#312571#312571

#312571 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.8% C 0.125 H 284.3°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#312571
RGB	rgb(49, 37, 113)
HSL	hsl(249, 51%, 29%)
HSV	hsv(249, 67%, 44%)
CMYK	cmyk(56.6%, 67.3%, 0%, 55.7%)
CIE-LAB	lab(20.70, 27.98, -42.20)
CIE-LCH	lch(20.70, 50.63, 303.55°)
OKLab	oklab(32.83% 0.031 -0.1212)
OKLCH	oklch(32.83% 0.125 284.3)
XYZ	xyz(4.9079, 3.1681, 15.9725)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312571 #657125

analogous

#253F71 #312571 #572571

triadic

#312571 #713125 #257131

tetradic

#312571 #71253F #657125 #257157

square

#312571 #71253F #657125 #257157

split-complementary

#312571 #715725 #3F7125

monochromatic

#0A0817 #1D1643 #312571 #45349F #5F4CC4

Accessibility & contrast

On white

12.86

#312571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#312571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312571

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312571	#FFFFFF	#000000	##FFFFFF
##312571	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003473

Deuteranopia (green-blind)

#002F6F

Tritanopia (blue-blind)

#153847

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #312571;
/* rgb */ color: rgb(49, 37, 113);
/* oklch */ color: oklch(32.8% 0.125 284.3);

Tailwind

colors: {
  custom: {
    50: '#70609a',
    500: '#312571',
    950: '#000000',
  },
}

SCSS

$custom: #312571;
$custom-light: #70609a;
$custom-dark: #000000;

JSON

{
  "hex": "#312571",
  "rgb": {
    "r": 49,
    "g": 37,
    "b": 113
  },
  "hsl": {
    "h": 249.474,
    "s": 50.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32826,
    "c": 0.12506,
    "h": 284.3
  },
  "luminance": 0.03168
}

Semantic roles & 50–950 ramp

primary

#312571

secondary

#96A44E

accent

#DA4EC4

background

#F7F5F9

surface

#EDE9F2

border

#C8C5CC

text

#08050E

muted

#7B797E

Preview Lab

Preview with #312571

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

Preview Lab → · Contrast checker → · Palette generator →