#3565CB#3565CB

#3565CB is a mid, vivid blue. Relative luminance 0.144; OKLCH L 53.0% C 0.167 H 263.0°. Best body text is #FFFFFF at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#3565CB
RGB	rgb(53, 101, 203)
HSL	hsl(221, 59%, 50%)
HSV	hsv(221, 74%, 80%)
CMYK	cmyk(73.9%, 50.2%, 0%, 20.4%)
CIE-LAB	lab(44.76, 19.23, -57.71)
CIE-LCH	lch(44.76, 60.82, 288.43°)
OKLab	oklab(53.04% -0.0204 -0.1659)
OKLCH	oklch(53.04% 0.167 263)
XYZ	xyz(16.8975, 14.3742, 58.3723)
Luminance	0.1438 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3565CB #CB9B35

analogous

#35B0CB #3565CB #5035CB

triadic

#3565CB #CB3565 #65CB35

tetradic

#3565CB #CB35B0 #CB9B35 #35CB50

square

#3565CB #CB35B0 #CB9B35 #35CB50

split-complementary

#3565CB #CB5035 #B0CB35

monochromatic

#1B356A #284D9B #3565CB #668AD8 #96AFE4

Accessibility & contrast

On white

5.42

#3565CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.88

#3565CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3565CB

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3565CB	#FFFFFF	#000000	##FFFFFF
##3565CB	1.00	5.42	3.88	5.42
#FFFFFF	5.42	1.00	21.00	1.00
#000000	3.88	21.00	1.00	21.00
##FFFFFF	5.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2771CF

Deuteranopia (green-blind)

#0063C9

Tritanopia (blue-blind)

#007D8E

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3565cb;
/* rgb */ color: rgb(53, 101, 203);
/* oklch */ color: oklch(53.0% 0.167 263.0);

Tailwind

colors: {
  custom: {
    50: '#8090db',
    500: '#3565cb',
    950: '#000000',
  },
}

SCSS

$custom: #3565cb;
$custom-light: #8090db;
$custom-dark: #000000;

JSON

{
  "hex": "#3565cb",
  "rgb": {
    "r": 53,
    "g": 101,
    "b": 203
  },
  "hsl": {
    "h": 220.8,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.53044,
    "c": 0.16714,
    "h": 263
  },
  "luminance": 0.14376
}

Semantic roles & 50–950 ramp

primary

#3565CB

secondary

#CFBA8C

accent

#B046E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3565CB

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

Preview Lab → · Contrast checker → · Palette generator →