#3681B4#3681B4

#3681B4 is a mid, moderate cyan. Relative luminance 0.198; OKLCH L 57.9% C 0.108 H 241.8°. Best body text is #000000 at 4.96:1 contrast (WCAG AA passes).

Color values

HEX#3681B4
RGBrgb(54, 129, 180)
HSLhsl(204, 54%, 46%)
HSVhsv(204, 70%, 71%)
CMYKcmyk(70%, 28.3%, 0%, 29.4%)
CIE-LABlab(51.59, -6.29, -33.61)
CIE-LCHlch(51.59, 34.19, 259.40°)
OKLaboklab(57.94% -0.0508 -0.0949)
OKLCHoklch(57.94% 0.108 241.8)
XYZxyz(17.6066, 19.7781, 46.0608)
Luminance0.1978 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3681B4 #B46936
analogous
#36B4A8 #3681B4 #3642B4
triadic
#3681B4 #B43681 #81B436
tetradic
#3681B4 #A836B4 #B46936 #42B436
square
#3681B4 #A836B4 #B46936 #42B436
split-complementary
#3681B4 #B43642 #B4A836
monochromatic
#1A3E56 #285F85 #3681B4 #5A9FCD #89BADC

Accessibility & contrast

On white

4.24
#3681B4 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

4.96
#3681B4 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3681B4
4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3681B4#FFFFFF#000000##000000
##3681B41.004.244.964.96
#FFFFFF4.241.0021.0021.00
#0000004.9621.001.001.00
##0000004.9621.001.001.00

Color blindness preview

Protanopia (red-blind)
#6A82B6
Deuteranopia (green-blind)
#5876B3
Tritanopia (blue-blind)
#008E93
Achromatopsia (no color)
#7B7B7B

Design tokens & code

CSS
--color: #3681b4;
/* rgb */ color: rgb(54, 129, 180);
/* oklch */ color: oklch(57.9% 0.108 241.8);
Tailwind
colors: {
  custom: {
    50: '#7ca5ca',
    500: '#3681b4',
    950: '#000000',
  },
}
SCSS
$custom: #3681b4;
$custom-light: #7ca5ca;
$custom-dark: #000000;
JSON
{
  "hex": "#3681b4",
  "rgb": {
    "r": 54,
    "g": 129,
    "b": 180
  },
  "hsl": {
    "h": 204.286,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.57943,
    "c": 0.10762,
    "h": 241.8
  },
  "luminance": 0.1978
}

Semantic roles & 50–950 ramp

primary
#3681B4
secondary
#C69C80
accent
#864BDD
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3681B4

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

Preview Lab → · Contrast checker → · Palette generator →

#3681B4 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva