#3964BC#3964BC

#3964BC is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.9% C 0.147 H 262.8°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#3964BC
RGB	rgb(57, 100, 188)
HSL	hsl(220, 53%, 48%)
HSV	hsv(220, 70%, 74%)
CMYK	cmyk(69.7%, 46.8%, 0%, 26.3%)
CIE-LAB	lab(43.67, 14.89, -50.78)
CIE-LCH	lch(43.67, 52.92, 286.34°)
OKLab	oklab(51.94% -0.0184 -0.1455)
OKLCH	oklch(51.94% 0.147 262.8)
XYZ	xyz(15.3184, 13.6135, 49.3876)
Luminance	0.1361 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964BC #BC9139

analogous

#39A5BC #3964BC #4F39BC

triadic

#3964BC #BC3964 #64BC39

tetradic

#3964BC #BC39A5 #BC9139 #39BC4F

square

#3964BC #BC39A5 #BC9139 #39BC4F

split-complementary

#3964BC #BC4F39 #A5BC39

monochromatic

#1D325E #2B4B8D #3964BC #6386D0 #92ABDE

Accessibility & contrast

On white

5.64

#3964BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#3964BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964BC

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964BC	#FFFFFF	#000000	##FFFFFF
##3964BC	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#366EBF

Deuteranopia (green-blind)

#1A62BA

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3964bc;
/* rgb */ color: rgb(57, 100, 188);
/* oklch */ color: oklch(51.9% 0.147 262.8);

Tailwind

colors: {
  custom: {
    50: '#7f8fd1',
    500: '#3964bc',
    950: '#000000',
  },
}

SCSS

$custom: #3964bc;
$custom-light: #7f8fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3964bc",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 188
  },
  "hsl": {
    "h": 220.305,
    "s": 53.469,
    "l": 48.039
  },
  "oklch": {
    "l": 0.51941,
    "c": 0.14664,
    "h": 262.8
  },
  "luminance": 0.13615
}

Semantic roles & 50–950 ramp

primary

#3964BC

secondary

#C9B488

accent

#AD4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3964BC

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

Preview Lab → · Contrast checker → · Palette generator →