#3864BF#3864BF

#3864BF is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.1% C 0.151 H 262.9°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#3864BF
RGB	rgb(56, 100, 191)
HSL	hsl(220, 55%, 48%)
HSV	hsv(220, 71%, 75%)
CMYK	cmyk(70.7%, 47.6%, 0%, 25.1%)
CIE-LAB	lab(43.82, 15.84, -52.29)
CIE-LCH	lch(43.82, 54.64, 286.85°)
OKLab	oklab(52.1% -0.0188 -0.1499)
OKLCH	oklch(52.1% 0.151 262.9)
XYZ	xyz(15.5887, 13.7151, 51.1058)
Luminance	0.1372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3864BF #BF9338

analogous

#38A7BF #3864BF #4F38BF

triadic

#3864BF #BF3864 #64BF38

tetradic

#3864BF #BF38A7 #BF9338 #38BF4F

square

#3864BF #BF38A7 #BF9338 #38BF4F

split-complementary

#3864BF #BF4F38 #A7BF38

monochromatic

#1C3260 #2A4B90 #3864BF #6387D1 #92ABDF

Accessibility & contrast

On white

5.61

#3864BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#3864BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3864BF

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3864BF	#FFFFFF	#000000	##FFFFFF
##3864BF	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#336EC2

Deuteranopia (green-blind)

#1162BD

Tritanopia (blue-blind)

#007988

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3864bf;
/* rgb */ color: rgb(56, 100, 191);
/* oklch */ color: oklch(52.1% 0.151 262.9);

Tailwind

colors: {
  custom: {
    50: '#7f8fd3',
    500: '#3864bf',
    950: '#000000',
  },
}

SCSS

$custom: #3864bf;
$custom-light: #7f8fd3;
$custom-dark: #000000;

JSON

{
  "hex": "#3864bf",
  "rgb": {
    "r": 56,
    "g": 100,
    "b": 191
  },
  "hsl": {
    "h": 220.444,
    "s": 54.656,
    "l": 48.431
  },
  "oklch": {
    "l": 0.52104,
    "c": 0.1511,
    "h": 262.9
  },
  "luminance": 0.13717
}

Semantic roles & 50–950 ramp

primary

#3864BF

secondary

#CAB589

accent

#AE4ADE

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3864BF

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

Preview Lab → · Contrast checker → · Palette generator →