#31379D#31379D

#31379D is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.0% C 0.163 H 273.8°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#31379D
RGB	rgb(49, 55, 157)
HSL	hsl(237, 52%, 40%)
HSV	hsv(237, 69%, 62%)
CMYK	cmyk(68.8%, 65%, 0%, 38.4%)
CIE-LAB	lab(28.95, 31.73, -56.24)
CIE-LCH	lch(28.95, 64.57, 299.43°)
OKLab	oklab(40.04% 0.0107 -0.1623)
OKLCH	oklch(40.04% 0.163 273.8)
XYZ	xyz(8.7166, 5.8189, 32.5555)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31379D #9D9731

analogous

#316D9D #31379D #61319D

triadic

#31379D #9D3137 #379D31

tetradic

#31379D #9D316D #9D9731 #319D61

square

#31379D #9D316D #9D9731 #319D61

split-complementary

#31379D #9D6131 #6D9D31

monochromatic

#141640 #22276E #31379D #464DC5 #757AD4

Accessibility & contrast

On white

9.70

#31379D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#31379D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31379D

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31379D	#FFFFFF	#000000	##FFFFFF
##31379D	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A0

Deuteranopia (green-blind)

#003F9B

Tritanopia (blue-blind)

#005165

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #31379d;
/* rgb */ color: rgb(49, 55, 157);
/* oklch */ color: oklch(40.0% 0.163 273.8);

Tailwind

colors: {
  custom: {
    50: '#786ebb',
    500: '#31379d',
    950: '#000000',
  },
}

SCSS

$custom: #31379d;
$custom-light: #786ebb;
$custom-dark: #000000;

JSON

{
  "hex": "#31379d",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 157
  },
  "hsl": {
    "h": 236.667,
    "s": 52.427,
    "l": 40.392
  },
  "oklch": {
    "l": 0.40038,
    "c": 0.16265,
    "h": 273.8
  },
  "luminance": 0.0582
}

Semantic roles & 50–950 ramp

primary

#31379D

secondary

#BCB86E

accent

#D44CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31379D

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

Preview Lab → · Contrast checker → · Palette generator →