#3668BC#3668BC

#3668BC is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.7% C 0.143 H 260.1°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3668BC
RGB	rgb(54, 104, 188)
HSL	hsl(218, 55%, 47%)
HSV	hsv(218, 71%, 74%)
CMYK	cmyk(71.3%, 44.7%, 0%, 26.3%)
CIE-LAB	lab(44.68, 11.89, -49.17)
CIE-LCH	lch(44.68, 50.59, 283.59°)
OKLab	oklab(52.68% -0.0245 -0.1407)
OKLCH	oklch(52.68% 0.143 260.1)
XYZ	xyz(15.5455, 14.3141, 49.5108)
Luminance	0.1432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3668BC #BC8A36

analogous

#36ABBC #3668BC #4736BC

triadic

#3668BC #BC3668 #68BC36

tetradic

#3668BC #BC36AB #BC8A36 #36BC47

square

#3668BC #BC36AB #BC8A36 #36BC47

split-complementary

#3668BC #BC4736 #ABBC36

monochromatic

#1B335D #284E8C #3668BC #5E89D1 #8EACDF

Accessibility & contrast

On white

5.44

#3668BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3668BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3668BC

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3668BC	#FFFFFF	#000000	##FFFFFF
##3668BC	1.00	5.44	3.86	5.44
#FFFFFF	5.44	1.00	21.00	1.00
#000000	3.86	21.00	1.00	21.00
##FFFFFF	5.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E70BF

Deuteranopia (green-blind)

#2464BA

Tritanopia (blue-blind)

#007C89

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3668bc;
/* rgb */ color: rgb(54, 104, 188);
/* oklch */ color: oklch(52.7% 0.143 260.1);

Tailwind

colors: {
  custom: {
    50: '#7d92d1',
    500: '#3668bc',
    950: '#000000',
  },
}

SCSS

$custom: #3668bc;
$custom-light: #7d92d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3668bc",
  "rgb": {
    "r": 54,
    "g": 104,
    "b": 188
  },
  "hsl": {
    "h": 217.612,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52682,
    "c": 0.14284,
    "h": 260.1
  },
  "luminance": 0.14316
}

Semantic roles & 50–950 ramp

primary

#3668BC

secondary

#C9B085

accent

#A749DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3668BC

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

Preview Lab → · Contrast checker → · Palette generator →