#3966CD#3966CD

#3966CD is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.6% C 0.167 H 263.9°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3966CD
RGB	rgb(57, 102, 205)
HSL	hsl(222, 60%, 51%)
HSV	hsv(222, 72%, 80%)
CMYK	cmyk(72.2%, 50.2%, 0%, 19.6%)
CIE-LAB	lab(45.33, 19.85, -57.93)
CIE-LCH	lch(45.33, 61.24, 288.91°)
OKLab	oklab(53.56% -0.0178 -0.1665)
OKLCH	oklch(53.56% 0.167 263.9)
XYZ	xyz(17.4543, 14.7785, 59.6784)
Luminance	0.1478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966CD #CDA039

analogous

#39B0CD #3966CD #5639CD

triadic

#3966CD #CD3966 #66CD39

tetradic

#3966CD #CD39B0 #CDA039 #39CD56

square

#3966CD #CD39B0 #CDA039 #39CD56

split-complementary

#3966CD #CD5639 #B0CD39

monochromatic

#1C356F #284DA0 #3966CD #6A8CD9 #9BB2E6

Accessibility & contrast

On white

5.31

#3966CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#3966CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966CD

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966CD	#FFFFFF	#000000	##FFFFFF
##3966CD	1.00	5.31	3.96	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2872D1

Deuteranopia (green-blind)

#0065CB

Tritanopia (blue-blind)

#007F90

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3966cd;
/* rgb */ color: rgb(57, 102, 205);
/* oklch */ color: oklch(53.6% 0.167 263.9);

Tailwind

colors: {
  custom: {
    50: '#8291dd',
    500: '#3966cd',
    950: '#000000',
  },
}

SCSS

$custom: #3966cd;
$custom-light: #8291dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3966cd",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 205
  },
  "hsl": {
    "h": 221.757,
    "s": 59.677,
    "l": 51.373
  },
  "oklch": {
    "l": 0.53561,
    "c": 0.16744,
    "h": 263.9
  },
  "luminance": 0.1478
}

Semantic roles & 50–950 ramp

primary

#3966CD

secondary

#D2BE90

accent

#B345E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3966CD

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

Preview Lab → · Contrast checker → · Palette generator →