#313CB8#313CB8

#313CB8 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.4% C 0.192 H 271.5°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#313CB8
RGB	rgb(49, 60, 184)
HSL	hsl(235, 58%, 46%)
HSV	hsv(235, 73%, 72%)
CMYK	cmyk(73.4%, 67.4%, 0%, 27.8%)
CIE-LAB	lab(32.58, 38.14, -66.48)
CIE-LCH	lch(32.58, 76.64, 299.84°)
OKLab	oklab(43.43% 0.0051 -0.1922)
OKLCH	oklch(43.43% 0.192 271.5)
XYZ	xyz(11.5313, 7.3442, 46.1480)
Luminance	0.0735 (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

#313CB8 #B8AD31

analogous

#317FB8 #313CB8 #6931B8

triadic

#313CB8 #B8313C #3CB831

tetradic

#313CB8 #B8317F #B8AD31 #31B869

square

#313CB8 #B8317F #B8AD31 #31B869

split-complementary

#313CB8 #B86931 #7FB831

monochromatic

#171C57 #242C88 #313CB8 #555FD2 #858CDE

Accessibility & contrast

On white

8.51

#313CB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#313CB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CB8

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CB8	#FFFFFF	#000000	##FFFFFF
##313CB8	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BC

Deuteranopia (green-blind)

#0046B6

Tritanopia (blue-blind)

#005D75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #313cb8;
/* rgb */ color: rgb(49, 60, 184);
/* oklch */ color: oklch(43.4% 0.192 271.5);

Tailwind

colors: {
  custom: {
    50: '#7d72ce',
    500: '#313cb8',
    950: '#000000',
  },
}

SCSS

$custom: #313cb8;
$custom-light: #7d72ce;
$custom-dark: #000000;

JSON

{
  "hex": "#313cb8",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 184
  },
  "hsl": {
    "h": 235.111,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43431,
    "c": 0.19232,
    "h": 271.5
  },
  "luminance": 0.07345
}

Semantic roles & 50–950 ramp

primary

#313CB8

secondary

#C8C27D

accent

#D547E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #313CB8

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

Preview Lab → · Contrast checker → · Palette generator →