#3863CF#3863CF

#3863CF is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.0% C 0.174 H 264.7°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#3863CF
RGB	rgb(56, 99, 207)
HSL	hsl(223, 61%, 52%)
HSV	hsv(223, 73%, 81%)
CMYK	cmyk(72.9%, 52.2%, 0%, 18.8%)
CIE-LAB	lab(44.61, 22.37, -60.24)
CIE-LCH	lch(44.61, 64.26, 290.37°)
OKLab	oklab(53.05% -0.016 -0.1733)
OKLCH	oklch(53.05% 0.174 264.7)
XYZ	xyz(17.3512, 14.2676, 60.8589)
Luminance	0.1427 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3863CF #CFA438

analogous

#38AFCF #3863CF #5938CF

triadic

#3863CF #CF3863 #63CF38

tetradic

#3863CF #CF38AF #CFA438 #38CF59

square

#3863CF #CF38AF #CFA438 #38CF59

split-complementary

#3863CF #CF5938 #AFCF38

monochromatic

#1B3471 #274AA3 #3863CF #698ADB #9BB0E7

Accessibility & contrast

On white

5.45

#3863CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#3863CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3863CF

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3863CF	#FFFFFF	#000000	##FFFFFF
##3863CF	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1971D3

Deuteranopia (green-blind)

#0063CD

Tritanopia (blue-blind)

#007D8F

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3863cf;
/* rgb */ color: rgb(56, 99, 207);
/* oklch */ color: oklch(53.0% 0.174 264.7);

Tailwind

colors: {
  custom: {
    50: '#828ede',
    500: '#3863cf',
    950: '#000000',
  },
}

SCSS

$custom: #3863cf;
$custom-light: #828ede;
$custom-dark: #000000;

JSON

{
  "hex": "#3863cf",
  "rgb": {
    "r": 56,
    "g": 99,
    "b": 207
  },
  "hsl": {
    "h": 222.914,
    "s": 61.134,
    "l": 51.569
  },
  "oklch": {
    "l": 0.53049,
    "c": 0.17408,
    "h": 264.7
  },
  "luminance": 0.14269
}

Semantic roles & 50–950 ramp

primary

#3863CF

secondary

#D3C090

accent

#B644E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3863CF

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

Preview Lab → · Contrast checker → · Palette generator →