#313EA7#313EA7

#313EA7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.2% C 0.168 H 271.7°. Best body text is #FFFFFF at 8.83:1 contrast (WCAG AA passes).

Color values

HEX	#313EA7
RGB	rgb(49, 62, 167)
HSL	hsl(233, 55%, 42%)
HSV	hsv(233, 71%, 65%)
CMYK	cmyk(70.7%, 62.9%, 0%, 34.5%)
CIE-LAB	lab(31.55, 30.79, -58.03)
CIE-LCH	lch(31.55, 65.69, 297.95°)
OKLab	oklab(42.21% 0.0049 -0.1675)
OKLCH	oklch(42.21% 0.168 271.7)
XYZ	xyz(9.9619, 6.8873, 37.3561)
Luminance	0.0689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EA7 #A79A31

analogous

#3179A7 #313EA7 #5F31A7

triadic

#313EA7 #A7313E #3EA731

tetradic

#313EA7 #A73179 #A79A31 #31A75F

square

#313EA7 #A73179 #A79A31 #31A75F

split-complementary

#313EA7 #A75F31 #79A731

monochromatic

#151B48 #232C78 #313EA7 #4B59CA #7A85D8

Accessibility & contrast

On white

8.83

#313EA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#313EA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EA7

8.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EA7	#FFFFFF	#000000	##FFFFFF
##313EA7	1.00	8.83	2.38	8.83
#FFFFFF	8.83	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AA

Deuteranopia (green-blind)

#0045A5

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313ea7;
/* rgb */ color: rgb(49, 62, 167);
/* oklch */ color: oklch(42.2% 0.168 271.7);

Tailwind

colors: {
  custom: {
    50: '#7973c2',
    500: '#313ea7',
    950: '#000000',
  },
}

SCSS

$custom: #313ea7;
$custom-light: #7973c2;
$custom-dark: #000000;

JSON

{
  "hex": "#313ea7",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 167
  },
  "hsl": {
    "h": 233.39,
    "s": 54.63,
    "l": 42.353
  },
  "oklch": {
    "l": 0.42214,
    "c": 0.16757,
    "h": 271.7
  },
  "luminance": 0.06888
}

Semantic roles & 50–950 ramp

primary

#313EA7

secondary

#C1B873

accent

#CE4ADE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313EA7

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

Preview Lab → · Contrast checker → · Palette generator →