#3966C3#3966C3

#3966C3 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.9% C 0.154 H 262.8°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3966C3
RGB	rgb(57, 102, 195)
HSL	hsl(220, 55%, 49%)
HSV	hsv(220, 71%, 76%)
CMYK	cmyk(70.8%, 47.7%, 0%, 23.5%)
CIE-LAB	lab(44.68, 16.18, -53.23)
CIE-LCH	lch(44.68, 55.63, 286.90°)
OKLab	oklab(52.85% -0.0192 -0.1526)
OKLCH	oklch(52.85% 0.154 262.8)
XYZ	xyz(16.2855, 14.3110, 53.5232)
Luminance	0.1431 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966C3 #C39639

analogous

#39ABC3 #3966C3 #5139C3

triadic

#3966C3 #C33966 #66C339

tetradic

#3966C3 #C339AB #C39639 #39C351

square

#3966C3 #C339AB #C39639 #39C351

split-complementary

#3966C3 #C35139 #ABC339

monochromatic

#1D3464 #2B4D94 #3966C3 #678AD2 #96AEE0

Accessibility & contrast

On white

5.44

#3966C3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3966C3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966C3

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966C3	#FFFFFF	#000000	##FFFFFF
##3966C3	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3470C6

Deuteranopia (green-blind)

#0F64C1

Tritanopia (blue-blind)

#007C8B

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3966c3;
/* rgb */ color: rgb(57, 102, 195);
/* oklch */ color: oklch(52.9% 0.154 262.8);

Tailwind

colors: {
  custom: {
    50: '#8091d6',
    500: '#3966c3',
    950: '#000000',
  },
}

SCSS

$custom: #3966c3;
$custom-light: #8091d6;
$custom-dark: #000000;

JSON

{
  "hex": "#3966c3",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 195
  },
  "hsl": {
    "h": 220.435,
    "s": 54.762,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52852,
    "c": 0.15384,
    "h": 262.8
  },
  "luminance": 0.14313
}

Semantic roles & 50–950 ramp

primary

#3966C3

secondary

#CCB78C

accent

#AE4ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3966C3

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

Preview Lab → · Contrast checker → · Palette generator →