#3571CF#3571CF

#3571CF is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.158 H 259.2°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3571CF
RGB	rgb(53, 113, 207)
HSL	hsl(217, 62%, 51%)
HSV	hsv(217, 74%, 81%)
CMYK	cmyk(74.4%, 45.4%, 0%, 18.8%)
CIE-LAB	lab(48.35, 13.09, -54.23)
CIE-LCH	lch(48.35, 55.79, 283.57°)
OKLab	oklab(55.88% -0.0297 -0.1554)
OKLCH	oklch(55.88% 0.158 259.2)
XYZ	xyz(18.6317, 17.0700, 61.3323)
Luminance	0.1707 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3571CF #CF9335

analogous

#35BECF #3571CF #4635CF

triadic

#3571CF #CF3571 #71CF35

tetradic

#3571CF #CF35BE #CF9335 #35CF46

square

#3571CF #CF35BE #CF9335 #35CF46

split-complementary

#3571CF #CF4635 #BECF35

monochromatic

#1A3B6F #2656A1 #3571CF #6694DB #98B7E7

Accessibility & contrast

On white

4.76

#3571CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#3571CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3571CF

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3571CF	#FFFFFF	#000000	##FFFFFF
##3571CF	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#407AD3

Deuteranopia (green-blind)

#1E6CCD

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3571cf;
/* rgb */ color: rgb(53, 113, 207);
/* oklch */ color: oklch(55.9% 0.158 259.2);

Tailwind

colors: {
  custom: {
    50: '#8199de',
    500: '#3571cf',
    950: '#000000',
  },
}

SCSS

$custom: #3571cf;
$custom-light: #8199de;
$custom-dark: #000000;

JSON

{
  "hex": "#3571cf",
  "rgb": {
    "r": 53,
    "g": 113,
    "b": 207
  },
  "hsl": {
    "h": 216.623,
    "s": 61.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.55875,
    "c": 0.15826,
    "h": 259.2
  },
  "luminance": 0.17072
}

Semantic roles & 50–950 ramp

primary

#3571CF

secondary

#D2B78E

accent

#A643E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3571CF

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

Preview Lab → · Contrast checker → · Palette generator →