#3765CB#3765CB

#3765CB is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.1% C 0.167 H 263.5°. Best body text is #FFFFFF at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#3765CB
RGB	rgb(55, 101, 203)
HSL	hsl(221, 59%, 51%)
HSV	hsv(221, 73%, 80%)
CMYK	cmyk(72.9%, 50.2%, 0%, 20.4%)
CIE-LAB	lab(44.84, 19.49, -57.58)
CIE-LCH	lch(44.84, 60.78, 288.70°)
OKLab	oklab(53.13% -0.0188 -0.1655)
OKLCH	oklch(53.13% 0.167 263.5)
XYZ	xyz(17.0049, 14.4295, 58.3773)
Luminance	0.1443 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3765CB #CB9D37

analogous

#37AFCB #3765CB #5337CB

triadic

#3765CB #CB3765 #65CB37

tetradic

#3765CB #CB37AF #CB9D37 #37CB53

square

#3765CB #CB37AF #CB9D37 #37CB53

split-complementary

#3765CB #CB5337 #AFCB37

monochromatic

#1C356C #294D9C #3765CB #688AD8 #98B0E4

Accessibility & contrast

On white

5.40

#3765CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.89

#3765CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3765CB

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3765CB	#FFFFFF	#000000	##FFFFFF
##3765CB	1.00	5.40	3.89	5.40
#FFFFFF	5.40	1.00	21.00	1.00
#000000	3.89	21.00	1.00	21.00
##FFFFFF	5.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2771CF

Deuteranopia (green-blind)

#0064C9

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3765cb;
/* rgb */ color: rgb(55, 101, 203);
/* oklch */ color: oklch(53.1% 0.167 263.5);

Tailwind

colors: {
  custom: {
    50: '#8190db',
    500: '#3765cb',
    950: '#000000',
  },
}

SCSS

$custom: #3765cb;
$custom-light: #8190db;
$custom-dark: #000000;

JSON

{
  "hex": "#3765cb",
  "rgb": {
    "r": 55,
    "g": 101,
    "b": 203
  },
  "hsl": {
    "h": 221.351,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.53125,
    "c": 0.16655,
    "h": 263.5
  },
  "luminance": 0.14431
}

Semantic roles & 50–950 ramp

primary

#3765CB

secondary

#D0BB8E

accent

#B146E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3765CB

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

Preview Lab → · Contrast checker → · Palette generator →