#3864C9#3864C9

#3864C9 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.8% C 0.165 H 263.9°. Best body text is #FFFFFF at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#3864C9
RGB	rgb(56, 100, 201)
HSL	hsl(222, 57%, 50%)
HSV	hsv(222, 72%, 79%)
CMYK	cmyk(72.1%, 50.2%, 0%, 21.2%)
CIE-LAB	lab(44.48, 19.52, -57.01)
CIE-LCH	lch(44.48, 60.26, 288.90°)
OKLab	oklab(52.81% -0.0174 -0.1638)
OKLCH	oklch(52.81% 0.165 263.9)
XYZ	xyz(16.7269, 14.1704, 57.1006)
Luminance	0.1417 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3864C9 #C99D38

analogous

#38ACC9 #3864C9 #5438C9

triadic

#3864C9 #C93864 #64C938

tetradic

#3864C9 #C938AC #C99D38 #38C954

square

#3864C9 #C938AC #C99D38 #38C954

split-complementary

#3864C9 #C95438 #ACC938

monochromatic

#1D346A #2A4C9A #3864C9 #6889D6 #98AFE3

Accessibility & contrast

On white

5.48

#3864C9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.83

#3864C9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3864C9

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3864C9	#FFFFFF	#000000	##FFFFFF
##3864C9	1.00	5.48	3.83	5.48
#FFFFFF	5.48	1.00	21.00	1.00
#000000	3.83	21.00	1.00	21.00
##FFFFFF	5.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2770CD

Deuteranopia (green-blind)

#0063C7

Tritanopia (blue-blind)

#007C8D

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3864c9;
/* rgb */ color: rgb(56, 100, 201);
/* oklch */ color: oklch(52.8% 0.165 263.9);

Tailwind

colors: {
  custom: {
    50: '#818fda',
    500: '#3864c9',
    950: '#000000',
  },
}

SCSS

$custom: #3864c9;
$custom-light: #818fda;
$custom-dark: #000000;

JSON

{
  "hex": "#3864c9",
  "rgb": {
    "r": 56,
    "g": 100,
    "b": 201
  },
  "hsl": {
    "h": 221.793,
    "s": 57.312,
    "l": 50.392
  },
  "oklch": {
    "l": 0.52814,
    "c": 0.16476,
    "h": 263.9
  },
  "luminance": 0.14172
}

Semantic roles & 50–950 ramp

primary

#3864C9

secondary

#CFBB8E

accent

#B247E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3864C9

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

Preview Lab → · Contrast checker → · Palette generator →