#3680D9#3680D9

#3680D9 is a mid, vivid cyan. Relative luminance 0.212; OKLCH L 59.8% C 0.154 H 255.0°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).

Color values

HEX#3680D9
RGBrgb(54, 128, 217)
HSLhsl(213, 68%, 53%)
HSVhsv(213, 75%, 85%)
CMYKcmyk(75.1%, 41%, 0%, 14.9%)
CIE-LABlab(53.20, 7.60, -52.13)
CIE-LCHlch(53.20, 52.68, 278.29°)
OKLaboklab(59.83% -0.0399 -0.149)
OKLCHoklch(59.83% 0.154 255)
XYZxyz(21.7602, 21.2299, 68.5831)
Luminance0.2123 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3680D9 #D98F36
analogous
#36D1D9 #3680D9 #3D36D9
triadic
#3680D9 #D93680 #80D936
tetradic
#3680D9 #D936D1 #D98F36 #36D93D
square
#3680D9 #D936D1 #D98F36 #36D93D
split-complementary
#3680D9 #D93D36 #D1D936
monochromatic
#18467D #2162B0 #3680D9 #69A1E3 #9DC1EC

Accessibility & contrast

On white

4.00
#3680D9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.25
#3680D9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3680D9
5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3680D9#FFFFFF#000000##000000
##3680D91.004.005.255.25
#FFFFFF4.001.0021.0021.00
#0000005.2521.001.001.00
##0000005.2521.001.001.00

Color blindness preview

Protanopia (red-blind)
#5587DD
Deuteranopia (green-blind)
#3978D7
Tritanopia (blue-blind)
#0095A2
Achromatopsia (no color)
#7F7F7F

Design tokens & code

CSS
--color: #3680d9;
/* rgb */ color: rgb(54, 128, 217);
/* oklch */ color: oklch(59.8% 0.154 255.0);
Tailwind
colors: {
  custom: {
    50: '#83a4e5',
    500: '#3680d9',
    950: '#000000',
  },
}
SCSS
$custom: #3680d9;
$custom-light: #83a4e5;
$custom-dark: #000000;
JSON
{
  "hex": "#3680d9",
  "rgb": {
    "r": 54,
    "g": 128,
    "b": 217
  },
  "hsl": {
    "h": 212.761,
    "s": 68.201,
    "l": 53.137
  },
  "oklch": {
    "l": 0.59832,
    "c": 0.15427,
    "h": 255
  },
  "luminance": 0.21232
}

Semantic roles & 50–950 ramp

primary
#3680D9
secondary
#D9B992
accent
#9C3DEB
background
#F8FAFE
surface
#F0F3FC
border
#CBCDD5
text
#0C0F16
muted
#7D7F84

Preview Lab

Preview with #3680D9

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

Preview Lab → · Contrast checker → · Palette generator →

#3680D9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva