#3766AB#3766AB

#3766AB is a mid, vivid blue. Relative luminance 0.133; OKLCH L 51.2% C 0.121 H 258.0°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#3766AB
RGB	rgb(55, 102, 171)
HSL	hsl(216, 51%, 44%)
HSV	hsv(216, 68%, 67%)
CMYK	cmyk(67.8%, 40.4%, 0%, 32.9%)
CIE-LAB	lab(43.14, 7.07, -41.69)
CIE-LCH	lch(43.14, 42.29, 279.63°)
OKLab	oklab(51.18% -0.0252 -0.1188)
OKLCH	oklch(51.18% 0.121 258)
XYZ	xyz(13.6750, 13.2539, 40.3578)
Luminance	0.1326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3766AB #AB7C37

analogous

#37A0AB #3766AB #4237AB

triadic

#3766AB #AB3766 #66AB37

tetradic

#3766AB #AB37A0 #AB7C37 #37AB42

square

#3766AB #AB37A0 #AB7C37 #37AB42

split-complementary

#3766AB #AB4237 #A0AB37

monochromatic

#192F4E #284A7D #3766AB #5685C9 #85A6D8

Accessibility & contrast

On white

5.75

#3766AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#3766AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3766AB

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3766AB	#FFFFFF	#000000	##FFFFFF
##3766AB	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#476CAE

Deuteranopia (green-blind)

#3561AA

Tritanopia (blue-blind)

#007680

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3766ab;
/* rgb */ color: rgb(55, 102, 171);
/* oklch */ color: oklch(51.2% 0.121 258.0);

Tailwind

colors: {
  custom: {
    50: '#7b91c4',
    500: '#3766ab',
    950: '#000000',
  },
}

SCSS

$custom: #3766ab;
$custom-light: #7b91c4;
$custom-dark: #000000;

JSON

{
  "hex": "#3766ab",
  "rgb": {
    "r": 55,
    "g": 102,
    "b": 171
  },
  "hsl": {
    "h": 215.69,
    "s": 51.327,
    "l": 44.314
  },
  "oklch": {
    "l": 0.5118,
    "c": 0.12143,
    "h": 258
  },
  "luminance": 0.13255
}

Semantic roles & 50–950 ramp

primary

#3766AB

secondary

#C1A57C

accent

#A14DDB

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #3766AB

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

Preview Lab → · Contrast checker → · Palette generator →