#3840A8#3840A8

#3840A8 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.165 H 273.8°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#3840A8
RGB	rgb(56, 64, 168)
HSL	hsl(236, 50%, 44%)
HSV	hsv(236, 67%, 66%)
CMYK	cmyk(66.7%, 61.9%, 0%, 34.1%)
CIE-LAB	lab(32.55, 30.85, -56.97)
CIE-LCH	lch(32.55, 64.79, 298.44°)
OKLab	oklab(43.09% 0.0111 -0.1642)
OKLCH	oklch(43.09% 0.165 273.8)
XYZ	xyz(10.5298, 7.3338, 37.8988)
Luminance	0.0733 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3840A8 #A8A038

analogous

#3878A8 #3840A8 #6838A8

triadic

#3840A8 #A83840 #40A838

tetradic

#3840A8 #A83878 #A8A038 #38A868

square

#3840A8 #A83878 #A8A038 #38A868

split-complementary

#3840A8 #A86838 #78A838

monochromatic

#191D4C #292F7A #3840A8 #565EC7 #848AD6

Accessibility & contrast

On white

8.51

#3840A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3840A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3840A8

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3840A8	#FFFFFF	#000000	##FFFFFF
##3840A8	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AB

Deuteranopia (green-blind)

#0048A6

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3840a8;
/* rgb */ color: rgb(56, 64, 168);
/* oklch */ color: oklch(43.1% 0.165 273.8);

Tailwind

colors: {
  custom: {
    50: '#7c75c3',
    500: '#3840a8',
    950: '#000000',
  },
}

SCSS

$custom: #3840a8;
$custom-light: #7c75c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3840a8",
  "rgb": {
    "r": 56,
    "g": 64,
    "b": 168
  },
  "hsl": {
    "h": 235.714,
    "s": 50,
    "l": 43.922
  },
  "oklch": {
    "l": 0.43094,
    "c": 0.16457,
    "h": 273.8
  },
  "luminance": 0.07335
}

Semantic roles & 50–950 ramp

primary

#3840A8

secondary

#C0BB7C

accent

#D04EDA

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3840A8

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

Preview Lab → · Contrast checker → · Palette generator →