#3768CB#3768CB

#3768CB is a mid, vivid blue. Relative luminance 0.150; OKLCH L 53.8% C 0.163 H 262.5°. Best body text is #FFFFFF at 5.24:1 contrast (WCAG AA passes).

Color values

HEX	#3768CB
RGB	rgb(55, 104, 203)
HSL	hsl(220, 59%, 51%)
HSV	hsv(220, 73%, 80%)
CMYK	cmyk(72.9%, 48.8%, 0%, 20.4%)
CIE-LAB	lab(45.67, 17.57, -56.25)
CIE-LCH	lch(45.67, 58.93, 287.35°)
OKLab	oklab(53.75% -0.0213 -0.1615)
OKLCH	oklch(53.75% 0.163 262.5)
XYZ	xyz(17.3015, 15.0228, 58.4762)
Luminance	0.1502 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3768CB #CB9A37

analogous

#37B2CB #3768CB #5037CB

triadic

#3768CB #CB3768 #68CB37

tetradic

#3768CB #CB37B2 #CB9A37 #37CB50

square

#3768CB #CB37B2 #CB9A37 #37CB50

split-complementary

#3768CB #CB5037 #B2CB37

monochromatic

#1C366C #294F9C #3768CB #688DD8 #98B1E4

Accessibility & contrast

On white

5.24

#3768CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#3768CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3768CB

5.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3768CB	#FFFFFF	#000000	##FFFFFF
##3768CB	1.00	5.24	4.00	5.24
#FFFFFF	5.24	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3073CF

Deuteranopia (green-blind)

#0066C9

Tritanopia (blue-blind)

#007F90

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3768cb;
/* rgb */ color: rgb(55, 104, 203);
/* oklch */ color: oklch(53.8% 0.163 262.5);

Tailwind

colors: {
  custom: {
    50: '#8192db',
    500: '#3768cb',
    950: '#000000',
  },
}

SCSS

$custom: #3768cb;
$custom-light: #8192db;
$custom-dark: #000000;

JSON

{
  "hex": "#3768cb",
  "rgb": {
    "r": 55,
    "g": 104,
    "b": 203
  },
  "hsl": {
    "h": 220.135,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.53753,
    "c": 0.16293,
    "h": 262.5
  },
  "luminance": 0.15025
}

Semantic roles & 50–950 ramp

primary

#3768CB

secondary

#D0BA8E

accent

#AE46E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3768CB

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

Preview Lab → · Contrast checker → · Palette generator →