#3840B2#3840B2

#3840B2 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.178 H 273.4°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#3840B2
RGB	rgb(56, 64, 178)
HSL	hsl(236, 52%, 46%)
HSV	hsv(236, 69%, 70%)
CMYK	cmyk(68.5%, 64%, 0%, 30.2%)
CIE-LAB	lab(33.39, 34.37, -61.57)
CIE-LCH	lch(33.39, 70.51, 299.18°)
OKLab	oklab(43.97% 0.0106 -0.1777)
OKLCH	oklch(43.97% 0.178 273.4)
XYZ	xyz(11.4975, 7.7208, 42.9952)
Luminance	0.0772 (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

#3840B2 #B2AA38

analogous

#387DB2 #3840B2 #6D38B2

triadic

#3840B2 #B23840 #40B238

tetradic

#3840B2 #B2387D #B2AA38 #38B26D

square

#3840B2 #B2387D #B2AA38 #38B26D

split-complementary

#3840B2 #B26D38 #7DB238

monochromatic

#1B1F55 #292F83 #3840B2 #5C63CC #8A8FDA

Accessibility & contrast

On white

8.25

#3840B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#3840B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3840B2

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3840B2	#FFFFFF	#000000	##FFFFFF
##3840B2	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B6

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3840b2;
/* rgb */ color: rgb(56, 64, 178);
/* oklch */ color: oklch(44.0% 0.178 273.4);

Tailwind

colors: {
  custom: {
    50: '#7e75ca',
    500: '#3840b2',
    950: '#000000',
  },
}

SCSS

$custom: #3840b2;
$custom-light: #7e75ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3840b2",
  "rgb": {
    "r": 56,
    "g": 64,
    "b": 178
  },
  "hsl": {
    "h": 236.066,
    "s": 52.137,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43971,
    "c": 0.17799,
    "h": 273.4
  },
  "luminance": 0.07722
}

Semantic roles & 50–950 ramp

primary

#3840B2

secondary

#C5C081

accent

#D24CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3840B2

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

Preview Lab → · Contrast checker → · Palette generator →