#311D80#311D80

#311D80 is a dark, vivid violet. Relative luminance 0.031; OKLCH L 33.0% C 0.155 H 283.2°. Best body text is #FFFFFF at 12.98:1 contrast (WCAG AA passes).

Color values

HEX	#311D80
RGB	rgb(49, 29, 128)
HSL	hsl(252, 63%, 31%)
HSV	hsv(252, 77%, 50%)
CMYK	cmyk(61.7%, 77.3%, 0%, 49.8%)
CIE-LAB	lab(20.40, 37.68, -52.28)
CIE-LCH	lch(20.40, 64.44, 305.78°)
OKLab	oklab(33.05% 0.0353 -0.1507)
OKLCH	oklch(33.05% 0.155 283.2)
XYZ	xyz(5.6011, 3.0898, 20.7191)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#311D80 #6C801D

analogous

#1D3A80 #311D80 #621D80

triadic

#311D80 #80311D #1D8031

tetradic

#311D80 #801D3A #6C801D #1D8062

square

#311D80 #801D3A #6C801D #1D8062

split-complementary

#311D80 #80621D #3A801D

monochromatic

#0B061C #1E124E #311D80 #4428B2 #6043D4

Accessibility & contrast

On white

12.98

#311D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#311D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #311D80

12.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##311D80	#FFFFFF	#000000	##FFFFFF
##311D80	1.00	12.98	1.62	12.98
#FFFFFF	12.98	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003483

Deuteranopia (green-blind)

#002E7E

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #311d80;
/* rgb */ color: rgb(49, 29, 128);
/* oklch */ color: oklch(33.0% 0.155 283.2);

Tailwind

colors: {
  custom: {
    50: '#745ca6',
    500: '#311d80',
    950: '#000000',
  },
}

SCSS

$custom: #311d80;
$custom-light: #745ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#311d80",
  "rgb": {
    "r": 49,
    "g": 29,
    "b": 128
  },
  "hsl": {
    "h": 252.121,
    "s": 63.057,
    "l": 30.784
  },
  "oklch": {
    "l": 0.33046,
    "c": 0.15476,
    "h": 283.2
  },
  "luminance": 0.0309
}

Semantic roles & 50–950 ramp

primary

#311D80

secondary

#9DB345

accent

#E642C5

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#09040F

muted

#7B797F

Preview Lab

Preview with #311D80

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

Preview Lab → · Contrast checker → · Palette generator →