#3766CA#3766CA

#3766CA is a mid, vivid blue. Relative luminance 0.146; OKLCH L 53.3% C 0.164 H 263.1°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#3766CA
RGB	rgb(55, 102, 202)
HSL	hsl(221, 58%, 50%)
HSV	hsv(221, 73%, 79%)
CMYK	cmyk(72.8%, 49.5%, 0%, 20.8%)
CIE-LAB	lab(45.05, 18.48, -56.67)
CIE-LCH	lch(45.05, 59.60, 288.06°)
OKLab	oklab(53.26% -0.0198 -0.1628)
OKLCH	oklch(53.26% 0.164 263.1)
XYZ	xyz(16.9838, 14.5774, 57.7843)
Luminance	0.1458 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766CA #CA9B37

analogous

#37B0CA #3766CA #5137CA

triadic

#3766CA #CA3766 #66CA37

tetradic

#3766CA #CA37B0 #CA9B37 #37CA51

square

#3766CA #CA37B0 #CA9B37 #37CA51

split-complementary

#3766CA #CA5137 #B0CA37

monochromatic

#1C356A #294D9B #3766CA #678BD7 #98B0E4

Accessibility & contrast

On white

5.36

#3766CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#3766CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766CA

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766CA	#FFFFFF	#000000	##FFFFFF
##3766CA	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C72CE

Deuteranopia (green-blind)

#0064C8

Tritanopia (blue-blind)

#007E8E

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3766ca;
/* rgb */ color: rgb(55, 102, 202);
/* oklch */ color: oklch(53.3% 0.164 263.1);

Tailwind

colors: {
  custom: {
    50: '#8191db',
    500: '#3766ca',
    950: '#000000',
  },
}

SCSS

$custom: #3766ca;
$custom-light: #8191db;
$custom-dark: #000000;

JSON

{
  "hex": "#3766ca",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 202
  },
  "hsl": {
    "h": 220.816,
    "s": 58.103,
    "l": 50.392
  },
  "oklch": {
    "l": 0.53262,
    "c": 0.16399,
    "h": 263.1
  },
  "luminance": 0.14579
}

Semantic roles & 50–950 ramp

primary

#3766CA

secondary

#CFBA8E

accent

#B046E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3766CA

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

Preview Lab → · Contrast checker → · Palette generator →