#381FBC#381FBC

#381FBC is a dark, highly saturated blue. Relative luminance 0.055; OKLCH L 40.4% C 0.222 H 276.9°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#381FBC
RGB	rgb(56, 31, 188)
HSL	hsl(250, 72%, 43%)
HSV	hsv(250, 84%, 74%)
CMYK	cmyk(70.2%, 83.5%, 0%, 26.3%)
CIE-LAB	lab(27.98, 55.52, -76.42)
CIE-LCH	lch(27.98, 94.45, 306.00°)
OKLab	oklab(40.42% 0.0269 -0.2208)
OKLCH	oklch(40.42% 0.222 276.9)
XYZ	xyz(11.1950, 5.4505, 48.0293)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#381FBC #A3BC1F

analogous

#1F55BC #381FBC #861FBC

triadic

#381FBC #BC381F #1FBC38

tetradic

#381FBC #BC1F55 #A3BC1F #1FBC86

square

#381FBC #BC1F55 #A3BC1F #1FBC86

split-complementary

#381FBC #BC861F #55BC1F

monochromatic

#190E53 #281687 #381FBC #543ADE #826EE7

Accessibility & contrast

On white

10.05

#381FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#381FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #381FBC

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##381FBC	#FFFFFF	#000000	##FFFFFF
##381FBC	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048C0

Deuteranopia (green-blind)

#003BB9

Tritanopia (blue-blind)

#005270

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #381fbc;
/* rgb */ color: rgb(56, 31, 188);
/* oklch */ color: oklch(40.4% 0.222 276.9);

Tailwind

colors: {
  custom: {
    50: '#8361d2',
    500: '#381fbc',
    950: '#000000',
  },
}

SCSS

$custom: #381fbc;
$custom-light: #8361d2;
$custom-dark: #000000;

JSON

{
  "hex": "#381fbc",
  "rgb": {
    "r": 56,
    "g": 31,
    "b": 188
  },
  "hsl": {
    "h": 249.554,
    "s": 71.689,
    "l": 42.941
  },
  "oklch": {
    "l": 0.40421,
    "c": 0.22241,
    "h": 276.9
  },
  "luminance": 0.05452
}

Semantic roles & 50–950 ramp

primary

#381FBC

secondary

#BDCD69

accent

#EE39D2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0D0514

muted

#7D7A83

Preview Lab

Preview with #381FBC

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

Preview Lab → · Contrast checker → · Palette generator →