#313DB2#313DB2

#313DB2 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.0% C 0.183 H 271.6°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#313DB2
RGB	rgb(49, 61, 178)
HSL	hsl(234, 57%, 45%)
HSV	hsv(234, 72%, 70%)
CMYK	cmyk(72.5%, 65.7%, 0%, 30.2%)
CIE-LAB	lab(32.27, 35.39, -63.43)
CIE-LCH	lch(32.27, 72.63, 299.16°)
OKLab	oklab(43.04% 0.005 -0.1833)
OKLCH	oklch(43.04% 0.183 271.6)
XYZ	xyz(10.9685, 7.2037, 42.9232)
Luminance	0.0721 (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

#313DB2 #B2A631

analogous

#317DB2 #313DB2 #6631B2

triadic

#313DB2 #B2313D #3DB231

tetradic

#313DB2 #B2317D #B2A631 #31B266

square

#313DB2 #B2317D #B2A631 #31B266

split-complementary

#313DB2 #B26631 #7DB231

monochromatic

#171C52 #242D82 #313DB2 #515DCF #818ADC

Accessibility & contrast

On white

8.60

#313DB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#313DB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DB2

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DB2	#FFFFFF	#000000	##FFFFFF
##313DB2	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B6

Deuteranopia (green-blind)

#0046B0

Tritanopia (blue-blind)

#005C72

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #313db2;
/* rgb */ color: rgb(49, 61, 178);
/* oklch */ color: oklch(43.0% 0.183 271.6);

Tailwind

colors: {
  custom: {
    50: '#7c72ca',
    500: '#313db2',
    950: '#000000',
  },
}

SCSS

$custom: #313db2;
$custom-light: #7c72ca;
$custom-dark: #000000;

JSON

{
  "hex": "#313db2",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 178
  },
  "hsl": {
    "h": 234.419,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43037,
    "c": 0.1834,
    "h": 271.6
  },
  "luminance": 0.07205
}

Semantic roles & 50–950 ramp

primary

#313DB2

secondary

#C5BE79

accent

#D248E0

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #313DB2

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

Preview Lab → · Contrast checker → · Palette generator →