#378EA1#378EA1

#378EA1 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.3% C 0.086 H 214.8°. Best body text is #000000 at 5.55:1 contrast (WCAG AA passes).

Color values

HEX#378EA1
RGBrgb(55, 142, 161)
HSLhsl(191, 49%, 42%)
HSVhsv(191, 66%, 63%)
CMYKcmyk(65.8%, 11.8%, 0%, 36.9%)
CIE-LABlab(54.79, -19.73, -17.72)
CIE-LCHlch(54.79, 26.52, 221.93°)
OKLaboklab(60.25% -0.071 -0.0493)
OKLCHoklch(60.25% 0.086 214.8)
XYZxyz(17.6789, 22.7295, 37.1668)
Luminance0.2273 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378EA1 #A14A37
analogous
#37A17F #378EA1 #3759A1
triadic
#378EA1 #A1378E #8EA137
tetradic
#378EA1 #7F37A1 #A14A37 #59A137
square
#378EA1 #7F37A1 #A14A37 #59A137
split-complementary
#378EA1 #A13759 #A17F37
monochromatic
#183E46 #276673 #378EA1 #51AFC4 #7FC4D3

Accessibility & contrast

On white

3.79
#378EA1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.55
#378EA1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EA1
5.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378EA1#FFFFFF#000000##000000
##378EA11.003.795.555.55
#FFFFFF3.791.0021.0021.00
#0000005.5521.001.001.00
##0000005.5521.001.001.00

Color blindness preview

Protanopia (red-blind)
#808AA2
Deuteranopia (green-blind)
#717EA1
Tritanopia (blue-blind)
#009594
Achromatopsia (no color)
#838383

Design tokens & code

CSS
--color: #378ea1;
/* rgb */ color: rgb(55, 142, 161);
/* oklch */ color: oklch(60.3% 0.086 214.8);
Tailwind
colors: {
  custom: {
    50: '#7bafbc',
    500: '#378ea1',
    950: '#000000',
  },
}
SCSS
$custom: #378ea1;
$custom-light: #7bafbc;
$custom-dark: #000000;
JSON
{
  "hex": "#378ea1",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 161
  },
  "hsl": {
    "h": 190.755,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.6025,
    "c": 0.08638,
    "h": 214.8
  },
  "luminance": 0.22731
}

Semantic roles & 50–950 ramp

primary
#378EA1
secondary
#BD8477
accent
#684FD9
background
#F7FAFB
surface
#EEF4F6
border
#C9CED0
text
#0A1012
muted
#7C7F81

Preview Lab

Preview with #378EA1

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

Preview Lab → · Contrast checker → · Palette generator →

#378EA1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva