#312CA1#312CA1

#312CA1 is a dark, vivid blue. Relative luminance 0.050; OKLCH L 38.6% C 0.181 H 275.7°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#312CA1
RGB	rgb(49, 44, 161)
HSL	hsl(243, 57%, 40%)
HSV	hsv(243, 73%, 63%)
CMYK	cmyk(69.6%, 72.7%, 0%, 36.9%)
CIE-LAB	lab(26.81, 39.92, -62.18)
CIE-LCH	lch(26.81, 73.89, 302.70°)
OKLab	oklab(38.61% 0.0179 -0.1797)
OKLCH	oklch(38.61% 0.181 275.7)
XYZ	xyz(8.5982, 5.0268, 34.2284)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312CA1 #9CA12C

analogous

#2C62A1 #312CA1 #6B2CA1

triadic

#312CA1 #A1312C #2CA131

tetradic

#312CA1 #A12C62 #9CA12C #2CA16B

square

#312CA1 #A12C62 #9CA12C #2CA16B

split-complementary

#312CA1 #A16B2C #62A12C

monochromatic

#141241 #221F71 #312CA1 #4540CB #7470D8

Accessibility & contrast

On white

10.47

#312CA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#312CA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312CA1

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312CA1	#FFFFFF	#000000	##FFFFFF
##312CA1	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0045A4

Deuteranopia (green-blind)

#003A9F

Tritanopia (blue-blind)

#004D63

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #312ca1;
/* rgb */ color: rgb(49, 44, 161);
/* oklch */ color: oklch(38.6% 0.181 275.7);

Tailwind

colors: {
  custom: {
    50: '#7966be',
    500: '#312ca1',
    950: '#000000',
  },
}

SCSS

$custom: #312ca1;
$custom-light: #7966be;
$custom-dark: #000000;

JSON

{
  "hex": "#312ca1",
  "rgb": {
    "r": 49,
    "g": 44,
    "b": 161
  },
  "hsl": {
    "h": 242.564,
    "s": 57.073,
    "l": 40.196
  },
  "oklch": {
    "l": 0.38606,
    "c": 0.18058,
    "h": 275.7
  },
  "luminance": 0.05028
}

Semantic roles & 50–950 ramp

primary

#312CA1

secondary

#BBBF6A

accent

#E047DA

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #312CA1

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

Preview Lab → · Contrast checker → · Palette generator →