#3581D2#3581D2

#3581D2 is a mid, vivid cyan. Relative luminance 0.211; OKLCH L 59.6% C 0.145 H 252.7°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX#3581D2
RGBrgb(53, 129, 210)
HSLhsl(211, 64%, 52%)
HSVhsv(211, 75%, 82%)
CMYKcmyk(74.8%, 38.6%, 0%, 17.6%)
CIE-LABlab(53.07, 4.31, -48.39)
CIE-LCHlch(53.07, 48.58, 275.09°)
OKLaboklab(59.59% -0.043 -0.138)
OKLCHoklch(59.59% 0.145 252.7)
XYZxyz(20.9470, 21.1081, 63.9306)
Luminance0.2111 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3581D2 #D28635
analogous
#35D0D2 #3581D2 #3835D2
triadic
#3581D2 #D23581 #81D235
tetradic
#3581D2 #D235D0 #D28635 #35D238
square
#3581D2 #D235D0 #D28635 #35D238
split-complementary
#3581D2 #D23835 #D0D235
monochromatic
#1A4573 #2563A5 #3581D2 #67A0DD #99BFE8

Accessibility & contrast

On white

4.02
#3581D2 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.22
#3581D2 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3581D2
5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3581D2#FFFFFF#000000##000000
##3581D21.004.025.225.22
#FFFFFF4.021.0021.0021.00
#0000005.2221.001.001.00
##0000005.2221.001.001.00

Color blindness preview

Protanopia (red-blind)
#5B87D5
Deuteranopia (green-blind)
#4278D0
Tritanopia (blue-blind)
#00949F
Achromatopsia (no color)
#7F7F7F

Design tokens & code

CSS
--color: #3581d2;
/* rgb */ color: rgb(53, 129, 210);
/* oklch */ color: oklch(59.6% 0.145 252.7);
Tailwind
colors: {
  custom: {
    50: '#81a5e0',
    500: '#3581d2',
    950: '#000000',
  },
}
SCSS
$custom: #3581d2;
$custom-light: #81a5e0;
$custom-dark: #000000;
JSON
{
  "hex": "#3581d2",
  "rgb": {
    "r": 53,
    "g": 129,
    "b": 210
  },
  "hsl": {
    "h": 210.955,
    "s": 63.563,
    "l": 51.569
  },
  "oklch": {
    "l": 0.59594,
    "c": 0.14457,
    "h": 252.7
  },
  "luminance": 0.21111
}

Semantic roles & 50–950 ramp

primary
#3581D2
secondary
#D4B38F
accent
#9741E7
background
#F8FAFD
surface
#F0F4FB
border
#CBCED4
text
#0C0F15
muted
#7D7F83

Preview Lab

Preview with #3581D2

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

Preview Lab → · Contrast checker → · Palette generator →

#3581D2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva