#313DA5#313DA5

#313DA5 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.9% C 0.166 H 272.0°. Best body text is #FFFFFF at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#313DA5
RGB	rgb(49, 61, 165)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 65%)
CMYK	cmyk(70.3%, 63%, 0%, 35.3%)
CIE-LAB	lab(31.13, 30.72, -57.52)
CIE-LCH	lch(31.13, 65.20, 298.10°)
OKLab	oklab(41.85% 0.0057 -0.166)
OKLCH	oklch(41.85% 0.166 272)
XYZ	xyz(9.7246, 6.7061, 36.3719)
Luminance	0.0671 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DA5 #A59931

analogous

#3177A5 #313DA5 #5F31A5

triadic

#313DA5 #A5313D #3DA531

tetradic

#313DA5 #A53177 #A59931 #31A55F

square

#313DA5 #A53177 #A59931 #31A55F

split-complementary

#313DA5 #A55F31 #77A531

monochromatic

#151A47 #232C76 #313DA5 #4A57C9 #7983D7

Accessibility & contrast

On white

8.97

#313DA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#313DA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DA5

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DA5	#FFFFFF	#000000	##FFFFFF
##313DA5	1.00	8.97	2.34	8.97
#FFFFFF	8.97	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA8

Deuteranopia (green-blind)

#0044A3

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313da5;
/* rgb */ color: rgb(49, 61, 165);
/* oklch */ color: oklch(41.9% 0.166 272.0);

Tailwind

colors: {
  custom: {
    50: '#7972c1',
    500: '#313da5',
    950: '#000000',
  },
}

SCSS

$custom: #313da5;
$custom-light: #7972c1;
$custom-dark: #000000;

JSON

{
  "hex": "#313da5",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 165
  },
  "hsl": {
    "h": 233.793,
    "s": 54.206,
    "l": 41.961
  },
  "oklch": {
    "l": 0.41851,
    "c": 0.1661,
    "h": 272
  },
  "luminance": 0.06707
}

Semantic roles & 50–950 ramp

primary

#313DA5

secondary

#C0B872

accent

#CE4ADE

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313DA5

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

Preview Lab → · Contrast checker → · Palette generator →