#100D4A#100D4A

#100D4A is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.8% C 0.107 H 275.0°. Best body text is #FFFFFF at 17.82:1 contrast (WCAG AA passes).

Color values

HEX#100D4A
RGBrgb(16, 13, 74)
HSLhsl(243, 70%, 17%)
HSVhsv(243, 82%, 29%)
CMYKcmyk(78.4%, 82.4%, 0%, 71%)
CIE-LABlab(8.06, 24.26, -36.94)
CIE-LCHlch(8.06, 44.20, 303.29°)
OKLaboklab(21.78% 0.0093 -0.1068)
OKLCHoklch(21.78% 0.107 275)
XYZxyz(1.5932, 0.8923, 6.5655)
Luminance0.0089 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#100D4A #474A0D
analogous
#0D294A #100D4A #2F0D4A
triadic
#100D4A #4A100D #0D4A10
tetradic
#100D4A #4A0D29 #474A0D #0D4A2F
square
#100D4A #4A0D29 #474A0D #0D4A2F
split-complementary
#100D4A #4A2F0D #294A0D
monochromatic
#06051A #06051A #100D4A #1B167E #271FB2

Accessibility & contrast

On white

17.82
#100D4A on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.18
#100D4A on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100D4A
17.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##100D4A#FFFFFF#000000##FFFFFF
##100D4A1.0017.821.1817.82
#FFFFFF17.821.0021.001.00
#0000001.1821.001.0021.00
##FFFFFF17.821.0021.001.00

Color blindness preview

Protanopia (red-blind)
#001A4C
Deuteranopia (green-blind)
#001549
Tritanopia (blue-blind)
#001F2A
Achromatopsia (no color)
#181818

Design tokens & code

CSS
--color: #100d4a;
/* rgb */ color: rgb(16, 13, 74);
/* oklch */ color: oklch(21.8% 0.107 275.0);
Tailwind
colors: {
  custom: {
    50: '#594c7d',
    500: '#100d4a',
    950: '#000000',
  },
}
SCSS
$custom: #100d4a;
$custom-light: #594c7d;
$custom-dark: #000000;
JSON
{
  "hex": "#100d4a",
  "rgb": {
    "r": 16,
    "g": 13,
    "b": 74
  },
  "hsl": {
    "h": 242.951,
    "s": 70.115,
    "l": 17.059
  },
  "oklch": {
    "l": 0.21784,
    "c": 0.10723,
    "h": 275
  },
  "luminance": 0.00892
}

Semantic roles & 50–950 ramp

primary
#100D4A
secondary
#81852E
accent
#ED3BE4
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#04010A
muted
#79777C

Preview Lab

Preview with #100D4A

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

Preview Lab → · Contrast checker → · Palette generator →

#100D4A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva