#3863CB#3863CB

#3863CB is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.8% C 0.169 H 264.4°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3863CB
RGB	rgb(56, 99, 203)
HSL	hsl(222, 59%, 51%)
HSV	hsv(222, 72%, 80%)
CMYK	cmyk(72.4%, 51.2%, 0%, 20.4%)
CIE-LAB	lab(44.34, 20.90, -58.39)
CIE-LCH	lch(44.34, 62.01, 289.70°)
OKLab	oklab(52.75% -0.0164 -0.1679)
OKLCH	oklch(52.75% 0.169 264.4)
XYZ	xyz(16.8684, 14.0744, 58.3160)
Luminance	0.1408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3863CB #CBA038

analogous

#38ACCB #3863CB #5638CB

triadic

#3863CB #CB3863 #63CB38

tetradic

#3863CB #CB38AC #CBA038 #38CB56

square

#3863CB #CB38AC #CBA038 #38CB56

split-complementary

#3863CB #CB5638 #ACCB38

monochromatic

#1C346C #294B9D #3863CB #6989D8 #99AFE4

Accessibility & contrast

On white

5.50

#3863CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3863CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3863CB

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3863CB	#FFFFFF	#000000	##FFFFFF
##3863CB	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2170CF

Deuteranopia (green-blind)

#0062C9

Tritanopia (blue-blind)

#007C8D

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3863cb;
/* rgb */ color: rgb(56, 99, 203);
/* oklch */ color: oklch(52.8% 0.169 264.4);

Tailwind

colors: {
  custom: {
    50: '#818edb',
    500: '#3863cb',
    950: '#000000',
  },
}

SCSS

$custom: #3863cb;
$custom-light: #818edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3863cb",
  "rgb": {
    "r": 56,
    "g": 99,
    "b": 203
  },
  "hsl": {
    "h": 222.449,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.52753,
    "c": 0.16869,
    "h": 264.4
  },
  "luminance": 0.14076
}

Semantic roles & 50–950 ramp

primary

#3863CB

secondary

#D0BD8F

accent

#B446E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3863CB

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

Preview Lab → · Contrast checker → · Palette generator →