#312FAA#312FAA

#312FAA is a dark, vivid blue. Relative luminance 0.056; OKLCH L 40.0% C 0.189 H 274.4°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Color values

HEX	#312FAA
RGB	rgb(49, 47, 170)
HSL	hsl(241, 57%, 43%)
HSV	hsv(241, 72%, 67%)
CMYK	cmyk(71.2%, 72.4%, 0%, 33.3%)
CIE-LAB	lab(28.35, 41.19, -65.09)
CIE-LCH	lch(28.35, 77.02, 302.33°)
OKLab	oklab(39.97% 0.0146 -0.1882)
OKLCH	oklch(39.97% 0.189 274.4)
XYZ	xyz(9.5364, 5.5874, 38.5983)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FAA #A8AA2F

analogous

#2F6AAA #312FAA #6F2FAA

triadic

#312FAA #AA312F #2FAA31

tetradic

#312FAA #AA2F6A #A8AA2F #2FAA6F

square

#312FAA #AA2F6A #A8AA2F #2FAA6F

split-complementary

#312FAA #AA6F2F #6AAA2F

monochromatic

#15144A #23227A #312FAA #4C49CD #7B79DA

Accessibility & contrast

On white

9.92

#312FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#312FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FAA

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FAA	#FFFFFF	#000000	##FFFFFF
##312FAA	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AE

Deuteranopia (green-blind)

#003DA8

Tritanopia (blue-blind)

#005269

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312faa;
/* rgb */ color: rgb(49, 47, 170);
/* oklch */ color: oklch(40.0% 0.189 274.4);

Tailwind

colors: {
  custom: {
    50: '#7b69c4',
    500: '#312faa',
    950: '#000000',
  },
}

SCSS

$custom: #312faa;
$custom-light: #7b69c4;
$custom-dark: #000000;

JSON

{
  "hex": "#312faa",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 170
  },
  "hsl": {
    "h": 240.976,
    "s": 56.682,
    "l": 42.549
  },
  "oklch": {
    "l": 0.39974,
    "c": 0.18875,
    "h": 274.4
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#312FAA

secondary

#C1C272

accent

#E048DD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312FAA

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

Preview Lab → · Contrast checker → · Palette generator →