#3864B7#3864B7

#3864B7 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.6% C 0.140 H 261.8°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3864B7
RGB	rgb(56, 100, 183)
HSL	hsl(219, 53%, 47%)
HSV	hsv(219, 69%, 72%)
CMYK	cmyk(69.4%, 45.4%, 0%, 28.2%)
CIE-LAB	lab(43.32, 12.90, -48.44)
CIE-LCH	lch(43.32, 50.13, 284.91°)
OKLab	oklab(51.56% -0.0201 -0.1386)
OKLCH	oklch(51.56% 0.14 261.8)
XYZ	xyz(14.7323, 13.3725, 46.5953)
Luminance	0.1337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3864B7 #B78B38

analogous

#38A3B7 #3864B7 #4C38B7

triadic

#3864B7 #B73864 #64B738

tetradic

#3864B7 #B738A3 #B78B38 #38B74C

square

#3864B7 #B738A3 #B78B38 #38B74C

split-complementary

#3864B7 #B74C38 #A3B738

monochromatic

#1B3159 #2A4A88 #3864B7 #5E85CE #8DA9DC

Accessibility & contrast

On white

5.71

#3864B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3864B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3864B7

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3864B7	#FFFFFF	#000000	##FFFFFF
##3864B7	1.00	5.71	3.67	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6DBA

Deuteranopia (green-blind)

#2261B5

Tritanopia (blue-blind)

#007784

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3864b7;
/* rgb */ color: rgb(56, 100, 183);
/* oklch */ color: oklch(51.6% 0.140 261.8);

Tailwind

colors: {
  custom: {
    50: '#7d8fcd',
    500: '#3864b7',
    950: '#000000',
  },
}

SCSS

$custom: #3864b7;
$custom-light: #7d8fcd;
$custom-dark: #000000;

JSON

{
  "hex": "#3864b7",
  "rgb": {
    "r": 56,
    "g": 100,
    "b": 183
  },
  "hsl": {
    "h": 219.213,
    "s": 53.138,
    "l": 46.863
  },
  "oklch": {
    "l": 0.51557,
    "c": 0.14006,
    "h": 261.8
  },
  "luminance": 0.13374
}

Semantic roles & 50–950 ramp

primary

#3864B7

secondary

#C7B084

accent

#AA4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3864B7

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

Preview Lab → · Contrast checker → · Palette generator →