#378EC3#378EC3

#378EC3 is a mid, moderate cyan. Relative luminance 0.241; OKLCH L 61.8% C 0.115 H 239.4°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX#378EC3
RGBrgb(55, 142, 195)
HSLhsl(203, 56%, 49%)
HSVhsv(203, 72%, 76%)
CMYKcmyk(71.8%, 27.2%, 0%, 23.5%)
CIE-LABlab(56.18, -8.41, -34.98)
CIE-LCHlch(56.18, 35.98, 256.48°)
OKLaboklab(61.82% -0.0583 -0.0987)
OKLCHoklch(61.82% 0.115 239.4)
XYZxyz(21.0950, 24.0960, 55.1584)
Luminance0.2410 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#378EC3 #C36C37
analogous
#37C3B2 #378EC3 #3748C3
triadic
#378EC3 #C3378E #8EC337
tetradic
#378EC3 #B237C3 #C36C37 #48C337
square
#378EC3 #B237C3 #C36C37 #48C337
split-complementary
#378EC3 #C33748 #C3B237
monochromatic
#1C4864 #2A6B93 #378EC3 #64A9D3 #94C4E1

Accessibility & contrast

On white

3.61
#378EC3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.82
#378EC3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #378EC3
5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##378EC3#FFFFFF#000000##000000
##378EC31.003.615.825.82
#FFFFFF3.611.0021.0021.00
#0000005.8221.001.001.00
##0000005.8221.001.001.00

Color blindness preview

Protanopia (red-blind)
#758EC5
Deuteranopia (green-blind)
#6281C2
Tritanopia (blue-blind)
#009BA0
Achromatopsia (no color)
#878787

Design tokens & code

CSS
--color: #378ec3;
/* rgb */ color: rgb(55, 142, 195);
/* oklch */ color: oklch(61.8% 0.115 239.4);
Tailwind
colors: {
  custom: {
    50: '#7faed5',
    500: '#378ec3',
    950: '#000000',
  },
}
SCSS
$custom: #378ec3;
$custom-light: #7faed5;
$custom-dark: #000000;
JSON
{
  "hex": "#378ec3",
  "rgb": {
    "r": 55,
    "g": 142,
    "b": 195
  },
  "hsl": {
    "h": 202.714,
    "s": 56,
    "l": 49.02
  },
  "oklch": {
    "l": 0.6182,
    "c": 0.11465,
    "h": 239.4
  },
  "luminance": 0.24098
}

Semantic roles & 50–950 ramp

primary
#378EC3
secondary
#CCA38A
accent
#8249DF
background
#F8FAFD
surface
#F0F4FA
border
#CBCED3
text
#0B1014
muted
#7C7F83

Preview Lab

Preview with #378EC3

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

Preview Lab → · Contrast checker → · Palette generator →

#378EC3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva