#313D73#313D73

#313D73 is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.9% C 0.093 H 271.9°. Best body text is #FFFFFF at 10.27:1 contrast (WCAG AA passes).

Color values

HEX	#313D73
RGB	rgb(49, 61, 115)
HSL	hsl(229, 40%, 32%)
HSV	hsv(229, 57%, 45%)
CMYK	cmyk(57.4%, 47%, 0%, 54.9%)
CIE-LAB	lab(27.37, 12.45, -32.72)
CIE-LCH	lch(27.37, 35.00, 290.83°)
OKLab	oklab(37.85% 0.003 -0.0931)
OKLCH	oklch(37.85% 0.093 271.9)
XYZ	xyz(6.0289, 5.2278, 16.9077)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313D73 #736731

analogous

#315E73 #313D73 #463173

triadic

#313D73 #73313D #3D7331

tetradic

#313D73 #73315E #736731 #317346

square

#313D73 #73315E #736731 #317346

split-complementary

#313D73 #734631 #5E7331

monochromatic

#0C0F1D #1F2648 #313D73 #43549E #6273BC

Accessibility & contrast

On white

10.27

#313D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#313D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313D73

10.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313D73	#FFFFFF	#000000	##FFFFFF
##313D73	1.00	10.27	2.05	10.27
#FFFFFF	10.27	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254475

Deuteranopia (green-blind)

#1D3E72

Tritanopia (blue-blind)

#0E4952

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #313d73;
/* rgb */ color: rgb(49, 61, 115);
/* oklch */ color: oklch(37.9% 0.093 271.9);

Tailwind

colors: {
  custom: {
    50: '#6f729b',
    500: '#313d73',
    950: '#000000',
  },
}

SCSS

$custom: #313d73;
$custom-light: #6f729b;
$custom-dark: #000000;

JSON

{
  "hex": "#313d73",
  "rgb": {
    "r": 49,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 229.091,
    "s": 40.244,
    "l": 32.157
  },
  "oklch": {
    "l": 0.37851,
    "c": 0.09315,
    "h": 271.9
  },
  "luminance": 0.05228
}

Semantic roles & 50–950 ramp

primary

#313D73

secondary

#A4975C

accent

#BA58D0

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#08070E

muted

#7B7A7E

Preview Lab

Preview with #313D73

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

Preview Lab → · Contrast checker → · Palette generator →