#3678CC#3678CC

#3678CC is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.2% C 0.146 H 255.8°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX#3678CC
RGBrgb(54, 120, 204)
HSLhsl(214, 60%, 51%)
HSVhsv(214, 74%, 80%)
CMYKcmyk(73.5%, 41.2%, 0%, 20%)
CIE-LABlab(50.19, 7.75, -49.57)
CIE-LCHlch(50.19, 50.18, 278.88°)
OKLaboklab(57.25% -0.0357 -0.1416)
OKLCHoklch(57.25% 0.146 255.8)
XYZxyz(19.1329, 18.5747, 59.6920)
Luminance0.1858 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3678CC #CC8A36
analogous
#36C3CC #3678CC #3F36CC
triadic
#3678CC #CC3678 #78CC36
tetradic
#3678CC #CC36C3 #CC8A36 #36CC3F
square
#3678CC #CC36C3 #CC8A36 #36CC3F
split-complementary
#3678CC #CC3F36 #C3CC36
monochromatic
#1B3F6C #285B9D #3678CC #6799D8 #98BAE5

Accessibility & contrast

On white

4.45
#3678CC on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.72
#3678CC on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3678CC
4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3678CC#FFFFFF#000000##000000
##3678CC1.004.454.724.72
#FFFFFF4.451.0021.0021.00
#0000004.7221.001.001.00
##0000004.7221.001.001.00

Color blindness preview

Protanopia (red-blind)
#507FCF
Deuteranopia (green-blind)
#3771CA
Tritanopia (blue-blind)
#008C98
Achromatopsia (no color)
#777777

Design tokens & code

CSS
--color: #3678cc;
/* rgb */ color: rgb(54, 120, 204);
/* oklch */ color: oklch(57.2% 0.146 255.8);
Tailwind
colors: {
  custom: {
    50: '#809edc',
    500: '#3678cc',
    950: '#000000',
  },
}
SCSS
$custom: #3678cc;
$custom-light: #809edc;
$custom-dark: #000000;
JSON
{
  "hex": "#3678cc",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 213.6,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57249,
    "c": 0.14607,
    "h": 255.8
  },
  "luminance": 0.18577
}

Semantic roles & 50–950 ramp

primary
#3678CC
secondary
#D0B38E
accent
#9D45E3
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83

Preview Lab

Preview with #3678CC

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

Preview Lab → · Contrast checker → · Palette generator →

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