#3579CC#3579CC

#3579CC is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.4% C 0.145 H 255.1°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX#3579CC
RGBrgb(53, 121, 204)
HSLhsl(213, 60%, 50%)
HSVhsv(213, 74%, 80%)
CMYKcmyk(74%, 40.7%, 0%, 20%)
CIE-LABlab(50.44, 7.00, -49.17)
CIE-LCHlch(50.44, 49.67, 278.10°)
OKLaboklab(57.44% -0.0372 -0.1404)
OKLCHoklch(57.44% 0.145 255.1)
XYZxyz(19.2006, 18.7891, 59.7298)
Luminance0.1879 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3579CC #CC8835
analogous
#35C5CC #3579CC #3C35CC
triadic
#3579CC #CC3579 #79CC35
tetradic
#3579CC #CC35C5 #CC8835 #35CC3C
square
#3579CC #CC35C5 #CC8835 #35CC3C
split-complementary
#3579CC #CC3C35 #C5CC35
monochromatic
#1B3F6B #275C9C #3579CC #6699D8 #97BAE5

Accessibility & contrast

On white

4.41
#3579CC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.76
#3579CC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579CC
4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3579CC#FFFFFF#000000##000000
##3579CC1.004.414.764.76
#FFFFFF4.411.0021.0021.00
#0000004.7621.001.001.00
##0000004.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#5180CF
Deuteranopia (green-blind)
#3872CA
Tritanopia (blue-blind)
#008D98
Achromatopsia (no color)
#787878

Design tokens & code

CSS
--color: #3579cc;
/* rgb */ color: rgb(53, 121, 204);
/* oklch */ color: oklch(57.4% 0.145 255.1);
Tailwind
colors: {
  custom: {
    50: '#809fdc',
    500: '#3579cc',
    950: '#000000',
  },
}
SCSS
$custom: #3579cc;
$custom-light: #809fdc;
$custom-dark: #000000;
JSON
{
  "hex": "#3579cc",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 204
  },
  "hsl": {
    "h": 212.98,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.57437,
    "c": 0.14531,
    "h": 255.1
  },
  "luminance": 0.18791
}

Semantic roles & 50–950 ramp

primary
#3579CC
secondary
#D0B28D
accent
#9C45E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3579CC

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

Preview Lab → · Contrast checker → · Palette generator →

#3579CC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva