#312FA9#312FA9

#312FA9 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.9% C 0.187 H 274.5°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#312FA9
RGB	rgb(49, 47, 169)
HSL	hsl(241, 56%, 42%)
HSV	hsv(241, 72%, 66%)
CMYK	cmyk(71%, 72.2%, 0%, 33.7%)
CIE-LAB	lab(28.25, 40.85, -64.65)
CIE-LCH	lch(28.25, 76.47, 302.29°)
OKLab	oklab(39.87% 0.0147 -0.1869)
OKLCH	oklch(39.87% 0.187 274.5)
XYZ	xyz(9.4422, 5.5497, 38.1020)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FA9 #A7A92F

analogous

#2F6AA9 #312FA9 #6E2FA9

triadic

#312FA9 #A9312F #2FA931

tetradic

#312FA9 #A92F6A #A7A92F #2FA96E

square

#312FA9 #A92F6A #A7A92F #2FA96E

split-complementary

#312FA9 #A96E2F #6AA92F

monochromatic

#151449 #232279 #312FA9 #4B49CC #7A79DA

Accessibility & contrast

On white

9.95

#312FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#312FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FA9

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FA9	#FFFFFF	#000000	##FFFFFF
##312FA9	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AD

Deuteranopia (green-blind)

#003DA7

Tritanopia (blue-blind)

#005169

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #312fa9;
/* rgb */ color: rgb(49, 47, 169);
/* oklch */ color: oklch(39.9% 0.187 274.5);

Tailwind

colors: {
  custom: {
    50: '#7b69c4',
    500: '#312fa9',
    950: '#000000',
  },
}

SCSS

$custom: #312fa9;
$custom-light: #7b69c4;
$custom-dark: #000000;

JSON

{
  "hex": "#312fa9",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 169
  },
  "hsl": {
    "h": 240.984,
    "s": 56.481,
    "l": 42.353
  },
  "oklch": {
    "l": 0.39872,
    "c": 0.18749,
    "h": 274.5
  },
  "luminance": 0.05551
}

Semantic roles & 50–950 ramp

primary

#312FA9

secondary

#C1C272

accent

#E048DD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312FA9

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

Preview Lab → · Contrast checker → · Palette generator →