#31379A#31379A

#31379A is a dark, vivid blue. Relative luminance 0.057; OKLCH L 39.8% C 0.159 H 274.0°. Best body text is #FFFFFF at 9.80:1 contrast (WCAG AA passes).

Color values

HEX	#31379A
RGB	rgb(49, 55, 154)
HSL	hsl(237, 52%, 40%)
HSV	hsv(237, 68%, 60%)
CMYK	cmyk(68.2%, 64.3%, 0%, 39.6%)
CIE-LAB	lab(28.69, 30.65, -54.84)
CIE-LCH	lch(28.69, 62.82, 299.20°)
OKLab	oklab(39.77% 0.011 -0.1582)
OKLCH	oklch(39.77% 0.159 274)
XYZ	xyz(8.4636, 5.7177, 31.2232)
Luminance	0.0572 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31379A #9A9431

analogous

#316C9A #31379A #5F319A

triadic

#31379A #9A3137 #379A31

tetradic

#31379A #9A316C #9A9431 #319A5F

square

#31379A #9A316C #9A9431 #319A5F

split-complementary

#31379A #9A5F31 #6C9A31

monochromatic

#13163D #22266C #31379A #454CC4 #7378D2

Accessibility & contrast

On white

9.80

#31379A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#31379A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31379A

9.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31379A	#FFFFFF	#000000	##FFFFFF
##31379A	1.00	9.80	2.14	9.80
#FFFFFF	9.80	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489D

Deuteranopia (green-blind)

#003F98

Tritanopia (blue-blind)

#005063

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #31379a;
/* rgb */ color: rgb(49, 55, 154);
/* oklch */ color: oklch(39.8% 0.159 274.0);

Tailwind

colors: {
  custom: {
    50: '#776eb9',
    500: '#31379a',
    950: '#000000',
  },
}

SCSS

$custom: #31379a;
$custom-light: #776eb9;
$custom-dark: #000000;

JSON

{
  "hex": "#31379a",
  "rgb": {
    "r": 49,
    "g": 55,
    "b": 154
  },
  "hsl": {
    "h": 236.571,
    "s": 51.724,
    "l": 39.804
  },
  "oklch": {
    "l": 0.39765,
    "c": 0.15857,
    "h": 274
  },
  "luminance": 0.05718
}

Semantic roles & 50–950 ramp

primary

#31379A

secondary

#BAB66C

accent

#D34DDB

background

#F7F6FB

surface

#EEEBF6

border

#C9C6D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #31379A

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

Preview Lab → · Contrast checker → · Palette generator →