#1C105B#1C105B

#1C105B is a dark, vivid blue. Relative luminance 0.014; OKLCH L 25.3% C 0.124 H 280.0°. Best body text is #FFFFFF at 16.48:1 contrast (WCAG AA passes).

Color values

HEX#1C105B
RGBrgb(28, 16, 91)
HSLhsl(250, 70%, 21%)
HSVhsv(250, 82%, 36%)
CMYKcmyk(69.2%, 82.4%, 0%, 64.3%)
CIE-LABlab(11.77, 30.00, -42.43)
CIE-LCHlch(11.77, 51.96, 305.27°)
OKLaboklab(25.27% 0.0216 -0.1225)
OKLCHoklch(25.27% 0.124 280)
XYZxyz(2.5519, 1.3726, 10.0260)
Luminance0.0137 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1C105B #4F5B10
analogous
#10295B #1C105B #41105B
triadic
#1C105B #5B1C10 #105B1C
tetradic
#1C105B #5B1029 #4F5B10 #105B41
square
#1C105B #5B1029 #4F5B10 #105B41
split-complementary
#1C105B #5B4110 #295B10
monochromatic
#08051A #0C0727 #1C105B #2C198F #3C22C3

Accessibility & contrast

On white

16.48
#1C105B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.27
#1C105B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C105B
16.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1C105B#FFFFFF#000000##FFFFFF
##1C105B1.0016.481.2716.48
#FFFFFF16.481.0021.001.00
#0000001.2721.001.0021.00
##FFFFFF16.481.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00225D
Deuteranopia (green-blind)
#001C5A
Tritanopia (blue-blind)
#002635
Achromatopsia (no color)
#1F1F1F

Design tokens & code

CSS
--color: #1c105b;
/* rgb */ color: rgb(28, 16, 91);
/* oklch */ color: oklch(25.3% 0.124 280.0);
Tailwind
colors: {
  custom: {
    50: '#63508a',
    500: '#1c105b',
    950: '#000000',
  },
}
SCSS
$custom: #1c105b;
$custom-light: #63508a;
$custom-dark: #000000;
JSON
{
  "hex": "#1c105b",
  "rgb": {
    "r": 28,
    "g": 16,
    "b": 91
  },
  "hsl": {
    "h": 249.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.2527,
    "c": 0.12435,
    "h": 280
  },
  "luminance": 0.01373
}

Semantic roles & 50–950 ramp

primary
#1C105B
secondary
#859433
accent
#ED3BD0
background
#F6F4F8
surface
#EBE7F0
border
#C6C3CB
text
#06020C
muted
#7A787D

Preview Lab

Preview with #1C105B

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

Preview Lab → · Contrast checker → · Palette generator →

#1C105B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva