#1B012B#1B012B

#1B012B is a very dark, moderate violet. Relative luminance 0.004; OKLCH L 17.4% C 0.084 H 309.3°. Best body text is #FFFFFF at 19.34:1 contrast (WCAG AA passes).

Color values

HEX	#1B012B
RGB	rgb(27, 1, 43)
HSL	hsl(277, 95%, 9%)
HSV	hsv(277, 98%, 17%)
CMYK	cmyk(37.2%, 97.7%, 0%, 83.1%)
CIE-LAB	lab(3.88, 20.06, -21.18)
CIE-LCH	lch(3.88, 29.17, 313.44°)
OKLab	oklab(17.39% 0.0534 -0.0653)
OKLCH	oklch(17.39% 0.084 309.3)
XYZ	xyz(0.8988, 0.4292, 2.3205)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B012B #112B01

analogous

#06012B #1B012B #2B0126

triadic

#1B012B #2B1B01 #012B1B

tetradic

#1B012B #2B0601 #112B01 #01262B

square

#1B012B #2B0601 #112B01 #01262B

split-complementary

#1B012B #262B01 #012B06

monochromatic

#13011E #13011E #1B012B #410267 #6604A3

Accessibility & contrast

On white

19.34

#1B012B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#1B012B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B012B

19.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B012B	#FFFFFF	#000000	##FFFFFF
##1B012B	1.00	19.34	1.09	19.34
#FFFFFF	19.34	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D2C

Deuteranopia (green-blind)

#000E2A

Tritanopia (blue-blind)

#180A15

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #1b012b;
/* rgb */ color: rgb(27, 1, 43);
/* oklch */ color: oklch(17.4% 0.084 309.3);

Tailwind

colors: {
  custom: {
    50: '#584664',
    500: '#1b012b',
    950: '#000000',
  },
}

SCSS

$custom: #1b012b;
$custom-light: #584664;
$custom-dark: #000000;

JSON

{
  "hex": "#1b012b",
  "rgb": {
    "r": 27,
    "g": 1,
    "b": 43
  },
  "hsl": {
    "h": 277.143,
    "s": 95.455,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17386,
    "c": 0.08435,
    "h": 309.3
  },
  "luminance": 0.00429
}

Semantic roles & 50–950 ramp

primary

#1B012B

secondary

#397117

accent

#FF297A

background

#F5F3F6

surface

#E9E5EB

border

#C5C1C6

text

#030005

muted

#78777A

Preview Lab

Preview with #1B012B

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

Preview Lab → · Contrast checker → · Palette generator →