#3668BD#3668BD

#3668BD is a mid, vivid blue. Relative luminance 0.144; OKLCH L 52.7% C 0.144 H 260.3°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3668BD
RGB	rgb(54, 104, 189)
HSL	hsl(218, 56%, 48%)
HSV	hsv(218, 71%, 74%)
CMYK	cmyk(71.4%, 45%, 0%, 25.9%)
CIE-LAB	lab(44.74, 12.25, -49.66)
CIE-LCH	lch(44.74, 51.15, 283.86°)
OKLab	oklab(52.75% -0.0243 -0.1421)
OKLCH	oklch(52.75% 0.144 260.3)
XYZ	xyz(15.6536, 14.3574, 50.0805)
Luminance	0.1436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668BD #BD8B36

analogous

#36ABBD #3668BD #4836BD

triadic

#3668BD #BD3668 #68BD36

tetradic

#3668BD #BD36AB #BD8B36 #36BD48

square

#3668BD #BD36AB #BD8B36 #36BD48

split-complementary

#3668BD #BD4836 #ABBD36

monochromatic

#1B345E #284E8D #3668BD #5F89D1 #8FACDF

Accessibility & contrast

On white

5.42

#3668BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3668BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668BD

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668BD	#FFFFFF	#000000	##FFFFFF
##3668BD	1.00	5.42	3.87	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D70C0

Deuteranopia (green-blind)

#2364BB

Tritanopia (blue-blind)

#007C89

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3668bd;
/* rgb */ color: rgb(54, 104, 189);
/* oklch */ color: oklch(52.7% 0.144 260.3);

Tailwind

colors: {
  custom: {
    50: '#7e92d1',
    500: '#3668bd',
    950: '#000000',
  },
}

SCSS

$custom: #3668bd;
$custom-light: #7e92d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3668bd",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 189
  },
  "hsl": {
    "h": 217.778,
    "s": 55.556,
    "l": 47.647
  },
  "oklch": {
    "l": 0.52748,
    "c": 0.14421,
    "h": 260.3
  },
  "luminance": 0.14359
}

Semantic roles & 50–950 ramp

primary

#3668BD

secondary

#C9B085

accent

#A749DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3668BD

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

Preview Lab → · Contrast checker → · Palette generator →