#1B0C4B#1B0C4B

#1B0C4B is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.8% C 0.107 H 284.9°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#1B0C4B
RGB	rgb(27, 12, 75)
HSL	hsl(254, 72%, 17%)
HSV	hsv(254, 84%, 29%)
CMYK	cmyk(64%, 84%, 0%, 70.6%)
CIE-LAB	lab(9.02, 26.71, -36.02)
CIE-LCH	lch(9.02, 44.84, 306.56°)
OKLab	oklab(22.76% 0.0277 -0.1037)
OKLCH	oklch(22.76% 0.107 284.9)
XYZ	xyz(1.8531, 1.0038, 6.7514)
Luminance	0.0100 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.12

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0C4B #3C4B0C

analogous

#0C1C4B #1B0C4B #3B0C4B

triadic

#1B0C4B #4B1B0C #0C4B1B

tetradic

#1B0C4B #4B0C1C #3C4B0C #0C4B3B

square

#1B0C4B #4B0C1C #3C4B0C #0C4B3B

split-complementary

#1B0C4B #4B3B0C #1C4B0C

monochromatic

#09041A #09041A #1B0C4B #2E1480 #411DB5

Accessibility & contrast

On white

17.49

#1B0C4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#1B0C4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0C4B

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0C4B	#FFFFFF	#000000	##FFFFFF
##1B0C4B	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4D

Deuteranopia (green-blind)

#00184A

Tritanopia (blue-blind)

#031E2B

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #1b0c4b;
/* rgb */ color: rgb(27, 12, 75);
/* oklch */ color: oklch(22.8% 0.107 284.9);

Tailwind

colors: {
  custom: {
    50: '#5f4d7e',
    500: '#1b0c4b',
    950: '#000000',
  },
}

SCSS

$custom: #1b0c4b;
$custom-light: #5f4d7e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0c4b",
  "rgb": {
    "r": 27,
    "g": 12,
    "b": 75
  },
  "hsl": {
    "h": 254.286,
    "s": 72.414,
    "l": 17.059
  },
  "oklch": {
    "l": 0.22764,
    "c": 0.10738,
    "h": 284.9
  },
  "luminance": 0.01004
}

Semantic roles & 50–950 ramp

primary

#1B0C4B

secondary

#71872C

accent

#EF39C4

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #1B0C4B

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

Preview Lab → · Contrast checker → · Palette generator →