#312591#312591

#312591 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.9% C 0.168 H 278.8°. Best body text is #FFFFFF at 11.64:1 contrast (WCAG AA passes).

Color values

HEX	#312591
RGB	rgb(49, 37, 145)
HSL	hsl(247, 59%, 36%)
HSV	hsv(247, 74%, 57%)
CMYK	cmyk(66.2%, 74.5%, 0%, 43.1%)
CIE-LAB	lab(23.74, 38.68, -57.43)
CIE-LCH	lch(23.74, 69.24, 303.96°)
OKLab	oklab(35.93% 0.0256 -0.1658)
OKLCH	oklch(35.93% 0.168 278.8)
XYZ	xyz(7.0374, 4.0199, 27.1876)
Luminance	0.0402 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312591 #859125

analogous

#254F91 #312591 #672591

triadic

#312591 #913125 #259131

tetradic

#312591 #91254F #859125 #259167

square

#312591 #91254F #859125 #259167

split-complementary

#312591 #916725 #4F9125

monochromatic

#100C2F #211960 #312591 #4131C2 #695BD5

Accessibility & contrast

On white

11.64

#312591 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#312591 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312591

11.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312591	#FFFFFF	#000000	##FFFFFF
##312591	1.00	11.64	1.80	11.64
#FFFFFF	11.64	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D94

Deuteranopia (green-blind)

#00348F

Tritanopia (blue-blind)

#004359

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #312591;
/* rgb */ color: rgb(49, 37, 145);
/* oklch */ color: oklch(35.9% 0.168 278.8);

Tailwind

colors: {
  custom: {
    50: '#7761b2',
    500: '#312591',
    950: '#000000',
  },
}

SCSS

$custom: #312591;
$custom-light: #7761b2;
$custom-dark: #000000;

JSON

{
  "hex": "#312591",
  "rgb": {
    "r": 49,
    "g": 37,
    "b": 145
  },
  "hsl": {
    "h": 246.667,
    "s": 59.341,
    "l": 35.686
  },
  "oklch": {
    "l": 0.35931,
    "c": 0.16775,
    "h": 278.8
  },
  "luminance": 0.0402
}

Semantic roles & 50–950 ramp

primary

#312591

secondary

#AFBA58

accent

#E345D1

background

#F7F5FB

surface

#EEEAF6

border

#C9C6D0

text

#0A0511

muted

#7C7980

Preview Lab

Preview with #312591

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

Preview Lab → · Contrast checker → · Palette generator →