#313EB0#313EB0

#313EB0 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.180 H 271.4°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#313EB0
RGB	rgb(49, 62, 176)
HSL	hsl(234, 56%, 44%)
HSV	hsv(234, 72%, 69%)
CMYK	cmyk(72.2%, 64.8%, 0%, 31%)
CIE-LAB	lab(32.33, 34.04, -62.14)
CIE-LCH	lch(32.33, 70.85, 298.71°)
OKLab	oklab(43.03% 0.0044 -0.1795)
OKLCH	oklch(43.03% 0.18 271.4)
XYZ	xyz(10.8231, 7.2317, 41.8913)
Luminance	0.0723 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EB0 #B0A331

analogous

#317EB0 #313EB0 #6431B0

triadic

#313EB0 #B0313E #3EB031

tetradic

#313EB0 #B0317E #B0A331 #31B064

square

#313EB0 #B0317E #B0A331 #31B064

split-complementary

#313EB0 #B06431 #7EB031

monochromatic

#161C50 #242D80 #313EB0 #505DCE #8089DC

Accessibility & contrast

On white

8.58

#313EB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#313EB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EB0

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EB0	#FFFFFF	#000000	##FFFFFF
##313EB0	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #313eb0;
/* rgb */ color: rgb(49, 62, 176);
/* oklch */ color: oklch(43.0% 0.180 271.4);

Tailwind

colors: {
  custom: {
    50: '#7b73c9',
    500: '#313eb0',
    950: '#000000',
  },
}

SCSS

$custom: #313eb0;
$custom-light: #7b73c9;
$custom-dark: #000000;

JSON

{
  "hex": "#313eb0",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 176
  },
  "hsl": {
    "h": 233.858,
    "s": 56.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.43028,
    "c": 0.17959,
    "h": 271.4
  },
  "luminance": 0.07233
}

Semantic roles & 50–950 ramp

primary

#313EB0

secondary

#C5BD78

accent

#D048E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313EB0

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

Preview Lab → · Contrast checker → · Palette generator →