#3779CB#3779CB

#3779CB is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.4% C 0.143 H 255.4°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX#3779CB
RGBrgb(55, 121, 203)
HSLhsl(213, 59%, 51%)
HSVhsv(213, 73%, 80%)
CMYKcmyk(72.9%, 40.4%, 0%, 20.4%)
CIE-LABlab(50.45, 6.90, -48.58)
CIE-LCHlch(50.45, 49.07, 278.08°)
OKLaboklab(57.44% -0.0362 -0.1387)
OKLCHoklch(57.44% 0.143 255.4)
XYZxyz(19.1884, 18.7966, 59.1052)
Luminance0.1880 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3779CB #CB8937
analogous
#37C3CB #3779CB #3F37CB
triadic
#3779CB #CB3779 #79CB37
tetradic
#3779CB #CB37C3 #CB8937 #37CB3F
square
#3779CB #CB37C3 #CB8937 #37CB3F
split-complementary
#3779CB #CB3F37 #C3CB37
monochromatic
#1C3F6C #295C9C #3779CB #689AD8 #98BAE4

Accessibility & contrast

On white

4.41
#3779CB on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.76
#3779CB on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3779CB
4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3779CB#FFFFFF#000000##000000
##3779CB1.004.414.764.76
#FFFFFF4.411.0021.0021.00
#0000004.7621.001.001.00
##0000004.7621.001.001.00

Color blindness preview

Protanopia (red-blind)
#527FCE
Deuteranopia (green-blind)
#3A72C9
Tritanopia (blue-blind)
#008C98
Achromatopsia (no color)
#787878

Design tokens & code

CSS
--color: #3779cb;
/* rgb */ color: rgb(55, 121, 203);
/* oklch */ color: oklch(57.4% 0.143 255.4);
Tailwind
colors: {
  custom: {
    50: '#809fdb',
    500: '#3779cb',
    950: '#000000',
  },
}
SCSS
$custom: #3779cb;
$custom-light: #809fdb;
$custom-dark: #000000;
JSON
{
  "hex": "#3779cb",
  "rgb": {
    "r": 55,
    "g": 121,
    "b": 203
  },
  "hsl": {
    "h": 213.243,
    "s": 58.73,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57444,
    "c": 0.14334,
    "h": 255.4
  },
  "luminance": 0.18799
}

Semantic roles & 50–950 ramp

primary
#3779CB
secondary
#D0B28E
accent
#9C46E2
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3779CB

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

Preview Lab → · Contrast checker → · Palette generator →

#3779CB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva