#31316F#31316F

#31316F is a dark, moderate blue. Relative luminance 0.040; OKLCH L 35.0% C 0.105 H 279.5°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#31316F
RGB	rgb(49, 49, 111)
HSL	hsl(240, 39%, 31%)
HSV	hsv(240, 56%, 44%)
CMYK	cmyk(55.9%, 55.9%, 0%, 56.5%)
CIE-LAB	lab(23.66, 19.26, -36.12)
CIE-LCH	lch(23.66, 40.93, 298.07°)
OKLab	oklab(34.96% 0.0173 -0.1032)
OKLCH	oklch(34.96% 0.105 279.5)
XYZ	xyz(5.2333, 3.9970, 15.5316)
Luminance	0.0400 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31316F #6F6F31

analogous

#31506F #31316F #50316F

triadic

#31316F #6F3131 #316F31

tetradic

#31316F #6F3150 #6F6F31 #316F50

square

#31316F #6F3150 #6F6F31 #316F50

split-complementary

#31316F #6F5031 #506F31

monochromatic

#0C0C1A #1E1E45 #31316F #444499 #6161B9

Accessibility & contrast

On white

11.67

#31316F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#31316F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31316F

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31316F	#FFFFFF	#000000	##FFFFFF
##31316F	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E3B71

Deuteranopia (green-blind)

#05366E

Tritanopia (blue-blind)

#163F4B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #31316f;
/* rgb */ color: rgb(49, 49, 111);
/* oklch */ color: oklch(35.0% 0.105 279.5);

Tailwind

colors: {
  custom: {
    50: '#6f6999',
    500: '#31316f',
    950: '#000000',
  },
}

SCSS

$custom: #31316f;
$custom-light: #6f6999;
$custom-dark: #000000;

JSON

{
  "hex": "#31316f",
  "rgb": {
    "r": 49,
    "g": 49,
    "b": 111
  },
  "hsl": {
    "h": 240,
    "s": 38.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.34957,
    "c": 0.10465,
    "h": 279.5
  },
  "luminance": 0.03997
}

Semantic roles & 50–950 ramp

primary

#31316F

secondary

#A0A05C

accent

#CF59CF

background

#F6F6F9

surface

#ECEBF2

border

#C7C6CC

text

#08060E

muted

#7B7A7E

Preview Lab

Preview with #31316F

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

Preview Lab → · Contrast checker → · Palette generator →