#313EB4#313EB4

#313EB4 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.185 H 271.3°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#313EB4
RGB	rgb(49, 62, 180)
HSL	hsl(234, 57%, 45%)
HSV	hsv(234, 73%, 71%)
CMYK	cmyk(72.8%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(32.68, 35.47, -63.93)
CIE-LCH	lch(32.68, 73.11, 299.02°)
OKLab	oklab(43.4% 0.0042 -0.1848)
OKLCH	oklch(43.4% 0.185 271.3)
XYZ	xyz(11.2247, 7.3924, 44.0065)
Luminance	0.0739 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EB4 #B4A731

analogous

#317FB4 #313EB4 #6631B4

triadic

#313EB4 #B4313E #3EB431

tetradic

#313EB4 #B4317F #B4A731 #31B466

square

#313EB4 #B4317F #B4A731 #31B466

split-complementary

#313EB4 #B46631 #7FB431

monochromatic

#171D54 #242D84 #313EB4 #525FD0 #828BDD

Accessibility & contrast

On white

8.47

#313EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#313EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EB4

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EB4	#FFFFFF	#000000	##FFFFFF
##313EB4	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #313eb4;
/* rgb */ color: rgb(49, 62, 180);
/* oklch */ color: oklch(43.4% 0.185 271.3);

Tailwind

colors: {
  custom: {
    50: '#7c73cb',
    500: '#313eb4',
    950: '#000000',
  },
}

SCSS

$custom: #313eb4;
$custom-light: #7c73cb;
$custom-dark: #000000;

JSON

{
  "hex": "#313eb4",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 234.046,
    "s": 57.205,
    "l": 44.902
  },
  "oklch": {
    "l": 0.43397,
    "c": 0.18485,
    "h": 271.3
  },
  "luminance": 0.07394
}

Semantic roles & 50–950 ramp

primary

#313EB4

secondary

#C6BF7B

accent

#D147E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313EB4

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

Preview Lab → · Contrast checker → · Palette generator →