#3778C0#3778C0

#3778C0 is a mid, vivid cyan. Relative luminance 0.181; OKLCH L 56.6% C 0.130 H 253.1°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX#3778C0
RGBrgb(55, 120, 192)
HSLhsl(212, 55%, 48%)
HSVhsv(212, 71%, 75%)
CMYKcmyk(71.4%, 37.5%, 0%, 24.7%)
CIE-LABlab(49.56, 3.51, -43.71)
CIE-LCHlch(49.56, 43.85, 274.60°)
OKLaboklab(56.55% -0.0378 -0.1244)
OKLCHoklch(56.55% 0.13 253.1)
XYZxyz(17.8029, 18.0490, 52.4045)
Luminance0.1805 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3778C0 #C07F37
analogous
#37BCC0 #3778C0 #3A37C0
triadic
#3778C0 #C03778 #78C037
tetradic
#3778C0 #C037BC #C07F37 #37C03A
square
#3778C0 #C037BC #C07F37 #37C03A
split-complementary
#3778C0 #C03A37 #BCC037
monochromatic
#1C3D61 #295A90 #3778C0 #6297D2 #92B7E0

Accessibility & contrast

On white

4.56
#3778C0 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.61
#3778C0 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3778C0
4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3778C0#FFFFFF#000000##000000
##3778C01.004.564.614.61
#FFFFFF4.561.0021.0021.00
#0000004.6121.001.001.00
##0000004.6121.001.001.00

Color blindness preview

Protanopia (red-blind)
#577DC3
Deuteranopia (green-blind)
#4370BF
Tritanopia (blue-blind)
#008993
Achromatopsia (no color)
#767676

Design tokens & code

CSS
--color: #3778c0;
/* rgb */ color: rgb(55, 120, 192);
/* oklch */ color: oklch(56.6% 0.130 253.1);
Tailwind
colors: {
  custom: {
    50: '#7e9ed3',
    500: '#3778c0',
    950: '#000000',
  },
}
SCSS
$custom: #3778c0;
$custom-light: #7e9ed3;
$custom-dark: #000000;
JSON
{
  "hex": "#3778c0",
  "rgb": {
    "r": 55,
    "g": 120,
    "b": 192
  },
  "hsl": {
    "h": 211.533,
    "s": 55.466,
    "l": 48.431
  },
  "oklch": {
    "l": 0.56552,
    "c": 0.13005,
    "h": 253.1
  },
  "luminance": 0.18051
}

Semantic roles & 50–950 ramp

primary
#3778C0
secondary
#CBAB88
accent
#9849DF
background
#F8F9FD
surface
#EFF2FA
border
#CACCD3
text
#0B0E14
muted
#7C7E83

Preview Lab

Preview with #3778C0

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

Preview Lab → · Contrast checker → · Palette generator →

#3778C0 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva