#3765BB#3765BB

#3765BB is a mid, vivid blue. Relative luminance 0.137; OKLCH L 52.0% C 0.145 H 261.6°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#3765BB
RGB	rgb(55, 101, 187)
HSL	hsl(219, 55%, 47%)
HSV	hsv(219, 71%, 73%)
CMYK	cmyk(70.6%, 46%, 0%, 26.7%)
CIE-LAB	lab(43.81, 13.58, -49.99)
CIE-LCH	lch(43.81, 51.80, 285.20°)
OKLab	oklab(52% -0.0211 -0.1432)
OKLCH	oklch(52% 0.145 261.6)
XYZ	xyz(15.1957, 13.7059, 48.8487)
Luminance	0.1371 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3765BB #BB8D37

analogous

#37A7BB #3765BB #4B37BB

triadic

#3765BB #BB3765 #65BB37

tetradic

#3765BB #BB37A7 #BB8D37 #37BB4B

square

#3765BB #BB37A7 #BB8D37 #37BB4B

split-complementary

#3765BB #BB4B37 #A7BB37

monochromatic

#1B325C #294B8C #3765BB #5F87D0 #8EAADE

Accessibility & contrast

On white

5.61

#3765BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#3765BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3765BB

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3765BB	#FFFFFF	#000000	##FFFFFF
##3765BB	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396EBE

Deuteranopia (green-blind)

#1E62B9

Tritanopia (blue-blind)

#007987

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3765bb;
/* rgb */ color: rgb(55, 101, 187);
/* oklch */ color: oklch(52.0% 0.145 261.6);

Tailwind

colors: {
  custom: {
    50: '#7e90d0',
    500: '#3765bb',
    950: '#000000',
  },
}

SCSS

$custom: #3765bb;
$custom-light: #7e90d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3765bb",
  "rgb": {
    "r": 55,
    "g": 101,
    "b": 187
  },
  "hsl": {
    "h": 219.091,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52002,
    "c": 0.14471,
    "h": 261.6
  },
  "luminance": 0.13707
}

Semantic roles & 50–950 ramp

primary

#3765BB

secondary

#C9B185

accent

#AA4ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3765BB

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

Preview Lab → · Contrast checker → · Palette generator →