#3766C6#3766C6

#3766C6 is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.0% C 0.159 H 262.6°. Best body text is #FFFFFF at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#3766C6
RGB	rgb(55, 102, 198)
HSL	hsl(220, 57%, 50%)
HSV	hsv(220, 72%, 78%)
CMYK	cmyk(72.2%, 48.5%, 0%, 22.4%)
CIE-LAB	lab(44.79, 17.00, -54.79)
CIE-LCH	lch(44.79, 57.36, 287.24°)
OKLab	oklab(52.98% -0.0203 -0.1573)
OKLCH	oklch(52.98% 0.159 262.6)
XYZ	xyz(16.5163, 14.3904, 55.3223)
Luminance	0.1439 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766C6 #C69737

analogous

#37AEC6 #3766C6 #5037C6

triadic

#3766C6 #C63766 #66C637

tetradic

#3766C6 #C637AE #C69737 #37C650

square

#3766C6 #C637AE #C69737 #37C650

split-complementary

#3766C6 #C65037 #AEC637

monochromatic

#1C3566 #2A4D96 #3766C6 #668AD4 #96AFE2

Accessibility & contrast

On white

5.41

#3766C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3766C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766C6

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766C6	#FFFFFF	#000000	##FFFFFF
##3766C6	1.00	5.41	3.88	5.41
#FFFFFF	5.41	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3071CA

Deuteranopia (green-blind)

#0064C4

Tritanopia (blue-blind)

#007D8C

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3766c6;
/* rgb */ color: rgb(55, 102, 198);
/* oklch */ color: oklch(53.0% 0.159 262.6);

Tailwind

colors: {
  custom: {
    50: '#8091d8',
    500: '#3766c6',
    950: '#000000',
  },
}

SCSS

$custom: #3766c6;
$custom-light: #8091d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3766c6",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 198
  },
  "hsl": {
    "h": 220.28,
    "s": 56.522,
    "l": 49.608
  },
  "oklch": {
    "l": 0.52978,
    "c": 0.15857,
    "h": 262.6
  },
  "luminance": 0.14392
}

Semantic roles & 50–950 ramp

primary

#3766C6

secondary

#CDB88C

accent

#AE48E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3766C6

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

Preview Lab → · Contrast checker → · Palette generator →