#31379E#31379E

#31379E is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.1% C 0.164 H 273.7°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#31379E
RGB	rgb(49, 55, 158)
HSL	hsl(237, 53%, 41%)
HSV	hsv(237, 69%, 62%)
CMYK	cmyk(69%, 65.2%, 0%, 38%)
CIE-LAB	lab(29.04, 32.08, -56.70)
CIE-LCH	lch(29.04, 65.15, 299.50°)
OKLab	oklab(40.13% 0.0107 -0.1636)
OKLCH	oklch(40.13% 0.164 273.7)
XYZ	xyz(8.8023, 5.8532, 33.0070)
Luminance	0.0585 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31379E #9E9831

analogous

#316D9E #31379E #61319E

triadic

#31379E #9E3137 #379E31

tetradic

#31379E #9E316D #9E9831 #319E61

square

#31379E #9E316D #9E9831 #319E61

split-complementary

#31379E #9E6131 #6D9E31

monochromatic

#141641 #23276F #31379E #464DC6 #757AD4

Accessibility & contrast

On white

9.67

#31379E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#31379E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31379E

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31379E	#FFFFFF	#000000	##FFFFFF
##31379E	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A1

Deuteranopia (green-blind)

#00409C

Tritanopia (blue-blind)

#005265

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #31379e;
/* rgb */ color: rgb(49, 55, 158);
/* oklch */ color: oklch(40.1% 0.164 273.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#31379e",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 158
  },
  "hsl": {
    "h": 236.697,
    "s": 52.657,
    "l": 40.588
  },
  "oklch": {
    "l": 0.4013,
    "c": 0.164,
    "h": 273.7
  },
  "luminance": 0.05854
}

Semantic roles & 50–950 ramp

primary

#31379E

secondary

#BCB86E

accent

#D44CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31379E

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

Preview Lab → · Contrast checker → · Palette generator →