#1B0B4B#1B0B4B

#1B0B4B is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.6% C 0.108 H 285.2°. Best body text is #FFFFFF at 17.56:1 contrast (WCAG AA passes).

Color values

HEX	#1B0B4B
RGB	rgb(27, 11, 75)
HSL	hsl(255, 74%, 17%)
HSV	hsv(255, 85%, 29%)
CMYK	cmyk(64%, 85.3%, 0%, 70.6%)
CIE-LAB	lab(8.83, 27.28, -36.34)
CIE-LCH	lch(8.83, 45.44, 306.89°)
OKLab	oklab(22.63% 0.0285 -0.1047)
OKLCH	oklch(22.63% 0.109 285.2)
XYZ	xyz(1.8413, 0.9802, 6.7474)
Luminance	0.0098 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.23

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0B4B #3B4B0B

analogous

#0B1B4B #1B0B4B #3B0B4B

triadic

#1B0B4B #4B1B0B #0B4B1B

tetradic

#1B0B4B #4B0B1B #3B4B0B #0B4B3B

square

#1B0B4B #4B0B1B #3B4B0B #0B4B3B

split-complementary

#1B0B4B #4B3B0B #1B4B0B

monochromatic

#0A041B #0A041B #1B0B4B #2E1380 #411BB6

Accessibility & contrast

On white

17.56

#1B0B4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#1B0B4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0B4B

17.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0B4B	#FFFFFF	#000000	##FFFFFF
##1B0B4B	1.00	17.56	1.20	17.56
#FFFFFF	17.56	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4D

Deuteranopia (green-blind)

#00174A

Tritanopia (blue-blind)

#031E2B

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #1b0b4b;
/* rgb */ color: rgb(27, 11, 75);
/* oklch */ color: oklch(22.6% 0.108 285.2);

Tailwind

colors: {
  custom: {
    50: '#5f4c7e',
    500: '#1b0b4b',
    950: '#000000',
  },
}

SCSS

$custom: #1b0b4b;
$custom-light: #5f4c7e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0b4b",
  "rgb": {
    "r": 27,
    "g": 11,
    "b": 75
  },
  "hsl": {
    "h": 255,
    "s": 74.419,
    "l": 16.863
  },
  "oklch": {
    "l": 0.22626,
    "c": 0.1085,
    "h": 285.2
  },
  "luminance": 0.0098
}

Semantic roles & 50–950 ramp

primary

#1B0B4B

secondary

#70872B

accent

#F137C2

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #1B0B4B

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

Preview Lab → · Contrast checker → · Palette generator →