#3577C9#3577C9

#3577C9 is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.8% C 0.144 H 255.4°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX#3577C9
RGBrgb(53, 119, 201)
HSLhsl(213, 58%, 50%)
HSVhsv(213, 74%, 79%)
CMYKcmyk(73.6%, 40.8%, 0%, 21.2%)
CIE-LABlab(49.70, 7.13, -48.64)
CIE-LCHlch(49.70, 49.16, 278.34°)
OKLaboklab(56.8% -0.0361 -0.1389)
OKLCHoklch(56.8% 0.144 255.4)
XYZxyz(18.6037, 18.1655, 57.7728)
Luminance0.1817 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3577C9 #C98735
analogous
#35C1C9 #3577C9 #3D35C9
triadic
#3577C9 #C93577 #77C935
tetradic
#3577C9 #C935C1 #C98735 #35C93D
square
#3577C9 #C935C1 #C98735 #35C93D
split-complementary
#3577C9 #C93D35 #C1C935
monochromatic
#1B3E68 #285A99 #3577C9 #6597D6 #95B8E3

Accessibility & contrast

On white

4.53
#3577C9 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.63
#3577C9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3577C9
4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3577C9#FFFFFF#000000##000000
##3577C91.004.534.634.63
#FFFFFF4.531.0021.0021.00
#0000004.6321.001.001.00
##0000004.6321.001.001.00

Color blindness preview

Protanopia (red-blind)
#507ECC
Deuteranopia (green-blind)
#3770C7
Tritanopia (blue-blind)
#008A96
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #3577c9;
/* rgb */ color: rgb(53, 119, 201);
/* oklch */ color: oklch(56.8% 0.144 255.4);
Tailwind
colors: {
  custom: {
    50: '#7f9dda',
    500: '#3577c9',
    950: '#000000',
  },
}
SCSS
$custom: #3577c9;
$custom-light: #7f9dda;
$custom-dark: #000000;
JSON
{
  "hex": "#3577c9",
  "rgb": {
    "r": 53,
    "g": 119,
    "b": 201
  },
  "hsl": {
    "h": 213.243,
    "s": 58.268,
    "l": 49.804
  },
  "oklch": {
    "l": 0.56804,
    "c": 0.14356,
    "h": 255.4
  },
  "luminance": 0.18168
}

Semantic roles & 50–950 ramp

primary
#3577C9
secondary
#CEB18B
accent
#9C46E1
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0B0E15
muted
#7C7E83

Preview Lab

Preview with #3577C9

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

Preview Lab → · Contrast checker → · Palette generator →

#3577C9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva