#1B022B#1B022B

#1B022B is a very dark, moderate violet. Relative luminance 0.005; OKLCH L 17.6% C 0.082 H 308.8°. Best body text is #FFFFFF at 19.26:1 contrast (WCAG AA passes).

Color values

HEX	#1B022B
RGB	rgb(27, 2, 43)
HSL	hsl(277, 91%, 9%)
HSV	hsv(277, 95%, 17%)
CMYK	cmyk(37.2%, 95.3%, 0%, 83.1%)
CIE-LAB	lab(4.07, 19.64, -20.87)
CIE-LCH	lch(4.07, 28.66, 313.26°)
OKLab	oklab(17.6% 0.0513 -0.0638)
OKLCH	oklch(17.6% 0.082 308.8)
XYZ	xyz(0.9097, 0.4509, 2.3241)
Luminance	0.0045 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.53

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B022B #122B02

analogous

#07022B #1B022B #2B0227

triadic

#1B022B #2B1B02 #022B1B

tetradic

#1B022B #2B0702 #122B02 #02272B

square

#1B022B #2B0702 #122B02 #02272B

split-complementary

#1B022B #272B02 #022B07

monochromatic

#12011D #12011D #1B022B #400565 #6407A0

Accessibility & contrast

On white

19.26

#1B022B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#1B022B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B022B

19.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B022B	#FFFFFF	#000000	##FFFFFF
##1B022B	1.00	19.26	1.09	19.26
#FFFFFF	19.26	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D2C

Deuteranopia (green-blind)

#000F2A

Tritanopia (blue-blind)

#180B16

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #1b022b;
/* rgb */ color: rgb(27, 2, 43);
/* oklch */ color: oklch(17.6% 0.082 308.8);

Tailwind

colors: {
  custom: {
    50: '#584764',
    500: '#1b022b',
    950: '#000000',
  },
}

SCSS

$custom: #1b022b;
$custom-light: #584764;
$custom-dark: #000000;

JSON

{
  "hex": "#1b022b",
  "rgb": {
    "r": 27,
    "g": 2,
    "b": 43
  },
  "hsl": {
    "h": 276.585,
    "s": 91.111,
    "l": 8.824
  },
  "oklch": {
    "l": 0.17602,
    "c": 0.08188,
    "h": 308.8
  },
  "luminance": 0.00451
}

Semantic roles & 50–950 ramp

primary

#1B022B

secondary

#3B7019

accent

#FF297C

background

#F5F4F6

surface

#E9E6EB

border

#C5C2C6

text

#030005

muted

#78777A

Preview Lab

Preview with #1B022B

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

Preview Lab → · Contrast checker → · Palette generator →