#31379C#31379C

#31379C is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.9% C 0.161 H 273.8°. Best body text is #FFFFFF at 9.73:1 contrast (WCAG AA passes).

Color values

HEX	#31379C
RGB	rgb(49, 55, 156)
HSL	hsl(237, 52%, 40%)
HSV	hsv(237, 69%, 61%)
CMYK	cmyk(68.6%, 64.7%, 0%, 38.8%)
CIE-LAB	lab(28.86, 31.37, -55.77)
CIE-LCH	lch(28.86, 63.99, 299.36°)
OKLab	oklab(39.95% 0.0108 -0.1609)
OKLCH	oklch(39.95% 0.161 273.8)
XYZ	xyz(8.6316, 5.7849, 32.1078)
Luminance	0.0579 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31379C #9C9631

analogous

#316C9C #31379C #61319C

triadic

#31379C #9C3137 #379C31

tetradic

#31379C #9C316C #9C9631 #319C61

square

#31379C #9C316C #9C9631 #319C61

split-complementary

#31379C #9C6131 #6C9C31

monochromatic

#14163F #22276D #31379C #454DC5 #7479D3

Accessibility & contrast

On white

9.73

#31379C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#31379C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31379C

9.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31379C	#FFFFFF	#000000	##FFFFFF
##31379C	1.00	9.73	2.16	9.73
#FFFFFF	9.73	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499F

Deuteranopia (green-blind)

#003F9A

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #31379c;
/* rgb */ color: rgb(49, 55, 156);
/* oklch */ color: oklch(39.9% 0.161 273.8);

Tailwind

colors: {
  custom: {
    50: '#776eba',
    500: '#31379c',
    950: '#000000',
  },
}

SCSS

$custom: #31379c;
$custom-light: #776eba;
$custom-dark: #000000;

JSON

{
  "hex": "#31379c",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 156
  },
  "hsl": {
    "h": 236.636,
    "s": 52.195,
    "l": 40.196
  },
  "oklch": {
    "l": 0.39947,
    "c": 0.16129,
    "h": 273.8
  },
  "luminance": 0.05786
}

Semantic roles & 50–950 ramp

primary

#31379C

secondary

#BBB76D

accent

#D44CDC

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #31379C

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

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