#3766CE#3766CE

#3766CE is a mid, vivid blue. Relative luminance 0.148; OKLCH L 53.5% C 0.169 H 263.5°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3766CE
RGB	rgb(55, 102, 206)
HSL	hsl(221, 61%, 51%)
HSV	hsv(221, 73%, 81%)
CMYK	cmyk(73.3%, 50.5%, 0%, 19.2%)
CIE-LAB	lab(45.32, 19.95, -58.53)
CIE-LCH	lch(45.32, 61.84, 288.82°)
OKLab	oklab(53.55% -0.0193 -0.1683)
OKLCH	oklch(53.55% 0.169 263.5)
XYZ	xyz(17.4635, 14.7693, 60.3109)
Luminance	0.1477 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766CE #CE9F37

analogous

#37B1CE #3766CE #5337CE

triadic

#3766CE #CE3766 #66CE37

tetradic

#3766CE #CE37B1 #CE9F37 #37CE53

square

#3766CE #CE37B1 #CE9F37 #37CE53

split-complementary

#3766CE #CE5337 #B1CE37

monochromatic

#1B356F #274DA0 #3766CE #688CDA #99B1E6

Accessibility & contrast

On white

5.31

#3766CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#3766CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766CE

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766CE	#FFFFFF	#000000	##FFFFFF
##3766CE	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2673D2

Deuteranopia (green-blind)

#0065CC

Tritanopia (blue-blind)

#007F90

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3766ce;
/* rgb */ color: rgb(55, 102, 206);
/* oklch */ color: oklch(53.5% 0.169 263.5);

Tailwind

colors: {
  custom: {
    50: '#8191de',
    500: '#3766ce',
    950: '#000000',
  },
}

SCSS

$custom: #3766ce;
$custom-light: #8191de;
$custom-dark: #000000;

JSON

{
  "hex": "#3766ce",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 206
  },
  "hsl": {
    "h": 221.325,
    "s": 60.643,
    "l": 51.176
  },
  "oklch": {
    "l": 0.5355,
    "c": 0.16939,
    "h": 263.5
  },
  "luminance": 0.14771
}

Semantic roles & 50–950 ramp

primary

#3766CE

secondary

#D2BD8F

accent

#B244E4

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3766CE

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

Preview Lab → · Contrast checker → · Palette generator →