#312FB4#312FB4

#312FB4 is a dark, highly saturated blue. Relative luminance 0.060; OKLCH L 41.0% C 0.201 H 273.7°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#312FB4
RGB	rgb(49, 47, 180)
HSL	hsl(241, 59%, 45%)
HSV	hsv(241, 74%, 71%)
CMYK	cmyk(72.8%, 73.9%, 0%, 29.4%)
CIE-LAB	lab(29.36, 44.53, -69.40)
CIE-LCH	lch(29.36, 82.45, 302.69°)
OKLab	oklab(41% 0.0128 -0.2007)
OKLCH	oklch(41% 0.201 273.7)
XYZ	xyz(10.5186, 5.9802, 43.7711)
Luminance	0.0598 (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

#312FB4 #B2B42F

analogous

#2F70B4 #312FB4 #732FB4

triadic

#312FB4 #B4312F #2FB431

tetradic

#312FB4 #B42F70 #B2B42F #2FB473

square

#312FB4 #B42F70 #B2B42F #2FB473

split-complementary

#312FB4 #B4732F #70B42F

monochromatic

#171653 #242283 #312FB4 #514FD1 #8180DE

Accessibility & contrast

On white

9.56

#312FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#312FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FB4

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FB4	#FFFFFF	#000000	##FFFFFF
##312FB4	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB8

Deuteranopia (green-blind)

#003FB2

Tritanopia (blue-blind)

#00556F

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #312fb4;
/* rgb */ color: rgb(49, 47, 180);
/* oklch */ color: oklch(41.0% 0.201 273.7);

Tailwind

colors: {
  custom: {
    50: '#7d69cc',
    500: '#312fb4',
    950: '#000000',
  },
}

SCSS

$custom: #312fb4;
$custom-light: #7d69cc;
$custom-dark: #000000;

JSON

{
  "hex": "#312fb4",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 180
  },
  "hsl": {
    "h": 240.902,
    "s": 58.59,
    "l": 44.51
  },
  "oklch": {
    "l": 0.41002,
    "c": 0.20115,
    "h": 273.7
  },
  "luminance": 0.05981
}

Semantic roles & 50–950 ramp

primary

#312FB4

secondary

#C5C778

accent

#E246DF

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #312FB4

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

Preview Lab → · Contrast checker → · Palette generator →