#3769BB#3769BB

#3769BB is a mid, vivid blue. Relative luminance 0.145; OKLCH L 52.9% C 0.140 H 259.8°. Best body text is #FFFFFF at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#3769BB
RGB	rgb(55, 105, 187)
HSL	hsl(217, 55%, 47%)
HSV	hsv(217, 71%, 73%)
CMYK	cmyk(70.6%, 43.9%, 0%, 26.7%)
CIE-LAB	lab(44.94, 11.03, -48.17)
CIE-LCH	lch(44.94, 49.42, 282.90°)
OKLab	oklab(52.88% -0.0248 -0.1377)
OKLCH	oklch(52.88% 0.14 259.8)
XYZ	xyz(15.5935, 14.5016, 48.9814)
Luminance	0.1450 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3769BB #BB8937

analogous

#37ABBB #3769BB #4737BB

triadic

#3769BB #BB3769 #69BB37

tetradic

#3769BB #BB37AB #BB8937 #37BB47

square

#3769BB #BB37AB #BB8937 #37BB47

split-complementary

#3769BB #BB4737 #ABBB37

monochromatic

#1B345C #294E8C #3769BB #5F8AD0 #8EADDE

Accessibility & contrast

On white

5.38

#3769BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.90

#3769BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3769BB

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3769BB	#FFFFFF	#000000	##FFFFFF
##3769BB	1.00	5.38	3.90	5.38
#FFFFFF	5.38	1.00	21.00	1.00
#000000	3.90	21.00	1.00	21.00
##FFFFFF	5.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4171BE

Deuteranopia (green-blind)

#2965B9

Tritanopia (blue-blind)

#007C89

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3769bb;
/* rgb */ color: rgb(55, 105, 187);
/* oklch */ color: oklch(52.9% 0.140 259.8);

Tailwind

colors: {
  custom: {
    50: '#7e93d0',
    500: '#3769bb',
    950: '#000000',
  },
}

SCSS

$custom: #3769bb;
$custom-light: #7e93d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3769bb",
  "rgb": {
    "r": 55,
    "g": 105,
    "b": 187
  },
  "hsl": {
    "h": 217.273,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52877,
    "c": 0.13997,
    "h": 259.8
  },
  "luminance": 0.14503
}

Semantic roles & 50–950 ramp

primary

#3769BB

secondary

#C9AF85

accent

#A64ADE

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3769BB

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

Preview Lab → · Contrast checker → · Palette generator →