A

Deuteranopia (green-blind)

#002966

Tritanopia (blue-blind)

#1E2F3F

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #311b68;
/* rgb */ color: rgb(49, 27, 104);
/* oklch */ color: oklch(30.4% 0.126 289.8);

Tailwind

colors: {
  custom: {
    50: '#6f5994',
    500: '#311b68',
    950: '#000000',
  },
}

SCSS

$custom: #311b68;
$custom-light: #6f5994;
$custom-dark: #000000;

JSON

{
  "hex": "#311b68",
  "rgb": {
    "r": 49,
    "g": 27,
    "b": 104
  },
  "hsl": {
    "h": 257.143,
    "s": 58.779,
    "l": 25.686
  },
  "oklch": {
    "l": 0.30359,
    "c": 0.12622,
    "h": 289.8
  },
  "luminance": 0.02436
}

Semantic roles & 50–950 ramp

primary

#311B68

secondary

#839D42

accent

#E246B5

background

#F7F5F9

surface

#EDE9F1

border

#C8C5CB

text

#08040D

muted

#7B797E

Preview Lab

Preview with #311B68

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

Preview Lab → · Contrast checker → · Palette generator →