#3966C1#3966C1

#3966C1 is a mid, vivid blue. Relative luminance 0.142; OKLCH L 52.7% C 0.151 H 262.6°. Best body text is #FFFFFF at 5.46:1 contrast (WCAG AA passes).

Color values

HEX	#3966C1
RGB	rgb(57, 102, 193)
HSL	hsl(220, 54%, 49%)
HSV	hsv(220, 70%, 76%)
CMYK	cmyk(70.5%, 47.2%, 0%, 24.3%)
CIE-LAB	lab(44.55, 15.44, -52.28)
CIE-LCH	lch(44.55, 54.51, 286.46°)
OKLab	oklab(52.71% -0.0195 -0.1498)
OKLCH	oklch(52.71% 0.151 262.6)
XYZ	xyz(16.0609, 14.2212, 52.3403)
Luminance	0.1422 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966C1 #C19439

analogous

#39AAC1 #3966C1 #5039C1

triadic

#3966C1 #C13966 #66C139

tetradic

#3966C1 #C139AA #C19439 #39C150

square

#3966C1 #C139AA #C19439 #39C150

split-complementary

#3966C1 #C15039 #AAC139

monochromatic

#1D3463 #2B4D92 #3966C1 #6689D2 #95AEE0

Accessibility & contrast

On white

5.46

#3966C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.84

#3966C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966C1

5.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966C1	#FFFFFF	#000000	##FFFFFF
##3966C1	1.00	5.46	3.84	5.46
#FFFFFF	5.46	1.00	21.00	1.00
#000000	3.84	21.00	1.00	21.00
##FFFFFF	5.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3670C4

Deuteranopia (green-blind)

#1663BF

Tritanopia (blue-blind)

#007B8A

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3966c1;
/* rgb */ color: rgb(57, 102, 193);
/* oklch */ color: oklch(52.7% 0.151 262.6);

Tailwind

colors: {
  custom: {
    50: '#8091d4',
    500: '#3966c1',
    950: '#000000',
  },
}

SCSS

$custom: #3966c1;
$custom-light: #8091d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3966c1",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 193
  },
  "hsl": {
    "h": 220.147,
    "s": 54.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.52714,
    "c": 0.1511,
    "h": 262.6
  },
  "luminance": 0.14223
}

Semantic roles & 50–950 ramp

primary

#3966C1

secondary

#CBB68B

accent

#AD4ADE

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3966C1

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

Preview Lab → · Contrast checker → · Palette generator →