#312FA8#312FA8

#312FA8 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.8% C 0.186 H 274.6°. Best body text is #FFFFFF at 9.99:1 contrast (WCAG AA passes).

Color values

HEX	#312FA8
RGB	rgb(49, 47, 168)
HSL	hsl(241, 56%, 42%)
HSV	hsv(241, 72%, 66%)
CMYK	cmyk(70.8%, 72%, 0%, 34.1%)
CIE-LAB	lab(28.15, 40.51, -64.21)
CIE-LCH	lch(28.15, 75.92, 302.25°)
OKLab	oklab(39.77% 0.0149 -0.1856)
OKLCH	oklch(39.77% 0.186 274.6)
XYZ	xyz(9.3487, 5.5123, 37.6095)
Luminance	0.0551 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#312FA8 #A6A82F

analogous

#2F69A8 #312FA8 #6E2FA8

triadic

#312FA8 #A8312F #2FA831

tetradic

#312FA8 #A82F69 #A6A82F #2FA86E

square

#312FA8 #A82F69 #A6A82F #2FA86E

split-complementary

#312FA8 #A86E2F #69A82F

monochromatic

#151448 #232278 #312FA8 #4A48CC #7A78D9

Accessibility & contrast

On white

9.99

#312FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#312FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #312FA8

9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##312FA8	#FFFFFF	#000000	##FFFFFF
##312FA8	1.00	9.99	2.10	9.99
#FFFFFF	9.99	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	9.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AC

Deuteranopia (green-blind)

#003DA6

Tritanopia (blue-blind)

#005168

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #312fa8;
/* rgb */ color: rgb(49, 47, 168);
/* oklch */ color: oklch(39.8% 0.186 274.6);

Tailwind

colors: {
  custom: {
    50: '#7b69c3',
    500: '#312fa8',
    950: '#000000',
  },
}

SCSS

$custom: #312fa8;
$custom-light: #7b69c3;
$custom-dark: #000000;

JSON

{
  "hex": "#312fa8",
  "rgb": {
    "r": 49,
    "g": 47,
    "b": 168
  },
  "hsl": {
    "h": 240.992,
    "s": 56.279,
    "l": 42.157
  },
  "oklch": {
    "l": 0.39771,
    "c": 0.18623,
    "h": 274.6
  },
  "luminance": 0.05513
}

Semantic roles & 50–950 ramp

primary

#312FA8

secondary

#C0C171

accent

#E048DD

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #312FA8

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

Preview Lab → · Contrast checker → · Palette generator →