#311F71#311F71

#311F71 is a dark, vivid violet. Relative luminance 0.028; OKLCH L 31.8% C 0.133 H 286.2°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#311F71
RGB	rgb(49, 31, 113)
HSL	hsl(253, 57%, 28%)
HSV	hsv(253, 73%, 44%)
CMYK	cmyk(56.6%, 72.6%, 0%, 55.7%)
CIE-LAB	lab(19.33, 31.72, -44.44)
CIE-LCH	lch(19.33, 54.60, 305.51°)
OKLab	oklab(31.84% 0.0371 -0.1277)
OKLCH	oklch(31.84% 0.133 286.2)
XYZ	xyz(4.7364, 2.8249, 15.9153)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311F71 #5F711F

analogous

#1F3671 #311F71 #5A1F71

triadic

#311F71 #71311F #1F7131

tetradic

#311F71 #711F36 #5F711F #1F715A

square

#311F71 #711F36 #5F711F #1F715A

split-complementary

#311F71 #715A1F #36711F

monochromatic

#0A0718 #1C1241 #311F71 #462CA1 #5E40CB

Accessibility & contrast

On white

13.42

#311F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#311F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311F71

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311F71	#FFFFFF	#000000	##FFFFFF
##311F71	1.00	13.42	1.57	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003173

Deuteranopia (green-blind)

#002C6F

Tritanopia (blue-blind)

#163445

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #311f71;
/* rgb */ color: rgb(49, 31, 113);
/* oklch */ color: oklch(31.8% 0.133 286.2);

Tailwind

colors: {
  custom: {
    50: '#715c9b',
    500: '#311f71',
    950: '#000000',
  },
}

SCSS

$custom: #311f71;
$custom-light: #715c9b;
$custom-dark: #000000;

JSON

{
  "hex": "#311f71",
  "rgb": {
    "r": 49,
    "g": 31,
    "b": 113
  },
  "hsl": {
    "h": 253.171,
    "s": 56.944,
    "l": 28.235
  },
  "oklch": {
    "l": 0.31835,
    "c": 0.13302,
    "h": 286.2
  },
  "luminance": 0.02825
}

Semantic roles & 50–950 ramp

primary

#311F71

secondary

#90A547

accent

#E048BF

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08040E

muted

#7B797E

Preview Lab

Preview with #311F71

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

Preview Lab → · Contrast checker → · Palette generator →