#3966BE#3966BE

#3966BE is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.147 H 262.2°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3966BE
RGB	rgb(57, 102, 190)
HSL	hsl(220, 54%, 48%)
HSV	hsv(220, 70%, 75%)
CMYK	cmyk(70%, 46.3%, 0%, 25.5%)
CIE-LAB	lab(44.36, 14.34, -50.84)
CIE-LCH	lch(44.36, 52.83, 285.75°)
OKLab	oklab(52.51% -0.0199 -0.1456)
OKLCH	oklch(52.51% 0.147 262.2)
XYZ	xyz(15.7297, 14.0887, 50.5956)
Luminance	0.1409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966BE #BE9139

analogous

#39A8BE #3966BE #4E39BE

triadic

#3966BE #BE3966 #66BE39

tetradic

#3966BE #BE39A8 #BE9139 #39BE4E

square

#3966BE #BE39A8 #BE9139 #39BE4E

split-complementary

#3966BE #BE4E39 #A8BE39

monochromatic

#1D3360 #2B4D8F #3966BE #6489D0 #93ACDF

Accessibility & contrast

On white

5.50

#3966BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3966BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966BE

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966BE	#FFFFFF	#000000	##FFFFFF
##3966BE	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396FC1

Deuteranopia (green-blind)

#1D63BC

Tritanopia (blue-blind)

#007B89

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3966be;
/* rgb */ color: rgb(57, 102, 190);
/* oklch */ color: oklch(52.5% 0.147 262.2);

Tailwind

colors: {
  custom: {
    50: '#7f91d2',
    500: '#3966be',
    950: '#000000',
  },
}

SCSS

$custom: #3966be;
$custom-light: #7f91d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3966be",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 190
  },
  "hsl": {
    "h": 219.699,
    "s": 53.846,
    "l": 48.431
  },
  "oklch": {
    "l": 0.52509,
    "c": 0.14698,
    "h": 262.2
  },
  "luminance": 0.1409
}

Semantic roles & 50–950 ramp

primary

#3966BE

secondary

#CAB489

accent

#AC4BDD

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3966BE

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

Preview Lab → · Contrast checker → · Palette generator →