#1C3D73#1C3D73

#1C3D73 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.101 H 259.8°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX#1C3D73
RGBrgb(28, 61, 115)
HSLhsl(217, 61%, 28%)
HSVhsv(217, 76%, 45%)
CMYKcmyk(75.7%, 47%, 0%, 54.9%)
CIE-LABlab(26.22, 8.33, -34.63)
CIE-LCHlch(26.22, 35.61, 283.52°)
OKLaboklab(36.66% -0.0179 -0.0991)
OKLCHoklch(36.66% 0.101 259.8)
XYZxyz(5.2410, 4.8216, 16.8708)
Luminance0.0482 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C3D73 #73521C
analogous
#1C6873 #1C3D73 #261C73
triadic
#1C3D73 #731C3D #3D731C
tetradic
#1C3D73 #731C68 #73521C #1C7326
square
#1C3D73 #731C68 #73521C #1C7326
split-complementary
#1C3D73 #73261C #68731C
monochromatic
#060D19 #102342 #1C3D73 #2857A4 #3A73CF

Accessibility & contrast

On white

10.69
#1C3D73 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.96
#1C3D73 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C3D73
10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C3D73#FFFFFF#000000##FFFFFF
##1C3D731.0010.691.9610.69
#FFFFFF10.691.0021.001.00
#0000001.9621.001.0021.00
##FFFFFF10.691.0021.001.00

Color blindness preview

Protanopia (red-blind)
#224275
Deuteranopia (green-blind)
#103A72
Tritanopia (blue-blind)
#004A52
Achromatopsia (no color)
#3E3E3E

Design tokens & code

CSS
--color: #1c3d73;
/* rgb */ color: rgb(28, 61, 115);
/* oklch */ color: oklch(36.7% 0.101 259.8);
Tailwind
colors: {
  custom: {
    50: '#65729c',
    500: '#1c3d73',
    950: '#000000',
  },
}
SCSS
$custom: #1c3d73;
$custom-light: #65729c;
$custom-dark: #000000;
JSON
{
  "hex": "#1c3d73",
  "rgb": {
    "r": 28,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 217.241,
    "s": 60.839,
    "l": 28.039
  },
  "oklch": {
    "l": 0.36655,
    "c": 0.10075,
    "h": 259.8
  },
  "luminance": 0.04822
}

Semantic roles & 50–950 ramp

primary
#1C3D73
secondary
#A78143
accent
#A744E4
background
#F6F6F9
surface
#EBECF2
border
#C6C7CC
text
#06070E
muted
#7A7A7E

Preview Lab

Preview with #1C3D73

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

Preview Lab → · Contrast checker → · Palette generator →

#1C3D73 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva