#312FB5#312FB5

#312FB5 is a dark, highly saturated blue. Relative luminance 0.060; OKLCH L 41.1% C 0.202 H 273.6°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#312FB5
RGB	rgb(49, 47, 181)
HSL	hsl(241, 59%, 45%)
HSV	hsv(241, 74%, 71%)
CMYK	cmyk(72.9%, 74%, 0%, 29%)
CIE-LAB	lab(29.47, 44.86, -69.82)
CIE-LCH	lch(29.47, 82.99, 302.72°)
OKLab	oklab(41.11% 0.0126 -0.202)
OKLCH	oklch(41.11% 0.202 273.6)
XYZ	xyz(10.6208, 6.0211, 44.3096)
Luminance	0.0602 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FB5 #B3B52F

analogous

#2F70B5 #312FB5 #742FB5

triadic

#312FB5 #B5312F #2FB531

tetradic

#312FB5 #B52F70 #B3B52F #2FB574

square

#312FB5 #B52F70 #B3B52F #2FB574

split-complementary

#312FB5 #B5742F #70B52F

monochromatic

#171654 #242284 #312FB5 #5250D1 #8280DE

Accessibility & contrast

On white

9.53

#312FB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#312FB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FB5

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FB5	#FFFFFF	#000000	##FFFFFF
##312FB5	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB9

Deuteranopia (green-blind)

#003FB3

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #312fb5;
/* rgb */ color: rgb(49, 47, 181);
/* oklch */ color: oklch(41.1% 0.202 273.6);

Tailwind

colors: {
  custom: {
    50: '#7e69cc',
    500: '#312fb5',
    950: '#000000',
  },
}

SCSS

$custom: #312fb5;
$custom-light: #7e69cc;
$custom-dark: #000000;

JSON

{
  "hex": "#312fb5",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 181
  },
  "hsl": {
    "h": 240.896,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41106,
    "c": 0.20238,
    "h": 273.6
  },
  "luminance": 0.06022
}

Semantic roles & 50–950 ramp

primary

#312FB5

secondary

#C6C779

accent

#E246E0

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #312FB5

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

Preview Lab → · Contrast checker → · Palette generator →