#3665C0#3665C0

#3665C0 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.3% C 0.152 H 262.0°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3665C0
RGB	rgb(54, 101, 192)
HSL	hsl(220, 56%, 48%)
HSV	hsv(220, 72%, 75%)
CMYK	cmyk(71.9%, 47.4%, 0%, 24.7%)
CIE-LAB	lab(44.08, 15.28, -52.45)
CIE-LCH	lch(44.08, 54.63, 286.24°)
OKLab	oklab(52.3% -0.0211 -0.1504)
OKLCH	oklch(52.3% 0.152 262)
XYZ	xyz(15.6860, 13.8957, 51.7144)
Luminance	0.1390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3665C0 #C09136

analogous

#36AAC0 #3665C0 #4C36C0

triadic

#3665C0 #C03665 #65C036

tetradic

#3665C0 #C036AA #C09136 #36C04C

square

#3665C0 #C036AA #C09136 #36C04C

split-complementary

#3665C0 #C04C36 #AAC036

monochromatic

#1B3360 #294C90 #3665C0 #6187D2 #90ACE0

Accessibility & contrast

On white

5.56

#3665C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3665C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3665C0

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3665C0	#FFFFFF	#000000	##FFFFFF
##3665C0	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#346FC3

Deuteranopia (green-blind)

#1062BE

Tritanopia (blue-blind)

#007A89

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3665c0;
/* rgb */ color: rgb(54, 101, 192);
/* oklch */ color: oklch(52.3% 0.152 262.0);

Tailwind

colors: {
  custom: {
    50: '#7e90d4',
    500: '#3665c0',
    950: '#000000',
  },
}

SCSS

$custom: #3665c0;
$custom-light: #7e90d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3665c0",
  "rgb": {
    "r": 54,
    "g": 101,
    "b": 192
  },
  "hsl": {
    "h": 219.565,
    "s": 56.098,
    "l": 48.235
  },
  "oklch": {
    "l": 0.52303,
    "c": 0.1519,
    "h": 262
  },
  "luminance": 0.13897
}

Semantic roles & 50–950 ramp

primary

#3665C0

secondary

#CBB487

accent

#AC48DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3665C0

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

Preview Lab → · Contrast checker → · Palette generator →