#3683B1#3683B1

#3683B1 is a mid, moderate cyan. Relative luminance 0.202; OKLCH L 58.3% C 0.103 H 238.5°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX#3683B1
RGBrgb(54, 131, 177)
HSLhsl(202, 53%, 45%)
HSVhsv(202, 69%, 69%)
CMYKcmyk(69.5%, 26%, 0%, 30.6%)
CIE-LABlab(52.05, -8.49, -31.16)
CIE-LCHlch(52.05, 32.29, 254.75°)
OKLaboklab(58.27% -0.0539 -0.0877)
OKLCHoklch(58.27% 0.103 238.5)
XYZxyz(17.5704, 20.1893, 44.5574)
Luminance0.2019 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#3683B1 #B16436
analogous
#36B1A1 #3683B1 #3645B1
triadic
#3683B1 #B13683 #83B136
tetradic
#3683B1 #A136B1 #B16436 #45B136
square
#3683B1 #A136B1 #B16436 #45B136
split-complementary
#3683B1 #B13645 #B1A136
monochromatic
#193E53 #286082 #3683B1 #58A1CC #87BBDA

Accessibility & contrast

On white

4.17
#3683B1 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.04
#3683B1 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3683B1
5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##3683B1#FFFFFF#000000##000000
##3683B11.004.175.045.04
#FFFFFF4.171.0021.0021.00
#0000005.0421.001.001.00
##0000005.0421.001.001.00

Color blindness preview

Protanopia (red-blind)
#6E83B3
Deuteranopia (green-blind)
#5D77B0
Tritanopia (blue-blind)
#008F93
Achromatopsia (no color)
#7C7C7C

Design tokens & code

CSS
--color: #3683b1;
/* rgb */ color: rgb(54, 131, 177);
/* oklch */ color: oklch(58.3% 0.103 238.5);
Tailwind
colors: {
  custom: {
    50: '#7ca7c8',
    500: '#3683b1',
    950: '#000000',
  },
}
SCSS
$custom: #3683b1;
$custom-light: #7ca7c8;
$custom-dark: #000000;
JSON
{
  "hex": "#3683b1",
  "rgb": {
    "r": 54,
    "g": 131,
    "b": 177
  },
  "hsl": {
    "h": 202.439,
    "s": 53.247,
    "l": 45.294
  },
  "oklch": {
    "l": 0.58266,
    "c": 0.10295,
    "h": 238.5
  },
  "luminance": 0.20191
}

Semantic roles & 50–950 ramp

primary
#3683B1
secondary
#C4997F
accent
#824BDD
background
#F8FAFC
surface
#EFF4F8
border
#CACED1
text
#0B0F13
muted
#7C7F82

Preview Lab

Preview with #3683B1

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

Preview Lab → · Contrast checker → · Palette generator →

#3683B1 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva