#3765B3#3765B3

#3765B3 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.5% C 0.134 H 260.3°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#3765B3
RGB	rgb(55, 101, 179)
HSL	hsl(218, 53%, 46%)
HSV	hsv(218, 69%, 70%)
CMYK	cmyk(69.3%, 43.6%, 0%, 29.8%)
CIE-LAB	lab(43.32, 10.63, -46.11)
CIE-LCH	lch(43.32, 47.32, 282.99°)
OKLab	oklab(51.47% -0.0226 -0.1317)
OKLCH	oklch(51.47% 0.134 260.3)
XYZ	xyz(14.3630, 13.3728, 44.4633)
Luminance	0.1337 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3765B3 #B38537

analogous

#37A3B3 #3765B3 #4737B3

triadic

#3765B3 #B33765 #65B337

tetradic

#3765B3 #B337A3 #B38537 #37B347

square

#3765B3 #B337A3 #B38537 #37B347

split-complementary

#3765B3 #B34737 #A3B337

monochromatic

#1A3055 #294B84 #3765B3 #5B85CD #8AA8DB

Accessibility & contrast

On white

5.71

#3765B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3765B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3765B3

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3765B3	#FFFFFF	#000000	##FFFFFF
##3765B3	1.00	5.71	3.67	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F6CB6

Deuteranopia (green-blind)

#2A61B1

Tritanopia (blue-blind)

#007783

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3765b3;
/* rgb */ color: rgb(55, 101, 179);
/* oklch */ color: oklch(51.5% 0.134 260.3);

Tailwind

colors: {
  custom: {
    50: '#7c90ca',
    500: '#3765b3',
    950: '#000000',
  },
}

SCSS

$custom: #3765b3;
$custom-light: #7c90ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3765b3",
  "rgb": {
    "r": 55,
    "g": 101,
    "b": 179
  },
  "hsl": {
    "h": 217.742,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.51468,
    "c": 0.13367,
    "h": 260.3
  },
  "luminance": 0.13374
}

Semantic roles & 50–950 ramp

primary

#3765B3

secondary

#C5AC81

accent

#A74BDC

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0C13

muted

#7C7D82

Preview Lab

Preview with #3765B3

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

Preview Lab → · Contrast checker → · Palette generator →