#3840BB#3840BB

#3840BB is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.8% C 0.190 H 273.0°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#3840BB
RGB	rgb(56, 64, 187)
HSL	hsl(236, 54%, 48%)
HSV	hsv(236, 70%, 73%)
CMYK	cmyk(70.1%, 65.8%, 0%, 26.7%)
CIE-LAB	lab(34.18, 37.51, -65.61)
CIE-LCH	lch(34.18, 75.57, 299.76°)
OKLab	oklab(44.79% 0.0099 -0.1895)
OKLCH	oklch(44.79% 0.19 273)
XYZ	xyz(12.4309, 8.0942, 47.9113)
Luminance	0.0809 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3840BB #BBB338

analogous

#3881BB #3840BB #7238BB

triadic

#3840BB #BB3840 #40BB38

tetradic

#3840BB #BB3881 #BBB338 #38BB72

square

#3840BB #BB3881 #BBB338 #38BB72

split-complementary

#3840BB #BB7238 #81BB38

monochromatic

#1C205D #2A308C #3840BB #6167D0 #9094DE

Accessibility & contrast

On white

8.02

#3840BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3840BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3840BB

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3840BB	#FFFFFF	#000000	##FFFFFF
##3840BB	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BF

Deuteranopia (green-blind)

#004AB9

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3840bb;
/* rgb */ color: rgb(56, 64, 187);
/* oklch */ color: oklch(44.8% 0.190 273.0);

Tailwind

colors: {
  custom: {
    50: '#8075d1',
    500: '#3840bb',
    950: '#000000',
  },
}

SCSS

$custom: #3840bb;
$custom-light: #8075d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3840bb",
  "rgb": {
    "r": 56,
    "g": 64,
    "b": 187
  },
  "hsl": {
    "h": 236.336,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.44786,
    "c": 0.18978,
    "h": 273
  },
  "luminance": 0.08095
}

Semantic roles & 50–950 ramp

primary

#3840BB

secondary

#C8C486

accent

#D44BDD

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0C0814

muted

#7D7B82

Preview Lab

Preview with #3840BB

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

Preview Lab → · Contrast checker → · Palette generator →