#1B0B4E#1B0B4E

#1B0B4E is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 23.0% C 0.112 H 284.1°. Best body text is #FFFFFF at 17.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B0B4E
RGB	rgb(27, 11, 78)
HSL	hsl(254, 75%, 17%)
HSV	hsv(254, 86%, 31%)
CMYK	cmyk(65.4%, 85.9%, 0%, 69.4%)
CIE-LAB	lab(9.18, 28.28, -37.85)
CIE-LCH	lch(9.18, 47.24, 306.77°)
OKLab	oklab(22.98% 0.0275 -0.1091)
OKLCH	oklch(22.98% 0.112 284.1)
XYZ	xyz(1.9464, 1.0223, 7.3010)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0B4E #3E4E0B

analogous

#0B1D4E #1B0B4E #3C0B4E

triadic

#1B0B4E #4E1B0B #0B4E1B

tetradic

#1B0B4E #4E0B1D #3E4E0B #0B4E3C

square

#1B0B4E #4E0B1D #3E4E0B #0B4E3C

split-complementary

#1B0B4E #4E3C0B #1D4E0B

monochromatic

#09041B #09041B #1B0B4E #2E1384 #401AB9

Accessibility & contrast

On white

17.44

#1B0B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#1B0B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0B4E

17.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0B4E	#FFFFFF	#000000	##FFFFFF
##1B0B4E	1.00	17.44	1.20	17.44
#FFFFFF	17.44	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C50

Deuteranopia (green-blind)

#00184D

Tritanopia (blue-blind)

#001F2C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #1b0b4e;
/* rgb */ color: rgb(27, 11, 78);
/* oklch */ color: oklch(23.0% 0.112 284.1);

Tailwind

colors: {
  custom: {
    50: '#5f4c80',
    500: '#1b0b4e',
    950: '#000000',
  },
}

SCSS

$custom: #1b0b4e;
$custom-light: #5f4c80;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0b4e",
  "rgb": {
    "r": 27,
    "g": 11,
    "b": 78
  },
  "hsl": {
    "h": 254.328,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.22975,
    "c": 0.11249,
    "h": 284.1
  },
  "luminance": 0.01022
}

Semantic roles & 50–950 ramp

primary

#1B0B4E

secondary

#738A2B

accent

#F236C5

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #1B0B4E

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

Preview Lab → · Contrast checker → · Palette generator →