#3573CC#3573CC

#3573CC is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.1% C 0.152 H 257.9°. Best body text is #FFFFFF at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3573CC
RGB	rgb(53, 115, 204)
HSL	hsl(215, 60%, 50%)
HSV	hsv(215, 74%, 80%)
CMYK	cmyk(74%, 43.6%, 0%, 20%)
CIE-LAB	lab(48.73, 10.73, -51.90)
CIE-LCH	lch(48.73, 53.00, 281.68°)
OKLab	oklab(56.11% -0.032 -0.1486)
OKLCH	oklch(56.11% 0.152 257.9)
XYZ	xyz(18.4940, 17.3759, 59.4942)
Luminance	0.1738 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3573CC #CC8E35

analogous

#35BFCC #3573CC #4235CC

triadic

#3573CC #CC3573 #73CC35

tetradic

#3573CC #CC35BF #CC8E35 #35CC42

square

#3573CC #CC35BF #CC8E35 #35CC42

split-complementary

#3573CC #CC4235 #BFCC35

monochromatic

#1B3C6B #27579C #3573CC #6695D8 #97B7E5

Accessibility & contrast

On white

4.69

#3573CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.48

#3573CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3573CC

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3573CC	#FFFFFF	#000000	##FFFFFF
##3573CC	1.00	4.69	4.48	4.69
#FFFFFF	4.69	1.00	21.00	1.00
#000000	4.48	21.00	1.00	21.00
##FFFFFF	4.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477BCF

Deuteranopia (green-blind)

#2A6DCA

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3573cc;
/* rgb */ color: rgb(53, 115, 204);
/* oklch */ color: oklch(56.1% 0.152 257.9);

Tailwind

colors: {
  custom: {
    50: '#809adc',
    500: '#3573cc',
    950: '#000000',
  },
}

SCSS

$custom: #3573cc;
$custom-light: #809adc;
$custom-dark: #000000;

JSON

{
  "hex": "#3573cc",
  "rgb": {
    "r": 53,
    "g": 115,
    "b": 204
  },
  "hsl": {
    "h": 215.364,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.56111,
    "c": 0.15198,
    "h": 257.9
  },
  "luminance": 0.17378
}

Semantic roles & 50–950 ramp

primary

#3573CC

secondary

#D0B48D

accent

#A245E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3573CC

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

Preview Lab → · Contrast checker → · Palette generator →