#3964BB#3964BB

#3964BB is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.9% C 0.145 H 262.6°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#3964BB
RGB	rgb(57, 100, 187)
HSL	hsl(220, 53%, 48%)
HSV	hsv(220, 70%, 73%)
CMYK	cmyk(69.5%, 46.5%, 0%, 26.7%)
CIE-LAB	lab(43.61, 14.52, -50.30)
CIE-LCH	lch(43.61, 52.36, 286.10°)
OKLab	oklab(51.87% -0.0186 -0.1441)
OKLCH	oklch(51.87% 0.145 262.6)
XYZ	xyz(15.2110, 13.5705, 48.8218)
Luminance	0.1357 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3964BB #BB9039

analogous

#39A5BB #3964BB #4F39BB

triadic

#3964BB #BB3964 #64BB39

tetradic

#3964BB #BB39A5 #BB9039 #39BB4F

square

#3964BB #BB39A5 #BB9039 #39BB4F

split-complementary

#3964BB #BB4F39 #A5BB39

monochromatic

#1C325D #2B4B8C #3964BB #6286CF #91AADD

Accessibility & contrast

On white

5.65

#3964BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3964BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3964BB

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3964BB	#FFFFFF	#000000	##FFFFFF
##3964BB	1.00	5.65	3.71	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#376DBE

Deuteranopia (green-blind)

#1C61B9

Tritanopia (blue-blind)

#007886

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3964bb;
/* rgb */ color: rgb(57, 100, 187);
/* oklch */ color: oklch(51.9% 0.145 262.6);

Tailwind

colors: {
  custom: {
    50: '#7e8fd0',
    500: '#3964bb',
    950: '#000000',
  },
}

SCSS

$custom: #3964bb;
$custom-light: #7e8fd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3964bb",
  "rgb": {
    "r": 57,
    "g": 100,
    "b": 187
  },
  "hsl": {
    "h": 220.154,
    "s": 53.279,
    "l": 47.843
  },
  "oklch": {
    "l": 0.51873,
    "c": 0.14525,
    "h": 262.6
  },
  "luminance": 0.13572
}

Semantic roles & 50–950 ramp

primary

#3964BB

secondary

#C8B387

accent

#AD4BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3964BB

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

Preview Lab → · Contrast checker → · Palette generator →