#313A6F#313A6F

#313A6F is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.9% C 0.091 H 273.8°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#313A6F
RGB	rgb(49, 58, 111)
HSL	hsl(231, 39%, 31%)
HSV	hsv(231, 56%, 44%)
CMYK	cmyk(55.9%, 47.7%, 0%, 56.5%)
CIE-LAB	lab(26.23, 13.07, -31.99)
CIE-LCH	lch(26.23, 34.56, 292.22°)
OKLab	oklab(36.9% 0.0061 -0.091)
OKLCH	oklch(36.9% 0.091 273.8)
XYZ	xyz(5.6480, 4.8264, 15.6698)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#313A6F #6F6631

analogous

#31596F #313A6F #47316F

triadic

#313A6F #6F313A #3A6F31

tetradic

#313A6F #6F3159 #6F6631 #316F47

square

#313A6F #6F3159 #6F6631 #316F47

split-complementary

#313A6F #6F4731 #596F31

monochromatic

#0C0E1A #1E2445 #313A6F #445099 #616EB9

Accessibility & contrast

On white

10.68

#313A6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#313A6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #313A6F

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##313A6F	#FFFFFF	#000000	##FFFFFF
##313A6F	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234171

Deuteranopia (green-blind)

#1C3C6E

Tritanopia (blue-blind)

#14464F

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #313a6f;
/* rgb */ color: rgb(49, 58, 111);
/* oklch */ color: oklch(36.9% 0.091 273.8);

Tailwind

colors: {
  custom: {
    50: '#6e6f99',
    500: '#313a6f',
    950: '#000000',
  },
}

SCSS

$custom: #313a6f;
$custom-light: #6e6f99;
$custom-dark: #000000;

JSON

{
  "hex": "#313a6f",
  "rgb": {
    "r": 49,
    "g": 58,
    "b": 111
  },
  "hsl": {
    "h": 231.29,
    "s": 38.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.369,
    "c": 0.0912,
    "h": 273.8
  },
  "luminance": 0.04827
}

Semantic roles & 50–950 ramp

primary

#313A6F

secondary

#A0965C

accent

#BE59CF

background

#F6F6F9

surface

#ECECF2

border

#C7C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #313A6F

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

Preview Lab → · Contrast checker → · Palette generator →