#3668D3#3668D3

#3668D3 is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.3% C 0.174 H 263.0°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3668D3
RGB	rgb(54, 104, 211)
HSL	hsl(221, 64%, 52%)
HSV	hsv(221, 74%, 83%)
CMYK	cmyk(74.4%, 50.7%, 0%, 17.3%)
CIE-LAB	lab(46.16, 20.40, -60.04)
CIE-LCH	lch(46.16, 63.41, 288.77°)
OKLab	oklab(54.29% -0.0211 -0.1727)
OKLCH	oklch(54.29% 0.174 263)
XYZ	xyz(18.2253, 15.3860, 63.6247)
Luminance	0.1539 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668D3 #D3A136

analogous

#36B6D3 #3668D3 #5336D3

triadic

#3668D3 #D33668 #68D336

tetradic

#3668D3 #D336B6 #D3A136 #36D353

square

#3668D3 #D336B6 #D3A136 #36D353

split-complementary

#3668D3 #D35336 #B6D336

monochromatic

#1A3775 #254EA7 #3668D3 #688EDE #9AB3E9

Accessibility & contrast

On white

5.15

#3668D3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#3668D3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668D3

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668D3	#FFFFFF	#000000	##FFFFFF
##3668D3	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2475D7

Deuteranopia (green-blind)

#0067D1

Tritanopia (blue-blind)

#008293

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3668d3;
/* rgb */ color: rgb(54, 104, 211);
/* oklch */ color: oklch(54.3% 0.174 263.0);

Tailwind

colors: {
  custom: {
    50: '#8292e1',
    500: '#3668d3',
    950: '#000000',
  },
}

SCSS

$custom: #3668d3;
$custom-light: #8292e1;
$custom-dark: #000000;

JSON

{
  "hex": "#3668d3",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 211
  },
  "hsl": {
    "h": 220.892,
    "s": 64.082,
    "l": 51.961
  },
  "oklch": {
    "l": 0.54289,
    "c": 0.17397,
    "h": 263
  },
  "luminance": 0.15388
}

Semantic roles & 50–950 ramp

primary

#3668D3

secondary

#D5BF90

accent

#B241E7

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3668D3

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

Preview Lab → · Contrast checker → · Palette generator →