#278DA4#278DA4

#278DA4 is a mid, moderate cyan. Relative luminance 0.222; OKLCH L 59.7% C 0.095 H 216.6°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX#278DA4
RGBrgb(39, 141, 164)
HSLhsl(191, 62%, 40%)
HSVhsv(191, 76%, 64%)
CMYKcmyk(76.2%, 14%, 0%, 35.7%)
CIE-LABlab(54.20, -20.53, -20.39)
CIE-LCHlch(54.20, 28.93, 224.81°)
OKLaboklab(59.69% -0.0766 -0.0569)
OKLCHoklch(59.69% 0.095 216.6)
XYZxyz(17.0596, 22.1594, 38.4928)
Luminance0.2216 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#278DA4 #A43E27
analogous
#27A47D #278DA4 #274FA4
triadic
#278DA4 #A4278D #8DA427
tetradic
#278DA4 #7D27A4 #A43E27 #4FA427
square
#278DA4 #7D27A4 #A43E27 #4FA427
split-complementary
#278DA4 #A4274F #A47D27
monochromatic
#0F3841 #1B6273 #278DA4 #38B4D0 #6AC7DC

Accessibility & contrast

On white

3.87
#278DA4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.43
#278DA4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278DA4
5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##278DA4#FFFFFF#000000##000000
##278DA41.003.875.435.43
#FFFFFF3.871.0021.0021.00
#0000005.4321.001.001.00
##0000005.4321.001.001.00

Color blindness preview

Protanopia (red-blind)
#7E89A5
Deuteranopia (green-blind)
#6D7CA4
Tritanopia (blue-blind)
#009594
Achromatopsia (no color)
#828282

Design tokens & code

CSS
--color: #278da4;
/* rgb */ color: rgb(39, 141, 164);
/* oklch */ color: oklch(59.7% 0.095 216.6);
Tailwind
colors: {
  custom: {
    50: '#75aebf',
    500: '#278da4',
    950: '#000000',
  },
}
SCSS
$custom: #278da4;
$custom-light: #75aebf;
$custom-dark: #000000;
JSON
{
  "hex": "#278da4",
  "rgb": {
    "r": 39,
    "g": 141,
    "b": 164
  },
  "hsl": {
    "h": 191.04,
    "s": 61.576,
    "l": 39.804
  },
  "oklch": {
    "l": 0.59693,
    "c": 0.09539,
    "h": 216.6
  },
  "luminance": 0.22161
}

Semantic roles & 50–950 ramp

primary
#278DA4
secondary
#C27665
accent
#6143E5
background
#F7FAFB
surface
#EEF4F7
border
#C9CED0
text
#0A1012
muted
#7C7F81

Preview Lab

Preview with #278DA4

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

Preview Lab → · Contrast checker → · Palette generator →

#278DA4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva