#3683B5#3683B5

#3683B5 is a mid, moderate cyan. Relative luminance 0.204; OKLCH L 58.5% C 0.107 H 240.7°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX#3683B5
RGBrgb(54, 131, 181)
HSLhsl(204, 54%, 46%)
HSVhsv(204, 70%, 71%)
CMYKcmyk(70.2%, 27.6%, 0%, 29%)
CIE-LABlab(52.23, -7.10, -33.17)
CIE-LCHlch(52.23, 33.93, 257.91°)
OKLaboklab(58.47% -0.0525 -0.0936)
OKLCHoklch(58.47% 0.107 240.7)
XYZxyz(17.9749, 20.3511, 46.6879)
Luminance0.2035 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3683B5 #B56836
analogous
#36B5A7 #3683B5 #3643B5
triadic
#3683B5 #B53683 #83B536
tetradic
#3683B5 #A736B5 #B56836 #43B536
square
#3683B5 #A736B5 #B56836 #43B536
split-complementary
#3683B5 #B53643 #B5A736
monochromatic
#1A3F57 #286186 #3683B5 #5AA0CE #89BBDC

Accessibility & contrast

On white

4.14
#3683B5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.07
#3683B5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3683B5
5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3683B5#FFFFFF#000000##000000
##3683B51.004.145.075.07
#FFFFFF4.141.0021.0021.00
#0000005.0721.001.001.00
##0000005.0721.001.001.00

Color blindness preview

Protanopia (red-blind)
#6C83B7
Deuteranopia (green-blind)
#5B77B4
Tritanopia (blue-blind)
#008F94
Achromatopsia (no color)
#7D7D7D

Design tokens & code

CSS
--color: #3683b5;
/* rgb */ color: rgb(54, 131, 181);
/* oklch */ color: oklch(58.5% 0.107 240.7);
Tailwind
colors: {
  custom: {
    50: '#7ca6cb',
    500: '#3683b5',
    950: '#000000',
  },
}
SCSS
$custom: #3683b5;
$custom-light: #7ca6cb;
$custom-dark: #000000;
JSON
{
  "hex": "#3683b5",
  "rgb": {
    "r": 54,
    "g": 131,
    "b": 181
  },
  "hsl": {
    "h": 203.622,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.5847,
    "c": 0.10731,
    "h": 240.7
  },
  "luminance": 0.20353
}

Semantic roles & 50–950 ramp

primary
#3683B5
secondary
#C69C81
accent
#844ADD
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3683B5

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

Preview Lab → · Contrast checker → · Palette generator →

#3683B5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva