#1B1BC9#1B1BC9

#1B1BC9 is a dark, highly saturated blue. Relative luminance 0.052; OKLCH L 40.0% C 0.246 H 267.7°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX#1B1BC9
RGBrgb(27, 27, 201)
HSLhsl(240, 76%, 45%)
HSVhsv(240, 87%, 79%)
CMYKcmyk(86.6%, 86.6%, 0%, 21.2%)
CIE-LABlab(27.39, 59.44, -85.11)
CIE-LCHlch(27.39, 103.81, 304.93°)
OKLaboklab(40.03% -0.0097 -0.2463)
OKLCHoklch(40.03% 0.246 267.7)
XYZxyz(11.3829, 5.2325, 55.6570)
Luminance0.0523 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#1B1BC9 #C9C91B
analogous
#1B72C9 #1B1BC9 #721BC9
triadic
#1B1BC9 #C91B1B #1BC91B
tetradic
#1B1BC9 #C91B72 #C9C91B #1BC972
square
#1B1BC9 #C91B72 #C9C91B #1BC972
split-complementary
#1B1BC9 #C9721B #72C91B
monochromatic
#0D0D5D #141493 #1B1BC9 #3C3CE5 #7272EC

Accessibility & contrast

On white

10.26
#1B1BC9 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.05
#1B1BC9 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1BC9
10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##1B1BC9#FFFFFF#000000##FFFFFF
##1B1BC91.0010.262.0510.26
#FFFFFF10.261.0021.001.00
#0000002.0521.001.0021.00
##FFFFFF10.261.0021.001.00

Color blindness preview

Protanopia (red-blind)
#004ACE
Deuteranopia (green-blind)
#0037C6
Tritanopia (blue-blind)
#005777
Achromatopsia (no color)
#414141

Design tokens & code

CSS
--color: #1b1bc9;
/* rgb */ color: rgb(27, 27, 201);
/* oklch */ color: oklch(40.0% 0.246 267.7);
Tailwind
colors: {
  custom: {
    50: '#7e5fdb',
    500: '#1b1bc9',
    950: '#000000',
  },
}
SCSS
$custom: #1b1bc9;
$custom-light: #7e5fdb;
$custom-dark: #000000;
JSON
{
  "hex": "#1b1bc9",
  "rgb": {
    "r": 27,
    "g": 27,
    "b": 201
  },
  "hsl": {
    "h": 240,
    "s": 76.316,
    "l": 44.706
  },
  "oklch": {
    "l": 0.40025,
    "c": 0.24649,
    "h": 267.7
  },
  "luminance": 0.05234
}

Semantic roles & 50–950 ramp

primary
#1B1BC9
secondary
#D3D36D
accent
#F335F3
background
#F8F5FD
surface
#F0EAFB
border
#CBC6D4
text
#0C0515
muted
#7D7983

Preview Lab

Preview with #1B1BC9

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

Preview Lab → · Contrast checker → · Palette generator →

#1B1BC9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva