#31379F#31379F

#31379F is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.2% C 0.165 H 273.7°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#31379F
RGB	rgb(49, 55, 159)
HSL	hsl(237, 53%, 41%)
HSV	hsv(237, 69%, 62%)
CMYK	cmyk(69.2%, 65.4%, 0%, 37.6%)
CIE-LAB	lab(29.13, 32.44, -57.16)
CIE-LCH	lch(29.13, 65.72, 299.57°)
OKLab	oklab(40.22% 0.0106 -0.165)
OKLCH	oklch(40.22% 0.165 273.7)
XYZ	xyz(8.8887, 5.8877, 33.4622)
Luminance	0.0589 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31379F #9F9931

analogous

#316E9F #31379F #62319F

triadic

#31379F #9F3137 #379F31

tetradic

#31379F #9F316E #9F9931 #319F62

square

#31379F #9F316E #9F9931 #319F62

split-complementary

#31379F #9F6231 #6E9F31

monochromatic

#141741 #232770 #31379F #474EC6 #767BD5

Accessibility & contrast

On white

9.64

#31379F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#31379F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31379F

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31379F	#FFFFFF	#000000	##FFFFFF
##31379F	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA2

Deuteranopia (green-blind)

#00409D

Tritanopia (blue-blind)

#005266

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #31379f;
/* rgb */ color: rgb(49, 55, 159);
/* oklch */ color: oklch(40.2% 0.165 273.7);

Tailwind

colors: {
  custom: {
    50: '#786ebc',
    500: '#31379f',
    950: '#000000',
  },
}

SCSS

$custom: #31379f;
$custom-light: #786ebc;
$custom-dark: #000000;

JSON

{
  "hex": "#31379f",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 159
  },
  "hsl": {
    "h": 236.727,
    "s": 52.885,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40222,
    "c": 0.16534,
    "h": 273.7
  },
  "luminance": 0.05889
}

Semantic roles & 50–950 ramp

primary

#31379F

secondary

#BDB96F

accent

#D44CDC

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31379F

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

Preview Lab → · Contrast checker → · Palette generator →