#313CA9#313CA9

#313CA9 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.0% C 0.173 H 272.1°. Best body text is #FFFFFF at 8.94:1 contrast (WCAG AA passes).

Color values

HEX	#313CA9
RGB	rgb(49, 60, 169)
HSL	hsl(235, 55%, 43%)
HSV	hsv(235, 71%, 66%)
CMYK	cmyk(71%, 64.5%, 0%, 33.7%)
CIE-LAB	lab(31.23, 32.80, -59.76)
CIE-LCH	lch(31.23, 68.17, 298.76°)
OKLab	oklab(42.03% 0.0063 -0.1726)
OKLCH	oklch(42.03% 0.173 272.1)
XYZ	xyz(10.0415, 6.7483, 38.3018)
Luminance	0.0675 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313CA9 #A99E31

analogous

#3178A9 #313CA9 #6231A9

triadic

#313CA9 #A9313C #3CA931

tetradic

#313CA9 #A93178 #A99E31 #31A962

square

#313CA9 #A93178 #A99E31 #31A962

split-complementary

#313CA9 #A96231 #78A931

monochromatic

#151A4A #232B7A #313CA9 #4C58CB #7C84D9

Accessibility & contrast

On white

8.94

#313CA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#313CA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CA9

8.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CA9	#FFFFFF	#000000	##FFFFFF
##313CA9	1.00	8.94	2.35	8.94
#FFFFFF	8.94	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAC

Deuteranopia (green-blind)

#0044A7

Tritanopia (blue-blind)

#00586D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313ca9;
/* rgb */ color: rgb(49, 60, 169);
/* oklch */ color: oklch(42.0% 0.173 272.1);

Tailwind

colors: {
  custom: {
    50: '#7a72c4',
    500: '#313ca9',
    950: '#000000',
  },
}

SCSS

$custom: #313ca9;
$custom-light: #7a72c4;
$custom-dark: #000000;

JSON

{
  "hex": "#313ca9",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 169
  },
  "hsl": {
    "h": 234.5,
    "s": 55.046,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42031,
    "c": 0.17269,
    "h": 272.1
  },
  "luminance": 0.06749
}

Semantic roles & 50–950 ramp

primary

#313CA9

secondary

#C1BA74

accent

#D149DE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #313CA9

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

Preview Lab → · Contrast checker → · Palette generator →