#313DA1#313DA1

#313DA1 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.5% C 0.161 H 272.1°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#313DA1
RGB	rgb(49, 61, 161)
HSL	hsl(234, 53%, 41%)
HSV	hsv(234, 70%, 63%)
CMYK	cmyk(69.6%, 62.1%, 0%, 36.9%)
CIE-LAB	lab(30.79, 29.27, -55.66)
CIE-LCH	lch(30.79, 62.88, 297.74°)
OKLab	oklab(41.5% 0.0059 -0.1605)
OKLCH	oklch(41.5% 0.161 272.1)
XYZ	xyz(9.3662, 6.5628, 34.4844)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313DA1 #A19531

analogous

#3175A1 #313DA1 #5D31A1

triadic

#313DA1 #A1313D #3DA131

tetradic

#313DA1 #A13175 #A19531 #31A15D

square

#313DA1 #A13175 #A19531 #31A15D

split-complementary

#313DA1 #A15D31 #75A131

monochromatic

#141943 #232B72 #313DA1 #4856C7 #7781D6

Accessibility & contrast

On white

9.08

#313DA1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#313DA1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313DA1

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313DA1	#FFFFFF	#000000	##FFFFFF
##313DA1	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EA4

Deuteranopia (green-blind)

#00439F

Tritanopia (blue-blind)

#005669

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #313da1;
/* rgb */ color: rgb(49, 61, 161);
/* oklch */ color: oklch(41.5% 0.161 272.1);

Tailwind

colors: {
  custom: {
    50: '#7872be',
    500: '#313da1',
    950: '#000000',
  },
}

SCSS

$custom: #313da1;
$custom-light: #7872be;
$custom-dark: #000000;

JSON

{
  "hex": "#313da1",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 161
  },
  "hsl": {
    "h": 233.571,
    "s": 53.333,
    "l": 41.176
  },
  "oklch": {
    "l": 0.41497,
    "c": 0.16065,
    "h": 272.1
  },
  "luminance": 0.06564
}

Semantic roles & 50–950 ramp

primary

#313DA1

secondary

#BEB570

accent

#CD4BDD

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #313DA1

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

Preview Lab → · Contrast checker → · Palette generator →