#3768BB#3768BB

#3768BB is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.7% C 0.141 H 260.3°. Best body text is #FFFFFF at 5.44:1 contrast (WCAG AA passes).

Color values

HEX	#3768BB
RGB	rgb(55, 104, 187)
HSL	hsl(218, 55%, 47%)
HSV	hsv(218, 71%, 73%)
CMYK	cmyk(70.6%, 44.4%, 0%, 26.7%)
CIE-LAB	lab(44.66, 11.67, -48.63)
CIE-LCH	lch(44.66, 50.01, 283.49°)
OKLab	oklab(52.66% -0.0239 -0.1391)
OKLCH	oklch(52.66% 0.141 260.3)
XYZ	xyz(15.4923, 14.2991, 48.9476)
Luminance	0.1430 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3768BB #BB8A37

analogous

#37AABB #3768BB #4837BB

triadic

#3768BB #BB3768 #68BB37

tetradic

#3768BB #BB37AA #BB8A37 #37BB48

square

#3768BB #BB37AA #BB8A37 #37BB48

split-complementary

#3768BB #BB4837 #AABB37

monochromatic

#1B335C #294E8C #3768BB #5F89D0 #8EACDE

Accessibility & contrast

On white

5.44

#3768BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.86

#3768BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3768BB

5.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3768BB	#FFFFFF	#000000	##FFFFFF
##3768BB	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)

#3F70BE

Deuteranopia (green-blind)

#2764B9

Tritanopia (blue-blind)

#007B88

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3768bb;
/* rgb */ color: rgb(55, 104, 187);
/* oklch */ color: oklch(52.7% 0.141 260.3);

Tailwind

colors: {
  custom: {
    50: '#7e92d0',
    500: '#3768bb',
    950: '#000000',
  },
}

SCSS

$custom: #3768bb;
$custom-light: #7e92d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3768bb",
  "rgb": {
    "r": 55,
    "g": 104,
    "b": 187
  },
  "hsl": {
    "h": 217.727,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52657,
    "c": 0.14113,
    "h": 260.3
  },
  "luminance": 0.14301
}

Semantic roles & 50–950 ramp

primary

#3768BB

secondary

#C9B085

accent

#A74ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3768BB

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

Preview Lab → · Contrast checker → · Palette generator →