#1B134B#1B134B

#1B134B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.099 H 282.5°. Best body text is #FFFFFF at 16.92:1 contrast (WCAG AA passes).

Color values

HEX#1B134B
RGBrgb(27, 19, 75)
HSLhsl(249, 60%, 18%)
HSVhsv(249, 75%, 29%)
CMYKcmyk(64%, 74.7%, 0%, 70.6%)
CIE-LABlab(10.61, 22.30, -33.42)
CIE-LCHlch(10.61, 40.18, 303.72°)
OKLaboklab(23.89% 0.0213 -0.0962)
OKLCHoklch(23.89% 0.099 282.5)
XYZxyz(1.9545, 1.2066, 6.7852)
Luminance0.0121 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B134B #434B13
analogous
#13274B #1B134B #37134B
triadic
#1B134B #4B1B13 #134B1B
tetradic
#1B134B #4B1327 #434B13 #134B37
square
#1B134B #4B1327 #434B13 #134B37
split-complementary
#1B134B #4B3713 #274B13
monochromatic
#090618 #09071A #1B134B #2D1F7C #3E2CAD

Accessibility & contrast

On white

16.92
#1B134B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.24
#1B134B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B134B
16.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B134B#FFFFFF#000000##FFFFFF
##1B134B1.0016.921.2416.92
#FFFFFF16.921.0021.001.00
#0000001.2421.001.0021.00
##FFFFFF16.921.0021.001.00

Color blindness preview

Protanopia (red-blind)
#001F4D
Deuteranopia (green-blind)
#001B4A
Tritanopia (blue-blind)
#02212D
Achromatopsia (no color)
#1D1D1D

Design tokens & code

CSS
--color: #1b134b;
/* rgb */ color: rgb(27, 19, 75);
/* oklch */ color: oklch(23.9% 0.099 282.5);
Tailwind
colors: {
  custom: {
    50: '#5e517e',
    500: '#1b134b',
    950: '#000000',
  },
}
SCSS
$custom: #1b134b;
$custom-light: #5e517e;
$custom-dark: #000000;
JSON
{
  "hex": "#1b134b",
  "rgb": {
    "r": 27,
    "g": 19,
    "b": 75
  },
  "hsl": {
    "h": 248.571,
    "s": 59.574,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23889,
    "c": 0.0985,
    "h": 282.5
  },
  "luminance": 0.01207
}

Semantic roles & 50–950 ramp

primary
#1B134B
secondary
#798436
accent
#E345CC
background
#F5F4F7
surface
#E9E7EE
border
#C5C3C9
text
#05020A
muted
#79787C

Preview Lab

Preview with #1B134B

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

Preview Lab → · Contrast checker → · Palette generator →

#1B134B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva