#3766DA#3766DA

#3766DA is a mid, vivid blue. Relative luminance 0.154; OKLCH L 54.4% C 0.185 H 264.4°. Best body text is #FFFFFF at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#3766DA
RGB	rgb(55, 102, 218)
HSL	hsl(223, 69%, 54%)
HSV	hsv(223, 75%, 85%)
CMYK	cmyk(74.8%, 53.2%, 0%, 14.5%)
CIE-LAB	lab(46.14, 24.38, -64.05)
CIE-LCH	lch(46.14, 68.53, 290.84°)
OKLab	oklab(54.44% -0.0181 -0.1845)
OKLCH	oklch(54.44% 0.185 264.4)
XYZ	xyz(18.9773, 15.3748, 68.2835)
Luminance	0.1538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766DA #DAAB37

analogous

#37B8DA #3766DA #5937DA

triadic

#3766DA #DA3766 #66DA37

tetradic

#3766DA #DA37B8 #DAAB37 #37DA59

square

#3766DA #DA37B8 #DAAB37 #37DA59

split-complementary

#3766DA #DA5937 #B8DA37

monochromatic

#18357F #214BB3 #3766DA #6B8EE4 #9EB5ED

Accessibility & contrast

On white

5.15

#3766DA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.08

#3766DA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766DA

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766DA	#FFFFFF	#000000	##FFFFFF
##3766DA	1.00	5.15	4.08	5.15
#FFFFFF	5.15	1.00	21.00	1.00
#000000	4.08	21.00	1.00	21.00
##FFFFFF	5.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0775DE

Deuteranopia (green-blind)

#0066D8

Tritanopia (blue-blind)

#008296

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #3766da;
/* rgb */ color: rgb(55, 102, 218);
/* oklch */ color: oklch(54.4% 0.185 264.4);

Tailwind

colors: {
  custom: {
    50: '#8491e6',
    500: '#3766da',
    950: '#000000',
  },
}

SCSS

$custom: #3766da;
$custom-light: #8491e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3766da",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 218
  },
  "hsl": {
    "h": 222.699,
    "s": 68.776,
    "l": 53.529
  },
  "oklch": {
    "l": 0.54441,
    "c": 0.18539,
    "h": 264.4
  },
  "luminance": 0.15377
}

Semantic roles & 50–950 ramp

primary

#3766DA

secondary

#D9C593

accent

#B93CEC

background

#F8F8FE

surface

#F0F0FC

border

#CBCBD5

text

#0C0C16

muted

#7D7D84

Preview Lab

Preview with #3766DA

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

Preview Lab → · Contrast checker → · Palette generator →