#3678B8#3678B8

#3678B8 is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.0% C 0.120 H 250.2°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX#3678B8
RGBrgb(54, 120, 184)
HSLhsl(210, 55%, 47%)
HSVhsv(210, 71%, 72%)
CMYKcmyk(70.7%, 34.8%, 0%, 27.8%)
CIE-LABlab(49.10, 0.48, -39.82)
CIE-LCHlch(49.10, 39.83, 270.69°)
OKLaboklab(56.05% -0.0406 -0.1131)
OKLCHoklch(56.05% 0.12 250.2)
XYZxyz(16.8863, 17.6761, 47.8600)
Luminance0.1768 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3678B8 #B87636
analogous
#36B8B7 #3678B8 #3637B8
triadic
#3678B8 #B83678 #78B836
tetradic
#3678B8 #B736B8 #B87636 #37B836
square
#3678B8 #B736B8 #B87636 #37B836
split-complementary
#3678B8 #B83637 #B8B736
monochromatic
#1A3A59 #285989 #3678B8 #5C96CF #8BB5DD

Accessibility & contrast

On white

4.63
#3678B8 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.54
#3678B8 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3678B8
4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3678B8#FFFFFF#000000##FFFFFF
##3678B81.004.634.544.63
#FFFFFF4.631.0021.001.00
#0000004.5421.001.0021.00
##FFFFFF4.631.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5B7BBB
Deuteranopia (green-blind)
#496FB7
Tritanopia (blue-blind)
#00878F
Achromatopsia (no color)
#757575

Design tokens & code

CSS
--color: #3678b8;
/* rgb */ color: rgb(54, 120, 184);
/* oklch */ color: oklch(56.0% 0.120 250.2);
Tailwind
colors: {
  custom: {
    50: '#7c9ecd',
    500: '#3678b8',
    950: '#000000',
  },
}
SCSS
$custom: #3678b8;
$custom-light: #7c9ecd;
$custom-dark: #000000;
JSON
{
  "hex": "#3678b8",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 184
  },
  "hsl": {
    "h": 209.538,
    "s": 54.622,
    "l": 46.667
  },
  "oklch": {
    "l": 0.56049,
    "c": 0.12014,
    "h": 250.2
  },
  "luminance": 0.17678
}

Semantic roles & 50–950 ramp

primary
#3678B8
secondary
#C7A482
accent
#934ADE
background
#F8F9FC
surface
#EFF2F9
border
#CACCD2
text
#0B0E13
muted
#7C7E82

Preview Lab

Preview with #3678B8

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

Preview Lab → · Contrast checker → · Palette generator →

#3678B8 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva