#3964CC#3964CC

#3964CC is a mid, vivid blue. Relative luminance 0.143; OKLCH L 53.1% C 0.169 H 264.4°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3964CC
RGB	rgb(57, 100, 204)
HSL	hsl(222, 59%, 51%)
HSV	hsv(222, 72%, 80%)
CMYK	cmyk(72.1%, 51%, 0%, 20%)
CIE-LAB	lab(44.72, 20.76, -58.35)
CIE-LCH	lch(44.72, 61.93, 289.59°)
OKLab	oklab(53.08% -0.0163 -0.1677)
OKLCH	oklch(53.08% 0.169 264.4)
XYZ	xyz(17.1397, 14.3420, 58.9800)
Luminance	0.1434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964CC #CCA139

analogous

#39ADCC #3964CC #5739CC

triadic

#3964CC #CC3964 #64CC39

tetradic

#3964CC #CC39AD #CCA139 #39CC57

square

#3964CC #CC39AD #CCA139 #39CC57

split-complementary

#3964CC #CC5739 #ADCC39

monochromatic

#1C346E #294B9F #3964CC #6A8AD9 #9AB0E5

Accessibility & contrast

On white

5.43

#3964CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3964CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964CC

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964CC	#FFFFFF	#000000	##FFFFFF
##3964CC	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2371D0

Deuteranopia (green-blind)

#0063CA

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3964cc;
/* rgb */ color: rgb(57, 100, 204);
/* oklch */ color: oklch(53.1% 0.169 264.4);

Tailwind

colors: {
  custom: {
    50: '#828fdc',
    500: '#3964cc',
    950: '#000000',
  },
}

SCSS

$custom: #3964cc;
$custom-light: #828fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3964cc",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 204
  },
  "hsl": {
    "h": 222.449,
    "s": 59.036,
    "l": 51.176
  },
  "oklch": {
    "l": 0.53075,
    "c": 0.16852,
    "h": 264.4
  },
  "luminance": 0.14344
}

Semantic roles & 50–950 ramp

primary

#3964CC

secondary

#D1BE90

accent

#B446E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3964CC

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

Preview Lab → · Contrast checker → · Palette generator →