#1B104C#1B104C

#1B104C is a very dark, moderate violet. Relative luminance 0.011; OKLCH L 23.5% C 0.104 H 283.3°. Best body text is #FFFFFF at 17.14:1 contrast (WCAG AA passes).

Color values

HEX#1B104C
RGBrgb(27, 16, 76)
HSLhsl(251, 65%, 18%)
HSVhsv(251, 79%, 30%)
CMYKcmyk(64.5%, 78.9%, 0%, 70.2%)
CIE-LABlab(9.99, 24.63, -35.11)
CIE-LCHlch(9.99, 42.89, 305.05°)
OKLaboklab(23.48% 0.024 -0.1011)
OKLCHoklch(23.48% 0.104 283.3)
XYZxyz(1.9414, 1.1253, 6.9510)
Luminance0.0112 (WCAG relative)
Temperaturecool
Familyviolet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B104C #414C10
analogous
#10234C #1B104C #39104C
triadic
#1B104C #4C1B10 #104C1B
tetradic
#1B104C #4C1023 #414C10 #104C39
square
#1B104C #4C1023 #414C10 #104C39
split-complementary
#1B104C #4C3910 #234C10
monochromatic
#090519 #090519 #1B104C #2D1B7F #3F25B1

Accessibility & contrast

On white

17.14
#1B104C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.22
#1B104C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B104C
17.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B104C#FFFFFF#000000##FFFFFF
##1B104C1.0017.141.2217.14
#FFFFFF17.141.0021.001.00
#0000001.2221.001.0021.00
##FFFFFF17.141.0021.001.00

Color blindness preview

Protanopia (red-blind)
#001D4E
Deuteranopia (green-blind)
#00194B
Tritanopia (blue-blind)
#01202C
Achromatopsia (no color)
#1B1B1B

Design tokens & code

CSS
--color: #1b104c;
/* rgb */ color: rgb(27, 16, 76);
/* oklch */ color: oklch(23.5% 0.104 283.3);
Tailwind
colors: {
  custom: {
    50: '#5e4f7f',
    500: '#1b104c',
    950: '#000000',
  },
}
SCSS
$custom: #1b104c;
$custom-light: #5e4f7f;
$custom-dark: #000000;
JSON
{
  "hex": "#1b104c",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 76
  },
  "hsl": {
    "h": 251,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23483,
    "c": 0.10394,
    "h": 283.3
  },
  "luminance": 0.01125
}

Semantic roles & 50–950 ramp

primary
#1B104C
secondary
#768632
accent
#E840C9
background
#F5F4F7
surface
#EAE7EE
border
#C6C3C9
text
#05020A
muted
#79787C

Preview Lab

Preview with #1B104C

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

Preview Lab → · Contrast checker → · Palette generator →

#1B104C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva