#3966CA#3966CA

#3966CA is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.3% C 0.163 H 263.6°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#3966CA
RGB	rgb(57, 102, 202)
HSL	hsl(221, 58%, 51%)
HSV	hsv(221, 72%, 79%)
CMYK	cmyk(71.8%, 49.5%, 0%, 20.8%)
CIE-LAB	lab(45.13, 18.75, -56.53)
CIE-LCH	lch(45.13, 59.56, 288.35°)
OKLab	oklab(53.35% -0.0182 -0.1624)
OKLCH	oklch(53.35% 0.163 263.6)
XYZ	xyz(17.0956, 14.6351, 57.7895)
Luminance	0.1464 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966CA #CA9D39

analogous

#39AFCA #3966CA #5439CA

triadic

#3966CA #CA3966 #66CA39

tetradic

#3966CA #CA39AF #CA9D39 #39CA54

square

#3966CA #CA39AF #CA9D39 #39CA54

split-complementary

#3966CA #CA5439 #AFCA39

monochromatic

#1D356C #2A4D9C #3966CA #698BD7 #9AB1E4

Accessibility & contrast

On white

5.35

#3966CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#3966CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966CA

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966CA	#FFFFFF	#000000	##FFFFFF
##3966CA	1.00	5.35	3.93	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C72CE

Deuteranopia (green-blind)

#0065C8

Tritanopia (blue-blind)

#007E8E

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3966ca;
/* rgb */ color: rgb(57, 102, 202);
/* oklch */ color: oklch(53.3% 0.163 263.6);

Tailwind

colors: {
  custom: {
    50: '#8191db',
    500: '#3966ca',
    950: '#000000',
  },
}

SCSS

$custom: #3966ca;
$custom-light: #8191db;
$custom-dark: #000000;

JSON

{
  "hex": "#3966ca",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 202
  },
  "hsl": {
    "h": 221.379,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.53346,
    "c": 0.16338,
    "h": 263.6
  },
  "luminance": 0.14637
}

Semantic roles & 50–950 ramp

primary

#3966CA

secondary

#D0BC8F

accent

#B147E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3966CA

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

Preview Lab → · Contrast checker → · Palette generator →