#3665CA#3665CA

#3665CA is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.0% C 0.166 H 263.2°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3665CA
RGB	rgb(54, 101, 202)
HSL	hsl(221, 58%, 50%)
HSV	hsv(221, 73%, 79%)
CMYK	cmyk(73.3%, 50%, 0%, 20.8%)
CIE-LAB	lab(44.74, 18.99, -57.17)
CIE-LCH	lch(44.74, 60.24, 288.37°)
OKLab	oklab(53.01% -0.0197 -0.1643)
OKLCH	oklch(53.01% 0.166 263.2)
XYZ	xyz(16.8319, 14.3541, 57.7492)
Luminance	0.1436 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665CA #CA9B36

analogous

#36AFCA #3665CA #5136CA

triadic

#3665CA #CA3665 #65CA36

tetradic

#3665CA #CA36AF #CA9B36 #36CA51

square

#3665CA #CA36AF #CA9B36 #36CA51

split-complementary

#3665CA #CA5136 #AFCA36

monochromatic

#1C356A #294D9A #3665CA #668AD7 #97AFE4

Accessibility & contrast

On white

5.42

#3665CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3665CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665CA

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665CA	#FFFFFF	#000000	##FFFFFF
##3665CA	1.00	5.42	3.87	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2871CE

Deuteranopia (green-blind)

#0063C8

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3665ca;
/* rgb */ color: rgb(54, 101, 202);
/* oklch */ color: oklch(53.0% 0.166 263.2);

Tailwind

colors: {
  custom: {
    50: '#8090db',
    500: '#3665ca',
    950: '#000000',
  },
}

SCSS

$custom: #3665ca;
$custom-light: #8090db;
$custom-dark: #000000;

JSON

{
  "hex": "#3665ca",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 202
  },
  "hsl": {
    "h": 220.946,
    "s": 58.268,
    "l": 50.196
  },
  "oklch": {
    "l": 0.53012,
    "c": 0.1655,
    "h": 263.2
  },
  "luminance": 0.14356
}

Semantic roles & 50–950 ramp

primary

#3665CA

secondary

#CFBA8D

accent

#B046E1

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3665CA

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

Preview Lab → · Contrast checker → · Palette generator →