#3864BB#3864BB

#3864BB is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.8% C 0.146 H 262.3°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#3864BB
RGB	rgb(56, 100, 187)
HSL	hsl(220, 54%, 48%)
HSV	hsv(220, 70%, 73%)
CMYK	cmyk(70.1%, 46.5%, 0%, 26.7%)
CIE-LAB	lab(43.57, 14.37, -50.37)
CIE-LCH	lch(43.57, 52.38, 285.92°)
OKLab	oklab(51.83% -0.0194 -0.1443)
OKLCH	oklch(51.83% 0.146 262.3)
XYZ	xyz(15.1545, 13.5414, 48.8192)
Luminance	0.1354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3864BB #BB8F38

analogous

#38A6BB #3864BB #4D38BB

triadic

#3864BB #BB3864 #64BB38

tetradic

#3864BB #BB38A6 #BB8F38 #38BB4D

square

#3864BB #BB38A6 #BB8F38 #38BB4D

split-complementary

#3864BB #BB4D38 #A6BB38

monochromatic

#1C325D #2A4B8C #3864BB #6186D0 #90AADE

Accessibility & contrast

On white

5.66

#3864BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3864BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3864BB

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3864BB	#FFFFFF	#000000	##FFFFFF
##3864BB	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376DBE

Deuteranopia (green-blind)

#1B61B9

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3864bb;
/* rgb */ color: rgb(56, 100, 187);
/* oklch */ color: oklch(51.8% 0.146 262.3);

Tailwind

colors: {
  custom: {
    50: '#7e8fd0',
    500: '#3864bb',
    950: '#000000',
  },
}

SCSS

$custom: #3864bb;
$custom-light: #7e8fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3864bb",
  "rgb": {
    "r": 56,
    "g": 100,
    "b": 187
  },
  "hsl": {
    "h": 219.847,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.51829,
    "c": 0.14559,
    "h": 262.3
  },
  "luminance": 0.13543
}

Semantic roles & 50–950 ramp

primary

#3864BB

secondary

#C8B286

accent

#AC4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3864BB

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

Preview Lab → · Contrast checker → · Palette generator →