#310B42#310B42

#310B42 is a very dark, moderate purple. Relative luminance 0.013; OKLCH L 24.7% C 0.101 H 312.9°. Best body text is #FFFFFF at 16.70:1 contrast (WCAG AA passes).

Color values

HEX	#310B42
RGB	rgb(49, 11, 66)
HSL	hsl(281, 71%, 15%)
HSV	hsv(281, 83%, 26%)
CMYK	cmyk(25.8%, 83.3%, 0%, 74.1%)
CIE-LAB	lab(11.18, 28.93, -26.06)
CIE-LCH	lch(11.18, 38.94, 317.98°)
OKLab	oklab(24.72% 0.0685 -0.0736)
OKLCH	oklch(24.72% 0.101 312.9)
XYZ	xyz(2.3695, 1.2857, 5.2766)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B42 #1C420B

analogous

#160B42 #310B42 #420B37

triadic

#310B42 #42310B #0B4231

tetradic

#310B42 #42160B #1C420B #0B3742

square

#310B42 #42160B #1C420B #0B3742

split-complementary

#310B42 #37420B #0B4216

monochromatic

#13041A #13041A #310B42 #581476 #7F1CAB

Accessibility & contrast

On white

16.70

#310B42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#310B42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B42

16.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B42	#FFFFFF	#000000	##FFFFFF
##310B42	1.00	16.70	1.26	16.70
#FFFFFF	16.70	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C44

Deuteranopia (green-blind)

#061F41

Tritanopia (blue-blind)

#2F1726

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #310b42;
/* rgb */ color: rgb(49, 11, 66);
/* oklch */ color: oklch(24.7% 0.101 312.9);

Tailwind

colors: {
  custom: {
    50: '#6c4e77',
    500: '#310b42',
    950: '#000000',
  },
}

SCSS

$custom: #310b42;
$custom-light: #6c4e77;
$custom-dark: #000000;

JSON

{
  "hex": "#310b42",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 66
  },
  "hsl": {
    "h": 281.455,
    "s": 71.429,
    "l": 15.098
  },
  "oklch": {
    "l": 0.24715,
    "c": 0.1006,
    "h": 312.9
  },
  "luminance": 0.01286
}

Semantic roles & 50–950 ramp

primary

#310B42

secondary

#447F2A

accent

#EE3A71

background

#F6F4F7

surface

#EBE7ED

border

#C6C3C8

text

#070208

muted

#7A787B

Preview Lab

Preview with #310B42

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

Preview Lab → · Contrast checker → · Palette generator →