#312579#312579

#312579 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.6% C 0.136 H 282.7°. Best body text is #FFFFFF at 12.56:1 contrast (WCAG AA passes).

Color values

HEX	#312579
RGB	rgb(49, 37, 121)
HSL	hsl(249, 53%, 31%)
HSV	hsv(249, 69%, 47%)
CMYK	cmyk(59.5%, 69.4%, 0%, 52.5%)
CIE-LAB	lab(21.42, 30.68, -46.16)
CIE-LCH	lch(21.42, 55.42, 303.61°)
OKLab	oklab(33.56% 0.03 -0.1328)
OKLCH	oklch(33.56% 0.136 282.7)
XYZ	xyz(5.3783, 3.3562, 18.4499)
Luminance	0.0336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312579 #6D7925

analogous

#254379 #312579 #5B2579

triadic

#312579 #793125 #257931

tetradic

#312579 #792543 #6D7925 #25795B

square

#312579 #792543 #6D7925 #25795B

split-complementary

#312579 #795B25 #437925

monochromatic

#0B081B #1E174A #312579 #4433A8 #614FC9

Accessibility & contrast

On white

12.56

#312579 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.67

#312579 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312579

12.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312579	#FFFFFF	#000000	##FFFFFF
##312579	1.00	12.56	1.67	12.56
#FFFFFF	12.56	1.00	21.00	1.00
#000000	1.67	21.00	1.00	21.00
##FFFFFF	12.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367C

Deuteranopia (green-blind)

#003077

Tritanopia (blue-blind)

#0A3B4B

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #312579;
/* rgb */ color: rgb(49, 37, 121);
/* oklch */ color: oklch(33.6% 0.136 282.7);

Tailwind

colors: {
  custom: {
    50: '#7260a0',
    500: '#312579',
    950: '#000000',
  },
}

SCSS

$custom: #312579;
$custom-light: #7260a0;
$custom-dark: #000000;

JSON

{
  "hex": "#312579",
  "rgb": {
    "r": 49,
    "g": 37,
    "b": 121
  },
  "hsl": {
    "h": 248.571,
    "s": 53.165,
    "l": 30.98
  },
  "oklch": {
    "l": 0.33564,
    "c": 0.13614,
    "h": 282.7
  },
  "luminance": 0.03357
}

Semantic roles & 50–950 ramp

primary

#312579

secondary

#9EAB4E

accent

#DD4BC8

background

#F7F5FA

surface

#EDE9F3

border

#C8C5CD

text

#08050F

muted

#7B797F

Preview Lab

Preview with #312579

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

Preview Lab → · Contrast checker → · Palette generator →