#3840AB#3840AB

#3840AB is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.169 H 273.7°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#3840AB
RGB	rgb(56, 64, 171)
HSL	hsl(236, 51%, 45%)
HSV	hsv(236, 67%, 67%)
CMYK	cmyk(67.3%, 62.6%, 0%, 32.9%)
CIE-LAB	lab(32.80, 31.91, -58.36)
CIE-LCH	lch(32.80, 66.52, 298.67°)
OKLab	oklab(43.35% 0.0109 -0.1683)
OKLCH	oklch(43.35% 0.169 273.7)
XYZ	xyz(10.8125, 7.4468, 39.3878)
Luminance	0.0745 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.86

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3840AB #ABA338

analogous

#387AAB #3840AB #6A38AB

triadic

#3840AB #AB3840 #40AB38

tetradic

#3840AB #AB387A #ABA338 #38AB6A

square

#3840AB #AB387A #ABA338 #38AB6A

split-complementary

#3840AB #AB6A38 #7AAB38

monochromatic

#1A1D4F #292F7D #3840AB #5860C8 #868CD7

Accessibility & contrast

On white

8.44

#3840AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#3840AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3840AB

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3840AB	#FFFFFF	#000000	##FFFFFF
##3840AB	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AE

Deuteranopia (green-blind)

#0048A9

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3840ab;
/* rgb */ color: rgb(56, 64, 171);
/* oklch */ color: oklch(43.4% 0.169 273.7);

Tailwind

colors: {
  custom: {
    50: '#7d75c5',
    500: '#3840ab',
    950: '#000000',
  },
}

SCSS

$custom: #3840ab;
$custom-light: #7d75c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3840ab",
  "rgb": {
    "r": 56,
    "g": 64,
    "b": 171
  },
  "hsl": {
    "h": 235.826,
    "s": 50.661,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43354,
    "c": 0.16863,
    "h": 273.7
  },
  "luminance": 0.07448
}

Semantic roles & 50–950 ramp

primary

#3840AB

secondary

#C1BD7D

accent

#D04EDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3840AB

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

Preview Lab → · Contrast checker → · Palette generator →