#3765B9#3765B9

#3765B9 is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.9% C 0.142 H 261.3°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#3765B9
RGB	rgb(55, 101, 185)
HSL	hsl(219, 54%, 47%)
HSV	hsv(219, 70%, 73%)
CMYK	cmyk(70.3%, 45.4%, 0%, 27.5%)
CIE-LAB	lab(43.68, 12.84, -49.02)
CIE-LCH	lch(43.68, 50.68, 284.68°)
OKLab	oklab(51.87% -0.0215 -0.1403)
OKLCH	oklch(51.87% 0.142 261.3)
XYZ	xyz(14.9831, 13.6208, 47.7290)
Luminance	0.1362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3765B9 #B98B37

analogous

#37A6B9 #3765B9 #4A37B9

triadic

#3765B9 #B93765 #65B937

tetradic

#3765B9 #B937A6 #B98B37 #37B94A

square

#3765B9 #B937A6 #B98B37 #37B94A

split-complementary

#3765B9 #B94A37 #A6B937

monochromatic

#1B315B #294B8A #3765B9 #5E86CF #8DAADD

Accessibility & contrast

On white

5.64

#3765B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#3765B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3765B9

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3765B9	#FFFFFF	#000000	##FFFFFF
##3765B9	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B6EBC

Deuteranopia (green-blind)

#2162B7

Tritanopia (blue-blind)

#007986

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3765b9;
/* rgb */ color: rgb(55, 101, 185);
/* oklch */ color: oklch(51.9% 0.142 261.3);

Tailwind

colors: {
  custom: {
    50: '#7d90ce',
    500: '#3765b9',
    950: '#000000',
  },
}

SCSS

$custom: #3765b9;
$custom-light: #7d90ce;
$custom-dark: #000000;

JSON

{
  "hex": "#3765b9",
  "rgb": {
    "r": 55,
    "g": 101,
    "b": 185
  },
  "hsl": {
    "h": 218.769,
    "s": 54.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.51866,
    "c": 0.14196,
    "h": 261.3
  },
  "luminance": 0.13622
}

Semantic roles & 50–950 ramp

primary

#3765B9

secondary

#C8B084

accent

#A94ADE

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3765B9

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

Preview Lab → · Contrast checker → · Palette generator →