#100F4D#100F4D

#100F4D is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.5% C 0.109 H 273.9°. Best body text is #FFFFFF at 17.54:1 contrast (WCAG AA passes).

Color values

HEX#100F4D
RGBrgb(16, 15, 77)
HSLhsl(241, 67%, 18%)
HSVhsv(241, 81%, 30%)
CMYKcmyk(79.2%, 80.5%, 0%, 69.8%)
CIE-LABlab(8.89, 24.09, -37.67)
CIE-LCHlch(8.89, 44.71, 302.60°)
OKLaboklab(22.48% 0.0074 -0.1089)
OKLCHoklch(22.48% 0.109 273.9)
XYZxyz(1.7236, 0.9875, 7.1195)
Luminance0.0099 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#100F4D #4C4D0F
analogous
#0F2D4D #100F4D #2F0F4D
triadic
#100F4D #4D100F #0F4D10
tetradic
#100F4D #4D0F2D #4C4D0F #0F4D2F
square
#100F4D #4D0F2D #4C4D0F #0F4D2F
split-complementary
#100F4D #4D2F0F #2D4D0F
monochromatic
#05051A #05051A #100F4D #1B1980 #2523B3

Accessibility & contrast

On white

17.54
#100F4D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.20
#100F4D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F4D
17.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##100F4D#FFFFFF#000000##FFFFFF
##100F4D1.0017.541.2017.54
#FFFFFF17.541.0021.001.00
#0000001.2021.001.0021.00
##FFFFFF17.541.0021.001.00

Color blindness preview

Protanopia (red-blind)
#001C4F
Deuteranopia (green-blind)
#00164C
Tritanopia (blue-blind)
#00212D
Achromatopsia (no color)
#191919

Design tokens & code

CSS
--color: #100f4d;
/* rgb */ color: rgb(16, 15, 77);
/* oklch */ color: oklch(22.5% 0.109 273.9);
Tailwind
colors: {
  custom: {
    50: '#5a4e80',
    500: '#100f4d',
    950: '#000000',
  },
}
SCSS
$custom: #100f4d;
$custom-light: #5a4e80;
$custom-dark: #000000;
JSON
{
  "hex": "#100f4d",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 77
  },
  "hsl": {
    "h": 240.968,
    "s": 67.391,
    "l": 18.039
  },
  "oklch": {
    "l": 0.22479,
    "c": 0.10919,
    "h": 273.9
  },
  "luminance": 0.00988
}

Semantic roles & 50–950 ramp

primary
#100F4D
secondary
#868731
accent
#EA3EE7
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#04010A
muted
#79777C

Preview Lab

Preview with #100F4D

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

Preview Lab → · Contrast checker → · Palette generator →

#100F4D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva