#2B1D91#2B1D91

#2B1D91 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 34.4% C 0.177 H 277.1°. Best body text is #FFFFFF at 12.45:1 contrast (WCAG AA passes).

Color values

HEX#2B1D91
RGBrgb(43, 29, 145)
HSLhsl(247, 67%, 34%)
HSVhsv(247, 80%, 57%)
CMYKcmyk(70.3%, 80%, 0%, 43.1%)
CIE-LABlab(21.71, 42.39, -60.79)
CIE-LCHlch(21.71, 74.11, 304.89°)
OKLaboklab(34.38% 0.0217 -0.1757)
OKLCHoklch(34.38% 0.177 277.1)
XYZxyz(6.5448, 3.4361, 27.1009)
Luminance0.0344 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#2B1D91 #83911D
analogous
#1D4991 #2B1D91 #651D91
triadic
#2B1D91 #912B1D #1D912B
tetradic
#2B1D91 #911D49 #83911D #1D9165
square
#2B1D91 #911D49 #83911D #1D9165
split-complementary
#2B1D91 #91651D #49911D
monochromatic
#0D092B #1C135E #2B1D91 #3A27C4 #5E4DDB

Accessibility & contrast

On white

12.45
#2B1D91 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.69
#2B1D91 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2B1D91
12.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##2B1D91#FFFFFF#000000##FFFFFF
##2B1D911.0012.451.6912.45
#FFFFFF12.451.0021.001.00
#0000001.6921.001.0021.00
##FFFFFF12.451.0021.001.00

Color blindness preview

Protanopia (red-blind)
#003994
Deuteranopia (green-blind)
#002F8F
Tritanopia (blue-blind)
#004057
Achromatopsia (no color)
#343434

Design tokens & code

CSS
--color: #2b1d91;
/* rgb */ color: rgb(43, 29, 145);
/* oklch */ color: oklch(34.4% 0.177 277.1);
Tailwind
colors: {
  custom: {
    50: '#755cb2',
    500: '#2b1d91',
    950: '#000000',
  },
}
SCSS
$custom: #2b1d91;
$custom-light: #755cb2;
$custom-dark: #000000;
JSON
{
  "hex": "#2b1d91",
  "rgb": {
    "r": 43,
    "g": 29,
    "b": 145
  },
  "hsl": {
    "h": 247.241,
    "s": 66.667,
    "l": 34.118
  },
  "oklch": {
    "l": 0.34382,
    "c": 0.177,
    "h": 277.1
  },
  "luminance": 0.03437
}

Semantic roles & 50–950 ramp

primary
#2B1D91
secondary
#B0BE4C
accent
#EA3ED5
background
#F7F5FB
surface
#EEE9F6
border
#C9C5D0
text
#0A0411
muted
#7C7980

Preview Lab

Preview with #2B1D91

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

Preview Lab → · Contrast checker → · Palette generator →

#2B1D91 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva