#3966D0#3966D0

#3966D0 is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.8% C 0.171 H 264.1°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#3966D0
RGB	rgb(57, 102, 208)
HSL	hsl(222, 62%, 52%)
HSV	hsv(222, 73%, 82%)
CMYK	cmyk(72.6%, 51%, 0%, 18.4%)
CIE-LAB	lab(45.53, 20.95, -59.33)
CIE-LCH	lch(45.53, 62.92, 289.45°)
OKLab	oklab(53.78% -0.0175 -0.1706)
OKLCH	oklch(53.78% 0.171 264.1)
XYZ	xyz(17.8199, 14.9248, 61.6039)
Luminance	0.1493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3966D0 #D0A339

analogous

#39B2D0 #3966D0 #5739D0

triadic

#3966D0 #D03966 #66D039

tetradic

#3966D0 #D039B2 #D0A339 #39D057

square

#3966D0 #D039B2 #D0A339 #39D057

split-complementary

#3966D0 #D05739 #B2D039

monochromatic

#1B3673 #274DA5 #3966D0 #6A8CDC #9CB2E7

Accessibility & contrast

On white

5.27

#3966D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#3966D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3966D0

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3966D0	#FFFFFF	#000000	##FFFFFF
##3966D0	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2373D4

Deuteranopia (green-blind)

#0065CE

Tritanopia (blue-blind)

#007F91

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3966d0;
/* rgb */ color: rgb(57, 102, 208);
/* oklch */ color: oklch(53.8% 0.171 264.1);

Tailwind

colors: {
  custom: {
    50: '#8391df',
    500: '#3966d0',
    950: '#000000',
  },
}

SCSS

$custom: #3966d0;
$custom-light: #8391df;
$custom-dark: #000000;

JSON

{
  "hex": "#3966d0",
  "rgb": {
    "r": 57,
    "g": 102,
    "b": 208
  },
  "hsl": {
    "h": 222.119,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53779,
    "c": 0.17149,
    "h": 264.1
  },
  "luminance": 0.14927
}

Semantic roles & 50–950 ramp

primary

#3966D0

secondary

#D3C091

accent

#B543E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3966D0

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

Preview Lab → · Contrast checker → · Palette generator →