#278CB2#278CB2

#278CB2 is a mid, moderate cyan. Relative luminance 0.224; OKLCH L 60.1% C 0.105 H 228.3°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX#278CB2
RGBrgb(39, 140, 178)
HSLhsl(196, 64%, 43%)
HSVhsv(196, 78%, 70%)
CMYKcmyk(78.1%, 21.3%, 0%, 30.2%)
CIE-LABlab(54.45, -15.22, -28.03)
CIE-LCHlch(54.45, 31.90, 241.51°)
OKLaboklab(60.08% -0.0701 -0.0788)
OKLCHoklch(60.08% 0.105 228.3)
XYZxyz(18.2474, 22.3996, 45.4727)
Luminance0.2240 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#278CB2 #B24D27
analogous
#27B293 #278CB2 #2746B2
triadic
#278CB2 #B2278C #8CB227
tetradic
#278CB2 #9327B2 #B24D27 #46B227
square
#278CB2 #9327B2 #B24D27 #46B227
split-complementary
#278CB2 #B22746 #B29327
monochromatic
#113D4E #1C6580 #278CB2 #41ADD5 #73C2E0

Accessibility & contrast

On white

3.83
#278CB2 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.48
#278CB2 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278CB2
5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##278CB2#FFFFFF#000000##000000
##278CB21.003.835.485.48
#FFFFFF3.831.0021.0021.00
#0000005.4821.001.001.00
##0000005.4821.001.001.00

Color blindness preview

Protanopia (red-blind)
#788AB4
Deuteranopia (green-blind)
#667CB1
Tritanopia (blue-blind)
#009799
Achromatopsia (no color)
#828282

Design tokens & code

CSS
--color: #278cb2;
/* rgb */ color: rgb(39, 140, 178);
/* oklch */ color: oklch(60.1% 0.105 228.3);
Tailwind
colors: {
  custom: {
    50: '#77adc9',
    500: '#278cb2',
    950: '#000000',
  },
}
SCSS
$custom: #278cb2;
$custom-light: #77adc9;
$custom-dark: #000000;
JSON
{
  "hex": "#278cb2",
  "rgb": {
    "r": 39,
    "g": 140,
    "b": 178
  },
  "hsl": {
    "h": 196.403,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.60082,
    "c": 0.10543,
    "h": 228.3
  },
  "luminance": 0.22402
}

Semantic roles & 50–950 ramp

primary
#278CB2
secondary
#C8866D
accent
#6E41E7
background
#F7FAFC
surface
#EEF4F8
border
#C9CED1
text
#0A1013
muted
#7C7F82

Preview Lab

Preview with #278CB2

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

Preview Lab → · Contrast checker → · Palette generator →

#278CB2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva