#312BB9#312BB9

#312BB9 is a dark, highly saturated blue. Relative luminance 0.059; OKLCH L 41.0% C 0.211 H 273.7°. Best body text is #FFFFFF at 9.65:1 contrast (WCAG AA passes).

Color values

HEX	#312BB9
RGB	rgb(49, 43, 185)
HSL	hsl(243, 62%, 45%)
HSV	hsv(243, 77%, 73%)
CMYK	cmyk(73.5%, 76.8%, 0%, 27.5%)
CIE-LAB	lab(29.11, 48.35, -72.78)
CIE-LCH	lch(29.11, 87.37, 303.60°)
OKLab	oklab(40.98% 0.0137 -0.2105)
OKLCH	oklch(40.98% 0.211 273.7)
XYZ	xyz(10.8845, 5.8824, 46.4513)
Luminance	0.0588 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312BB9 #B3B92B

analogous

#2B6CB9 #312BB9 #782BB9

triadic

#312BB9 #B9312B #2BB931

tetradic

#312BB9 #B92B6C #B3B92B #2BB978

square

#312BB9 #B92B6C #B3B92B #2BB978

split-complementary

#312BB9 #B9782B #6CB92B

monochromatic

#171456 #241F87 #312BB9 #524CD5 #827EE1

Accessibility & contrast

On white

9.65

#312BB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#312BB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312BB9

9.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312BB9	#FFFFFF	#000000	##FFFFFF
##312BB9	1.00	9.65	2.18	9.65
#FFFFFF	9.65	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BBD

Deuteranopia (green-blind)

#003EB7

Tritanopia (blue-blind)

#005571

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #312bb9;
/* rgb */ color: rgb(49, 43, 185);
/* oklch */ color: oklch(41.0% 0.211 273.7);

Tailwind

colors: {
  custom: {
    50: '#7f67cf',
    500: '#312bb9',
    950: '#000000',
  },
}

SCSS

$custom: #312bb9;
$custom-light: #7f67cf;
$custom-dark: #000000;

JSON

{
  "hex": "#312bb9",
  "rgb": {
    "r": 49,
    "g": 43,
    "b": 185
  },
  "hsl": {
    "h": 242.535,
    "s": 62.281,
    "l": 44.706
  },
  "oklch": {
    "l": 0.40982,
    "c": 0.211,
    "h": 273.7
  },
  "luminance": 0.05884
}

Semantic roles & 50–950 ramp

primary

#312BB9

secondary

#C6C976

accent

#E542DE

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #312BB9

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

Preview Lab → · Contrast checker → · Palette generator →