#3964CF#3964CF

#3964CF is a mid, vivid blue. Relative luminance 0.145; OKLCH L 53.3% C 0.173 H 264.7°. Best body text is #FFFFFF at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#3964CF
RGB	rgb(57, 100, 207)
HSL	hsl(223, 61%, 52%)
HSV	hsv(223, 72%, 81%)
CMYK	cmyk(72.5%, 51.7%, 0%, 18.8%)
CIE-LAB	lab(44.92, 21.86, -59.74)
CIE-LCH	lch(44.92, 63.61, 290.10°)
OKLab	oklab(53.3% -0.016 -0.1718)
OKLCH	oklch(53.3% 0.173 264.7)
XYZ	xyz(17.5030, 14.4873, 60.8933)
Luminance	0.1449 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964CF #CFA439

analogous

#39AFCF #3964CF #5939CF

triadic

#3964CF #CF3964 #64CF39

tetradic

#3964CF #CF39AF #CFA439 #39CF59

square

#3964CF #CF39AF #CFA439 #39CF59

split-complementary

#3964CF #CF5939 #AFCF39

monochromatic

#1C3472 #284BA3 #3964CF #6A8BDB #9CB1E7

Accessibility & contrast

On white

5.39

#3964CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#3964CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964CF

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964CF	#FFFFFF	#000000	##FFFFFF
##3964CF	1.00	5.39	3.90	5.39
#FFFFFF	5.39	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D72D3

Deuteranopia (green-blind)

#0064CD

Tritanopia (blue-blind)

#007E90

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3964cf;
/* rgb */ color: rgb(57, 100, 207);
/* oklch */ color: oklch(53.3% 0.173 264.7);

Tailwind

colors: {
  custom: {
    50: '#838fde',
    500: '#3964cf',
    950: '#000000',
  },
}

SCSS

$custom: #3964cf;
$custom-light: #838fde;
$custom-dark: #000000;

JSON

{
  "hex": "#3964cf",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 207
  },
  "hsl": {
    "h": 222.8,
    "s": 60.976,
    "l": 51.765
  },
  "oklch": {
    "l": 0.53296,
    "c": 0.17257,
    "h": 264.7
  },
  "luminance": 0.14489
}

Semantic roles & 50–950 ramp

primary

#3964CF

secondary

#D3C091

accent

#B644E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3964CF

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

Preview Lab → · Contrast checker → · Palette generator →