#3579BA#3579BA

#3579BA is a mid, vivid cyan. Relative luminance 0.180; OKLCH L 56.4% C 0.122 H 250.0°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX#3579BA
RGBrgb(53, 121, 186)
HSLhsl(209, 56%, 47%)
HSVhsv(209, 72%, 73%)
CMYKcmyk(71.5%, 34.9%, 0%, 27.1%)
CIE-LABlab(49.47, 0.44, -40.40)
CIE-LCHlch(49.47, 40.41, 270.63°)
OKLaboklab(56.36% -0.0417 -0.1148)
OKLCHoklch(56.36% 0.122 250)
XYZxyz(17.1652, 17.9749, 49.0097)
Luminance0.1798 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3579BA #BA7635
analogous
#35BAB9 #3579BA #3537BA
triadic
#3579BA #BA3579 #79BA35
tetradic
#3579BA #B935BA #BA7635 #37BA35
square
#3579BA #B935BA #BA7635 #37BA35
split-complementary
#3579BA #BA3537 #BAB935
monochromatic
#1A3B5B #275A8A #3579BA #5C97D0 #8BB6DE

Accessibility & contrast

On white

4.57
#3579BA on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.60
#3579BA on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3579BA
4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3579BA#FFFFFF#000000##000000
##3579BA1.004.574.604.60
#FFFFFF4.571.0021.0021.00
#0000004.6021.001.001.00
##0000004.6021.001.001.00

Color blindness preview

Protanopia (red-blind)
#5C7CBD
Deuteranopia (green-blind)
#4870B9
Tritanopia (blue-blind)
#008891
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #3579ba;
/* rgb */ color: rgb(53, 121, 186);
/* oklch */ color: oklch(56.4% 0.122 250.0);
Tailwind
colors: {
  custom: {
    50: '#7c9fcf',
    500: '#3579ba',
    950: '#000000',
  },
}
SCSS
$custom: #3579ba;
$custom-light: #7c9fcf;
$custom-dark: #000000;
JSON
{
  "hex": "#3579ba",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 186
  },
  "hsl": {
    "h": 209.323,
    "s": 55.649,
    "l": 46.863
  },
  "oklch": {
    "l": 0.56359,
    "c": 0.1221,
    "h": 250
  },
  "luminance": 0.17977
}

Semantic roles & 50–950 ramp

primary
#3579BA
secondary
#C8A582
accent
#9249DF
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0E14
muted
#7C7E82

Preview Lab

Preview with #3579BA

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

Preview Lab → · Contrast checker → · Palette generator →

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