#1B0B4D#1B0B4D

#1B0B4D is a very dark, moderate violet. Relative luminance 0.010; OKLCH L 22.9% C 0.111 H 284.5°. Best body text is #FFFFFF at 17.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B0B4D
RGB	rgb(27, 11, 77)
HSL	hsl(255, 75%, 17%)
HSV	hsv(255, 86%, 30%)
CMYK	cmyk(64.9%, 85.7%, 0%, 69.8%)
CIE-LAB	lab(9.06, 27.94, -37.35)
CIE-LCH	lch(9.06, 46.64, 306.80°)
OKLab	oklab(22.86% 0.0278 -0.1076)
OKLCH	oklch(22.86% 0.111 284.5)
XYZ	xyz(1.9108, 1.0081, 7.1136)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.46

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0B4D #3D4D0B

analogous

#0B1C4D #1B0B4D #3C0B4D

triadic

#1B0B4D #4D1B0B #0B4D1B

tetradic

#1B0B4D #4D0B1C #3D4D0B #0B4D3C

square

#1B0B4D #4D0B1C #3D4D0B #0B4D3C

split-complementary

#1B0B4D #4D3C0B #1C4D0B

monochromatic

#09041B #09041B #1B0B4D #2E1383 #411AB8

Accessibility & contrast

On white

17.48

#1B0B4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#1B0B4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0B4D

17.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0B4D	#FFFFFF	#000000	##FFFFFF
##1B0B4D	1.00	17.48	1.20	17.48
#FFFFFF	17.48	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4F

Deuteranopia (green-blind)

#00174C

Tritanopia (blue-blind)

#011E2C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #1b0b4d;
/* rgb */ color: rgb(27, 11, 77);
/* oklch */ color: oklch(22.9% 0.111 284.5);

Tailwind

colors: {
  custom: {
    50: '#5f4c80',
    500: '#1b0b4d',
    950: '#000000',
  },
}

SCSS

$custom: #1b0b4d;
$custom-light: #5f4c80;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0b4d",
  "rgb": {
    "r": 27,
    "g": 11,
    "b": 77
  },
  "hsl": {
    "h": 254.545,
    "s": 75,
    "l": 17.255
  },
  "oklch": {
    "l": 0.22858,
    "c": 0.11117,
    "h": 284.5
  },
  "luminance": 0.01008
}

Semantic roles & 50–950 ramp

primary

#1B0B4D

secondary

#72892B

accent

#F236C4

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #1B0B4D

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

Preview Lab → · Contrast checker → · Palette generator →