#313DA4#313DA4

#313DA4 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.165 H 272.0°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#313DA4
RGB	rgb(49, 61, 164)
HSL	hsl(234, 54%, 42%)
HSV	hsv(234, 70%, 64%)
CMYK	cmyk(70.1%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(31.04, 30.35, -57.05)
CIE-LCH	lch(31.04, 64.62, 298.01°)
OKLab	oklab(41.76% 0.0058 -0.1646)
OKLCH	oklch(41.76% 0.165 272)
XYZ	xyz(9.6339, 6.6699, 35.8945)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DA4 #A49831

analogous

#3177A4 #313DA4 #5F31A4

triadic

#313DA4 #A4313D #3DA431

tetradic

#313DA4 #A43177 #A49831 #31A45F

square

#313DA4 #A43177 #A49831 #31A45F

split-complementary

#313DA4 #A45F31 #77A431

monochromatic

#151A46 #232B75 #313DA4 #4957C9 #7982D7

Accessibility & contrast

On white

9.00

#313DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#313DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DA4

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DA4	#FFFFFF	#000000	##FFFFFF
##313DA4	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA7

Deuteranopia (green-blind)

#0044A2

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #313da4;
/* rgb */ color: rgb(49, 61, 164);
/* oklch */ color: oklch(41.8% 0.165 272.0);

Tailwind

colors: {
  custom: {
    50: '#7972c0',
    500: '#313da4',
    950: '#000000',
  },
}

SCSS

$custom: #313da4;
$custom-light: #7972c0;
$custom-dark: #000000;

JSON

{
  "hex": "#313da4",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 233.739,
    "s": 53.991,
    "l": 41.765
  },
  "oklch": {
    "l": 0.41762,
    "c": 0.16474,
    "h": 272
  },
  "luminance": 0.06671
}

Semantic roles & 50–950 ramp

primary

#313DA4

secondary

#BFB772

accent

#CE4ADD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313DA4

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

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