#1B0023#1B0023

#1B0023 is a very dark, moderate purple. Relative luminance 0.004; OKLCH L 16.3% C 0.079 H 318.2°. Best body text is #FFFFFF at 19.61:1 contrast (WCAG AA passes).

Color values

HEX	#1B0023
RGB	rgb(27, 0, 35)
HSL	hsl(286, 100%, 7%)
HSV	hsv(286, 100%, 14%)
CMYK	cmyk(22.9%, 100%, 0%, 86.3%)
CIE-LAB	lab(3.20, 17.14, -16.07)
CIE-LCH	lch(3.20, 23.50, 316.85°)
OKLab	oklab(16.33% 0.059 -0.0527)
OKLCH	oklch(16.33% 0.079 318.2)
XYZ	xyz(0.7553, 0.3544, 1.6184)
Luminance	0.0035 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0023 #082300

analogous

#0A0023 #1B0023 #23001A

triadic

#1B0023 #231B00 #00231B

tetradic

#1B0023 #230A00 #082300 #001A23

square

#1B0023 #230A00 #082300 #001A23

split-complementary

#1B0023 #1A2300 #00230A

monochromatic

#18001F #18001F #1B0023 #4A0060 #79009D

Accessibility & contrast

On white

19.61

#1B0023 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#1B0023 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0023

19.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0023	#FFFFFF	#000000	##FFFFFF
##1B0023	1.00	19.61	1.07	19.61
#FFFFFF	19.61	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000A24

Deuteranopia (green-blind)

#010D22

Tritanopia (blue-blind)

#1B0510

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #1b0023;
/* rgb */ color: rgb(27, 0, 35);
/* oklch */ color: oklch(16.3% 0.079 318.2);

Tailwind

colors: {
  custom: {
    50: '#57465e',
    500: '#1b0023',
    950: '#000000',
  },
}

SCSS

$custom: #1b0023;
$custom-light: #57465e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0023",
  "rgb": {
    "r": 27,
    "g": 0,
    "b": 35
  },
  "hsl": {
    "h": 286.286,
    "s": 100,
    "l": 6.863
  },
  "oklch": {
    "l": 0.16327,
    "c": 0.07909,
    "h": 318.2
  },
  "luminance": 0.00354
}

Semantic roles & 50–950 ramp

primary

#1B0023

secondary

#276C13

accent

#FF295A

background

#F5F3F5

surface

#E9E5E9

border

#C5C1C5

text

#030004

muted

#787779

Preview Lab

Preview with #1B0023

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

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