#310B45#310B45

#310B45 is a very dark, moderate violet. Relative luminance 0.013; OKLCH L 25.0% C 0.104 H 310.8°. Best body text is #FFFFFF at 16.61:1 contrast (WCAG AA passes).

Color values

HEX	#310B45
RGB	rgb(49, 11, 69)
HSL	hsl(279, 73%, 16%)
HSV	hsv(279, 84%, 27%)
CMYK	cmyk(29%, 84.1%, 0%, 72.9%)
CIE-LAB	lab(11.43, 29.68, -27.76)
CIE-LCH	lch(11.43, 40.64, 316.91°)
OKLab	oklab(24.97% 0.068 -0.0786)
OKLCH	oklch(24.97% 0.104 310.8)
XYZ	xyz(2.4603, 1.3220, 5.7546)
Luminance	0.0132 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B45 #1F450B

analogous

#140B45 #310B45 #450B3C

triadic

#310B45 #45310B #0B4531

tetradic

#310B45 #45140B #1F450B #0B3C45

square

#310B45 #45140B #1F450B #0B3C45

split-complementary

#310B45 #3C450B #0B4514

monochromatic

#13041A #13041A #310B45 #56137A #7C1CAF

Accessibility & contrast

On white

16.61

#310B45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#310B45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B45

16.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B45	#FFFFFF	#000000	##FFFFFF
##310B45	1.00	16.61	1.26	16.61
#FFFFFF	16.61	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D47

Deuteranopia (green-blind)

#021F44

Tritanopia (blue-blind)

#2E1927

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #310b45;
/* rgb */ color: rgb(49, 11, 69);
/* oklch */ color: oklch(25.0% 0.104 310.8);

Tailwind

colors: {
  custom: {
    50: '#6c4f79',
    500: '#310b45',
    950: '#000000',
  },
}

SCSS

$custom: #310b45;
$custom-light: #6c4f79;
$custom-dark: #000000;

JSON

{
  "hex": "#310b45",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 69
  },
  "hsl": {
    "h": 279.31,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.24974,
    "c": 0.10394,
    "h": 310.8
  },
  "luminance": 0.01322
}

Semantic roles & 50–950 ramp

primary

#310B45

secondary

#48812A

accent

#EF3978

background

#F6F4F7

surface

#ECE7ED

border

#C7C3C8

text

#070209

muted

#7A787B

Preview Lab

Preview with #310B45

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

Preview Lab → · Contrast checker → · Palette generator →