#3864CF#3864CF

#3864CF is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.3% C 0.173 H 264.4°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#3864CF
RGB	rgb(56, 100, 207)
HSL	hsl(223, 61%, 52%)
HSV	hsv(223, 73%, 81%)
CMYK	cmyk(72.9%, 51.7%, 0%, 18.8%)
CIE-LAB	lab(44.88, 21.73, -59.81)
CIE-LCH	lch(44.88, 63.63, 289.97°)
OKLab	oklab(53.25% -0.0168 -0.172)
OKLCH	oklch(53.25% 0.173 264.4)
XYZ	xyz(17.4466, 14.4582, 60.8906)
Luminance	0.1446 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3864CF #CFA338

analogous

#38AFCF #3864CF #5838CF

triadic

#3864CF #CF3864 #64CF38

tetradic

#3864CF #CF38AF #CFA338 #38CF58

square

#3864CF #CF38AF #CFA338 #38CF58

split-complementary

#3864CF #CF5838 #AFCF38

monochromatic

#1B3471 #274BA3 #3864CF #698ADB #9BB1E7

Accessibility & contrast

On white

5.40

#3864CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#3864CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3864CF

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3864CF	#FFFFFF	#000000	##FFFFFF
##3864CF	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D71D3

Deuteranopia (green-blind)

#0064CD

Tritanopia (blue-blind)

#007E90

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3864cf;
/* rgb */ color: rgb(56, 100, 207);
/* oklch */ color: oklch(53.3% 0.173 264.4);

Tailwind

colors: {
  custom: {
    50: '#828fde',
    500: '#3864cf',
    950: '#000000',
  },
}

SCSS

$custom: #3864cf;
$custom-light: #828fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3864cf",
  "rgb": {
    "r": 56,
    "g": 100,
    "b": 207
  },
  "hsl": {
    "h": 222.517,
    "s": 61.134,
    "l": 51.569
  },
  "oklch": {
    "l": 0.53253,
    "c": 0.17287,
    "h": 264.4
  },
  "luminance": 0.1446
}

Semantic roles & 50–950 ramp

primary

#3864CF

secondary

#D3BF90

accent

#B544E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3864CF

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

Preview Lab → · Contrast checker → · Palette generator →