#313CA6#313CA6

#313CA6 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.8% C 0.169 H 272.2°. Best body text is #FFFFFF at 9.02:1 contrast (WCAG AA passes).

Color values

HEX	#313CA6
RGB	rgb(49, 60, 166)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 65%)
CMYK	cmyk(70.5%, 63.9%, 0%, 34.9%)
CIE-LAB	lab(30.97, 31.73, -58.38)
CIE-LCH	lch(30.97, 66.45, 298.52°)
OKLab	oklab(41.76% 0.0064 -0.1685)
OKLCH	oklch(41.76% 0.169 272.2)
XYZ	xyz(9.7631, 6.6369, 36.8355)
Luminance	0.0664 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313CA6 #A69B31

analogous

#3177A6 #313CA6 #6131A6

triadic

#313CA6 #A6313C #3CA631

tetradic

#313CA6 #A63177 #A69B31 #31A661

square

#313CA6 #A63177 #A69B31 #31A661

split-complementary

#313CA6 #A66131 #77A631

monochromatic

#151A47 #232B77 #313CA6 #4A56CA #7A83D8

Accessibility & contrast

On white

9.02

#313CA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#313CA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313CA6

9.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313CA6	#FFFFFF	#000000	##FFFFFF
##313CA6	1.00	9.02	2.33	9.02
#FFFFFF	9.02	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA9

Deuteranopia (green-blind)

#0044A4

Tritanopia (blue-blind)

#00576B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313ca6;
/* rgb */ color: rgb(49, 60, 166);
/* oklch */ color: oklch(41.8% 0.169 272.2);

Tailwind

colors: {
  custom: {
    50: '#7971c1',
    500: '#313ca6',
    950: '#000000',
  },
}

SCSS

$custom: #313ca6;
$custom-light: #7971c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313ca6",
  "rgb": {
    "r": 49,
    "g": 60,
    "b": 166
  },
  "hsl": {
    "h": 234.359,
    "s": 54.419,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41758,
    "c": 0.16867,
    "h": 272.2
  },
  "luminance": 0.06638
}

Semantic roles & 50–950 ramp

primary

#313CA6

secondary

#C0B973

accent

#D04ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313CA6

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

Preview Lab → · Contrast checker → · Palette generator →