#313AB8#313AB8

#313AB8 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.1% C 0.195 H 271.8°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#313AB8
RGB	rgb(49, 58, 184)
HSL	hsl(236, 58%, 46%)
HSV	hsv(236, 73%, 72%)
CMYK	cmyk(73.4%, 68.5%, 0%, 27.8%)
CIE-LAB	lab(32.12, 39.37, -67.23)
CIE-LCH	lch(32.12, 77.91, 300.35°)
OKLab	oklab(43.1% 0.0063 -0.1945)
OKLCH	oklch(43.1% 0.195 271.8)
XYZ	xyz(11.4285, 7.1386, 46.1137)
Luminance	0.0714 (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

#313AB8 #B8AF31

analogous

#317DB8 #313AB8 #6B31B8

triadic

#313AB8 #B8313A #3AB831

tetradic

#313AB8 #B8317D #B8AF31 #31B86B

square

#313AB8 #B8317D #B8AF31 #31B86B

split-complementary

#313AB8 #B86B31 #7DB831

monochromatic

#171C57 #242B88 #313AB8 #555DD2 #858BDE

Accessibility & contrast

On white

8.65

#313AB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#313AB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313AB8

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313AB8	#FFFFFF	#000000	##FFFFFF
##313AB8	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052BC

Deuteranopia (green-blind)

#0045B6

Tritanopia (blue-blind)

#005C74

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #313ab8;
/* rgb */ color: rgb(49, 58, 184);
/* oklch */ color: oklch(43.1% 0.195 271.8);

Tailwind

colors: {
  custom: {
    50: '#7d71ce',
    500: '#313ab8',
    950: '#000000',
  },
}

SCSS

$custom: #313ab8;
$custom-light: #7d71ce;
$custom-dark: #000000;

JSON

{
  "hex": "#313ab8",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 184
  },
  "hsl": {
    "h": 236,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.43099,
    "c": 0.19455,
    "h": 271.8
  },
  "luminance": 0.0714
}

Semantic roles & 50–950 ramp

primary

#313AB8

secondary

#C8C37D

accent

#D747E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #313AB8

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

Preview Lab → · Contrast checker → · Palette generator →