#3579B1#3579B1

#3579B1 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 55.9% C 0.111 H 246.5°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX#3579B1
RGBrgb(53, 121, 177)
HSLhsl(207, 54%, 45%)
HSVhsv(207, 70%, 69%)
CMYKcmyk(70.1%, 31.6%, 0%, 30.6%)
CIE-LABlab(49.01, -2.78, -35.92)
CIE-LCHlch(49.01, 36.02, 265.57°)
OKLaboklab(55.86% -0.0443 -0.1017)
OKLCHoklch(55.86% 0.111 246.5)
XYZxyz(16.2384, 17.6042, 44.1286)
Luminance0.1761 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3579B1 #B16D35
analogous
#35B1AB #3579B1 #353BB1
triadic
#3579B1 #B13579 #79B135
tetradic
#3579B1 #AB35B1 #B16D35 #3BB135
square
#3579B1 #AB35B1 #B16D35 #3BB135
split-complementary
#3579B1 #B1353B #B1AB35
monochromatic
#193953 #275982 #3579B1 #5797CD #86B4DB

Accessibility & contrast

On white

4.64
#3579B1 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.52
#3579B1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3579B1
4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3579B1#FFFFFF#000000##FFFFFF
##3579B11.004.644.524.64
#FFFFFF4.641.0021.001.00
#0000004.5221.001.0021.00
##FFFFFF4.641.0021.001.00

Color blindness preview

Protanopia (red-blind)
#607BB3
Deuteranopia (green-blind)
#4F6FB0
Tritanopia (blue-blind)
#00868D
Achromatopsia (no color)
#747474

Design tokens & code

CSS
--color: #3579b1;
/* rgb */ color: rgb(53, 121, 177);
/* oklch */ color: oklch(55.9% 0.111 246.5);
Tailwind
colors: {
  custom: {
    50: '#7b9fc8',
    500: '#3579b1',
    950: '#000000',
  },
}
SCSS
$custom: #3579b1;
$custom-light: #7b9fc8;
$custom-dark: #000000;
JSON
{
  "hex": "#3579b1",
  "rgb": {
    "r": 53,
    "g": 121,
    "b": 177
  },
  "hsl": {
    "h": 207.097,
    "s": 53.913,
    "l": 45.098
  },
  "oklch": {
    "l": 0.55855,
    "c": 0.11089,
    "h": 246.5
  },
  "luminance": 0.17606
}

Semantic roles & 50–950 ramp

primary
#3579B1
secondary
#C49D7D
accent
#8D4BDD
background
#F8F9FC
surface
#EFF2F8
border
#CACCD1
text
#0A0E13
muted
#7C7E82

Preview Lab

Preview with #3579B1

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

Preview Lab → · Contrast checker → · Palette generator →

#3579B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva