#1B0028#1B0028

#1B0028 is a very dark, moderate purple. Relative luminance 0.004; OKLCH L 16.8% C 0.084 H 312.7°. Best body text is #FFFFFF at 19.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B0028
RGB	rgb(27, 0, 40)
HSL	hsl(281, 100%, 8%)
HSV	hsv(281, 100%, 16%)
CMYK	cmyk(32.5%, 100%, 0%, 84.3%)
CIE-LAB	lab(3.49, 19.16, -19.50)
CIE-LCH	lch(3.49, 27.34, 314.51°)
OKLab	oklab(16.84% 0.057 -0.0616)
OKLCH	oklch(16.84% 0.084 312.7)
XYZ	xyz(0.8349, 0.3862, 2.0376)
Luminance	0.0039 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0028 #0D2800

analogous

#070028 #1B0028 #280021

triadic

#1B0028 #281B00 #00281B

tetradic

#1B0028 #280700 #0D2800 #002128

square

#1B0028 #280700 #0D2800 #002128

split-complementary

#1B0028 #212800 #002807

monochromatic

#15001F #15001F #1B0028 #440065 #6E00A2

Accessibility & contrast

On white

19.49

#1B0028 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#1B0028 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0028

19.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0028	#FFFFFF	#000000	##FFFFFF
##1B0028	1.00	19.49	1.08	19.49
#FFFFFF	19.49	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000B29

Deuteranopia (green-blind)

#000D27

Tritanopia (blue-blind)

#190713

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #1b0028;
/* rgb */ color: rgb(27, 0, 40);
/* oklch */ color: oklch(16.8% 0.084 312.7);

Tailwind

colors: {
  custom: {
    50: '#574662',
    500: '#1b0028',
    950: '#000000',
  },
}

SCSS

$custom: #1b0028;
$custom-light: #574662;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0028",
  "rgb": {
    "r": 27,
    "g": 0,
    "b": 40
  },
  "hsl": {
    "h": 280.5,
    "s": 100,
    "l": 7.843
  },
  "oklch": {
    "l": 0.1684,
    "c": 0.08395,
    "h": 312.7
  },
  "luminance": 0.00386
}

Semantic roles & 50–950 ramp

primary

#1B0028

secondary

#327014

accent

#FF296E

background

#F5F3F5

surface

#E9E5EA

border

#C5C1C6

text

#030005

muted

#787779

Preview Lab

Preview with #1B0028

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

Preview Lab → · Contrast checker → · Palette generator →