#101A4B#101A4B

#101A4B is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.4% C 0.092 H 269.5°. Best body text is #FFFFFF at 16.52:1 contrast (WCAG AA passes).

Color values

HEX#101A4B
RGBrgb(16, 26, 75)
HSLhsl(230, 65%, 18%)
HSVhsv(230, 79%, 29%)
CMYKcmyk(78.7%, 65.3%, 0%, 70.6%)
CIE-LABlab(11.67, 15.31, -31.72)
CIE-LCHlch(11.67, 35.22, 295.76°)
OKLaboklab(24.44% -0.0007 -0.0915)
OKLCHoklch(24.44% 0.092 269.5)
XYZxyz(1.8526, 1.3568, 6.8195)
Luminance0.0136 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#101A4B #4B4110
analogous
#10374B #101A4B #24104B
triadic
#101A4B #4B101A #1A4B10
tetradic
#101A4B #4B1037 #4B4110 #104B24
square
#101A4B #4B1037 #4B4110 #104B24
split-complementary
#101A4B #4B2410 #374B10
monochromatic
#050919 #050919 #101A4B #1B2B7D #263DB0

Accessibility & contrast

On white

16.52
#101A4B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.27
#101A4B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #101A4B
16.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##101A4B#FFFFFF#000000##FFFFFF
##101A4B1.0016.521.2716.52
#FFFFFF16.521.0021.001.00
#0000001.2721.001.0021.00
##FFFFFF16.521.0021.001.00

Color blindness preview

Protanopia (red-blind)
#00224D
Deuteranopia (green-blind)
#001C4A
Tritanopia (blue-blind)
#00262F
Achromatopsia (no color)
#1F1F1F

Design tokens & code

CSS
--color: #101a4b;
/* rgb */ color: rgb(16, 26, 75);
/* oklch */ color: oklch(24.4% 0.092 269.5);
Tailwind
colors: {
  custom: {
    50: '#58567e',
    500: '#101a4b',
    950: '#000000',
  },
}
SCSS
$custom: #101a4b;
$custom-light: #58567e;
$custom-dark: #000000;
JSON
{
  "hex": "#101a4b",
  "rgb": {
    "r": 16,
    "g": 26,
    "b": 75
  },
  "hsl": {
    "h": 229.831,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.24441,
    "c": 0.09151,
    "h": 269.5
  },
  "luminance": 0.01357
}

Semantic roles & 50–950 ramp

primary
#101A4B
secondary
#857732
accent
#CB40E8
background
#F5F5F7
surface
#E9E9EE
border
#C5C5C9
text
#04030A
muted
#79787C

Preview Lab

Preview with #101A4B

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

Preview Lab → · Contrast checker → · Palette generator →

#101A4B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva