#3766C5#3766C5

#3766C5 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.9% C 0.157 H 262.5°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3766C5
RGB	rgb(55, 102, 197)
HSL	hsl(220, 56%, 49%)
HSV	hsv(220, 72%, 77%)
CMYK	cmyk(72.1%, 48.2%, 0%, 22.7%)
CIE-LAB	lab(44.72, 16.63, -54.31)
CIE-LCH	lch(44.72, 56.80, 287.02°)
OKLab	oklab(52.91% -0.0205 -0.1559)
OKLCH	oklch(52.91% 0.157 262.5)
XYZ	xyz(16.4014, 14.3444, 54.7169)
Luminance	0.1435 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766C5 #C59637

analogous

#37ADC5 #3766C5 #4F37C5

triadic

#3766C5 #C53766 #66C537

tetradic

#3766C5 #C537AD #C59637 #37C54F

square

#3766C5 #C537AD #C59637 #37C54F

split-complementary

#3766C5 #C54F37 #ADC537

monochromatic

#1C3465 #2A4D95 #3766C5 #658AD4 #95AEE1

Accessibility & contrast

On white

5.43

#3766C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3766C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766C5

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766C5	#FFFFFF	#000000	##FFFFFF
##3766C5	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3171C9

Deuteranopia (green-blind)

#0464C3

Tritanopia (blue-blind)

#007C8C

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3766c5;
/* rgb */ color: rgb(55, 102, 197);
/* oklch */ color: oklch(52.9% 0.157 262.5);

Tailwind

colors: {
  custom: {
    50: '#8091d7',
    500: '#3766c5',
    950: '#000000',
  },
}

SCSS

$custom: #3766c5;
$custom-light: #8091d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3766c5",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 197
  },
  "hsl": {
    "h": 220.141,
    "s": 56.349,
    "l": 49.412
  },
  "oklch": {
    "l": 0.52907,
    "c": 0.15721,
    "h": 262.5
  },
  "luminance": 0.14346
}

Semantic roles & 50–950 ramp

primary

#3766C5

secondary

#CDB78B

accent

#AE48E0

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3766C5

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

Preview Lab → · Contrast checker → · Palette generator →