#3768CC#3768CC

#3768CC is a mid, vivid blue. Relative luminance 0.151; OKLCH L 53.8% C 0.164 H 262.6°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#3768CC
RGB	rgb(55, 104, 204)
HSL	hsl(220, 59%, 51%)
HSV	hsv(220, 73%, 80%)
CMYK	cmyk(73%, 49%, 0%, 20%)
CIE-LAB	lab(45.73, 17.94, -56.72)
CIE-LCH	lch(45.73, 59.49, 287.55°)
OKLab	oklab(53.82% -0.0212 -0.1629)
OKLCH	oklch(53.82% 0.164 262.6)
XYZ	xyz(17.4211, 15.0706, 59.1058)
Luminance	0.1507 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3768CC #CC9B37

analogous

#37B3CC #3768CC #5037CC

triadic

#3768CC #CC3768 #68CC37

tetradic

#3768CC #CC37B3 #CC9B37 #37CC50

square

#3768CC #CC37B3 #CC9B37 #37CC50

split-complementary

#3768CC #CC5037 #B3CC37

monochromatic

#1C366D #284F9E #3768CC #688DD8 #99B2E5

Accessibility & contrast

On white

5.23

#3768CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#3768CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3768CC

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3768CC	#FFFFFF	#000000	##FFFFFF
##3768CC	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E74D0

Deuteranopia (green-blind)

#0066CA

Tritanopia (blue-blind)

#008090

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3768cc;
/* rgb */ color: rgb(55, 104, 204);
/* oklch */ color: oklch(53.8% 0.164 262.6);

Tailwind

colors: {
  custom: {
    50: '#8192dc',
    500: '#3768cc',
    950: '#000000',
  },
}

SCSS

$custom: #3768cc;
$custom-light: #8192dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3768cc",
  "rgb": {
    "r": 55,
    "g": 104,
    "b": 204
  },
  "hsl": {
    "h": 220.268,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.53824,
    "c": 0.16428,
    "h": 262.6
  },
  "luminance": 0.15072
}

Semantic roles & 50–950 ramp

primary

#3768CC

secondary

#D0BB8E

accent

#AF45E3

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3768CC

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

Preview Lab → · Contrast checker → · Palette generator →