#313EA6#313EA6

#313EA6 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.166 H 271.7°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#313EA6
RGB	rgb(49, 62, 166)
HSL	hsl(233, 54%, 42%)
HSV	hsv(233, 70%, 65%)
CMYK	cmyk(70.5%, 62.7%, 0%, 34.9%)
CIE-LAB	lab(31.46, 30.43, -57.57)
CIE-LCH	lch(31.46, 65.12, 297.86°)
OKLab	oklab(42.13% 0.0049 -0.1661)
OKLCH	oklch(42.13% 0.166 271.7)
XYZ	xyz(9.8699, 6.8504, 36.8711)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313EA6 #A69931

analogous

#3179A6 #313EA6 #5E31A6

triadic

#313EA6 #A6313E #3EA631

tetradic

#313EA6 #A63179 #A69931 #31A65E

square

#313EA6 #A63179 #A69931 #31A65E

split-complementary

#313EA6 #A65E31 #79A631

monochromatic

#151B47 #232C77 #313EA6 #4A59CA #7A84D8

Accessibility & contrast

On white

8.86

#313EA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#313EA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313EA6

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313EA6	#FFFFFF	#000000	##FFFFFF
##313EA6	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A9

Deuteranopia (green-blind)

#0045A4

Tritanopia (blue-blind)

#00586C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #313ea6;
/* rgb */ color: rgb(49, 62, 166);
/* oklch */ color: oklch(42.1% 0.166 271.7);

Tailwind

colors: {
  custom: {
    50: '#7973c1',
    500: '#313ea6',
    950: '#000000',
  },
}

SCSS

$custom: #313ea6;
$custom-light: #7973c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313ea6",
  "rgb": {
    "r": 49,
    "g": 62,
    "b": 166
  },
  "hsl": {
    "h": 233.333,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.42125,
    "c": 0.16621,
    "h": 271.7
  },
  "luminance": 0.06851
}

Semantic roles & 50–950 ramp

primary

#313EA6

secondary

#C0B873

accent

#CD4ADE

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313EA6

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

Preview Lab → · Contrast checker → · Palette generator →