#3680B3#3680B3

#3680B3 is a mid, moderate cyan. Relative luminance 0.195; OKLCH L 57.7% C 0.107 H 242.1°. Best body text is #000000 at 4.90:1 contrast (WCAG AA passes).

Color values

HEX#3680B3
RGBrgb(54, 128, 179)
HSLhsl(204, 54%, 46%)
HSVhsv(204, 70%, 70%)
CMYKcmyk(69.8%, 28.5%, 0%, 29.8%)
CIE-LABlab(51.24, -6.06, -33.58)
CIE-LCHlch(51.24, 34.12, 259.77°)
OKLaboklab(57.65% -0.0501 -0.0948)
OKLCHoklch(57.65% 0.107 242.1)
XYZxyz(17.3741, 19.4754, 45.4826)
Luminance0.1948 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3680B3 #B36936
analogous
#36B3A7 #3680B3 #3641B3
triadic
#3680B3 #B33680 #80B336
tetradic
#3680B3 #A736B3 #B36936 #41B336
square
#3680B3 #A736B3 #B36936 #41B336
split-complementary
#3680B3 #B33641 #B3A736
monochromatic
#1A3D55 #285E84 #3680B3 #599ECD #88B9DB

Accessibility & contrast

On white

4.29
#3680B3 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.90
#3680B3 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3680B3
4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3680B3#FFFFFF#000000##000000
##3680B31.004.294.904.90
#FFFFFF4.291.0021.0021.00
#0000004.9021.001.001.00
##0000004.9021.001.001.00

Color blindness preview

Protanopia (red-blind)
#6981B5
Deuteranopia (green-blind)
#5875B2
Tritanopia (blue-blind)
#008D92
Achromatopsia (no color)
#7A7A7A

Design tokens & code

CSS
--color: #3680b3;
/* rgb */ color: rgb(54, 128, 179);
/* oklch */ color: oklch(57.7% 0.107 242.1);
Tailwind
colors: {
  custom: {
    50: '#7ca4ca',
    500: '#3680b3',
    950: '#000000',
  },
}
SCSS
$custom: #3680b3;
$custom-light: #7ca4ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3680b3",
  "rgb": {
    "r": 54,
    "g": 128,
    "b": 179
  },
  "hsl": {
    "h": 204.48,
    "s": 53.648,
    "l": 45.686
  },
  "oklch": {
    "l": 0.57653,
    "c": 0.10722,
    "h": 242.1
  },
  "luminance": 0.19477
}

Semantic roles & 50–950 ramp

primary
#3680B3
secondary
#C59C80
accent
#864BDD
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3680B3

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

Preview Lab → · Contrast checker → · Palette generator →

#3680B3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva