#3765B7#3765B7

#3765B7 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 51.7% C 0.139 H 261.0°. Best body text is #FFFFFF at 5.66:1 contrast (WCAG AA passes).

Color values

HEX	#3765B7
RGB	rgb(55, 101, 183)
HSL	hsl(218, 54%, 47%)
HSV	hsv(218, 70%, 72%)
CMYK	cmyk(69.9%, 44.8%, 0%, 28.2%)
CIE-LAB	lab(43.56, 12.10, -48.05)
CIE-LCH	lch(43.56, 49.56, 284.14°)
OKLab	oklab(51.73% -0.0218 -0.1375)
OKLCH	oklch(51.73% 0.139 261)
XYZ	xyz(14.7734, 13.5370, 46.6249)
Luminance	0.1354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3765B7 #B78937

analogous

#37A5B7 #3765B7 #4937B7

triadic

#3765B7 #B73765 #65B737

tetradic

#3765B7 #B737A5 #B78937 #37B749

square

#3765B7 #B737A5 #B78937 #37B749

split-complementary

#3765B7 #B74937 #A5B737

monochromatic

#1B3159 #294B88 #3765B7 #5D86CE #8CA9DC

Accessibility & contrast

On white

5.66

#3765B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.71

#3765B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3765B7

5.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3765B7	#FFFFFF	#000000	##FFFFFF
##3765B7	1.00	5.66	3.71	5.66
#FFFFFF	5.66	1.00	21.00	1.00
#000000	3.71	21.00	1.00	21.00
##FFFFFF	5.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C6DBA

Deuteranopia (green-blind)

#2561B5

Tritanopia (blue-blind)

#007885

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3765b7;
/* rgb */ color: rgb(55, 101, 183);
/* oklch */ color: oklch(51.7% 0.139 261.0);

Tailwind

colors: {
  custom: {
    50: '#7d90cd',
    500: '#3765b7',
    950: '#000000',
  },
}

SCSS

$custom: #3765b7;
$custom-light: #7d90cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3765b7",
  "rgb": {
    "r": 55,
    "g": 101,
    "b": 183
  },
  "hsl": {
    "h": 218.438,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.51732,
    "c": 0.1392,
    "h": 261
  },
  "luminance": 0.13538
}

Semantic roles & 50–950 ramp

primary

#3765B7

secondary

#C7AE83

accent

#A94BDD

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3765B7

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

Preview Lab → · Contrast checker → · Palette generator →