#100F5C#100F5C

#100F5C is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.3% C 0.130 H 271.8°. Best body text is #FFFFFF at 16.87:1 contrast (WCAG AA passes).

Color values

HEX#100F5C
RGBrgb(16, 15, 92)
HSLhsl(241, 72%, 21%)
HSVhsv(241, 84%, 36%)
CMYKcmyk(82.6%, 83.7%, 0%, 63.9%)
CIE-LABlab(10.74, 29.71, -44.85)
CIE-LCHlch(10.74, 53.80, 303.52°)
OKLaboklab(24.33% 0.0041 -0.1298)
OKLCHoklch(24.33% 0.13 271.8)
XYZxyz(2.3156, 1.2243, 10.2374)
Luminance0.0123 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#100F5C #5B5C0F
analogous
#0F345C #100F5C #360F5C
triadic
#100F5C #5C100F #0F5C10
tetradic
#100F5C #5C0F34 #5B5C0F #0F5C36
square
#100F5C #5C0F34 #5B5C0F #0F5C36
split-complementary
#100F5C #5C360F #345C0F
monochromatic
#05041A #070627 #100F5C #191891 #2220C5

Accessibility & contrast

On white

16.87
#100F5C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.24
#100F5C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #100F5C
16.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##100F5C#FFFFFF#000000##FFFFFF
##100F5C1.0016.871.2416.87
#FFFFFF16.871.0021.001.00
#0000001.2421.001.0021.00
##FFFFFF16.871.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00215E
Deuteranopia (green-blind)
#00195B
Tritanopia (blue-blind)
#002735
Achromatopsia (no color)
#1D1D1D

Design tokens & code

CSS
--color: #100f5c;
/* rgb */ color: rgb(16, 15, 92);
/* oklch */ color: oklch(24.3% 0.130 271.8);
Tailwind
colors: {
  custom: {
    50: '#5e4f8b',
    500: '#100f5c',
    950: '#000000',
  },
}
SCSS
$custom: #100f5c;
$custom-light: #5e4f8b;
$custom-dark: #000000;
JSON
{
  "hex": "#100f5c",
  "rgb": {
    "r": 16,
    "g": 15,
    "b": 92
  },
  "hsl": {
    "h": 240.779,
    "s": 71.963,
    "l": 20.98
  },
  "oklch": {
    "l": 0.2433,
    "c": 0.12988,
    "h": 271.8
  },
  "luminance": 0.01225
}

Semantic roles & 50–950 ramp

primary
#100F5C
secondary
#949531
accent
#EF39EC
background
#F5F4F8
surface
#EAE7F0
border
#C6C3CB
text
#05020C
muted
#79787D

Preview Lab

Preview with #100F5C

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

Preview Lab → · Contrast checker → · Palette generator →

#100F5C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva