#3766BF#3766BF

#3766BF is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.149 H 261.8°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3766BF
RGB	rgb(55, 102, 191)
HSL	hsl(219, 55%, 48%)
HSV	hsv(219, 71%, 75%)
CMYK	cmyk(71.2%, 46.6%, 0%, 25.1%)
CIE-LAB	lab(44.34, 14.41, -51.46)
CIE-LCH	lch(44.34, 53.44, 285.65°)
OKLab	oklab(52.49% -0.0214 -0.1475)
OKLCH	oklch(52.49% 0.149 261.8)
XYZ	xyz(15.7275, 14.0749, 51.1680)
Luminance	0.1408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766BF #BF9037

analogous

#37AABF #3766BF #4C37BF

triadic

#3766BF #BF3766 #66BF37

tetradic

#3766BF #BF37AA #BF9037 #37BF4C

square

#3766BF #BF37AA #BF9037 #37BF4C

split-complementary

#3766BF #BF4C37 #AABF37

monochromatic

#1C3360 #294D8F #3766BF #6288D2 #91ACDF

Accessibility & contrast

On white

5.50

#3766BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3766BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766BF

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766BF	#FFFFFF	#000000	##FFFFFF
##3766BF	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3870C2

Deuteranopia (green-blind)

#1963BD

Tritanopia (blue-blind)

#007B89

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3766bf;
/* rgb */ color: rgb(55, 102, 191);
/* oklch */ color: oklch(52.5% 0.149 261.8);

Tailwind

colors: {
  custom: {
    50: '#7e91d3',
    500: '#3766bf',
    950: '#000000',
  },
}

SCSS

$custom: #3766bf;
$custom-light: #7e91d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3766bf",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 191
  },
  "hsl": {
    "h": 219.265,
    "s": 55.285,
    "l": 48.235
  },
  "oklch": {
    "l": 0.52491,
    "c": 0.14901,
    "h": 261.8
  },
  "luminance": 0.14077
}

Semantic roles & 50–950 ramp

primary

#3766BF

secondary

#CAB388

accent

#AB49DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3766BF

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

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