#1B0537#1B0537

#1B0537 is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 19.5% C 0.090 H 297.6°. Best body text is #FFFFFF at 18.69:1 contrast (WCAG AA passes).

Color values

HEX	#1B0537
RGB	rgb(27, 5, 55)
HSL	hsl(266, 83%, 12%)
HSV	hsv(266, 91%, 22%)
CMYK	cmyk(50.9%, 90.9%, 0%, 78.4%)
CIE-LAB	lab(5.58, 23.28, -27.40)
CIE-LCH	lch(5.58, 35.96, 310.35°)
OKLab	oklab(19.47% 0.0417 -0.0799)
OKLCH	oklch(19.47% 0.09 297.6)
XYZ	xyz(1.1957, 0.6174, 3.6699)
Luminance	0.0062 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0537 #213705

analogous

#050837 #1B0537 #340537

triadic

#1B0537 #371B05 #05371B

tetradic

#1B0537 #370508 #213705 #053734

square

#1B0537 #370508 #213705 #053734

split-complementary

#1B0537 #373405 #083705

monochromatic

#0E031C #0E031C #1B0537 #370A6F #520FA7

Accessibility & contrast

On white

18.69

#1B0537 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#1B0537 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0537

18.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0537	#FFFFFF	#000000	##FFFFFF
##1B0537	1.00	18.69	1.12	18.69
#FFFFFF	18.69	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001238

Deuteranopia (green-blind)

#001236

Tritanopia (blue-blind)

#14121E

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #1b0537;
/* rgb */ color: rgb(27, 5, 55);
/* oklch */ color: oklch(19.5% 0.090 297.6);

Tailwind

colors: {
  custom: {
    50: '#5b486e',
    500: '#1b0537',
    950: '#000000',
  },
}

SCSS

$custom: #1b0537;
$custom-light: #5b486e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0537",
  "rgb": {
    "r": 27,
    "g": 5,
    "b": 55
  },
  "hsl": {
    "h": 266.4,
    "s": 83.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.19468,
    "c": 0.09018,
    "h": 297.6
  },
  "luminance": 0.00617
}

Semantic roles & 50–950 ramp

primary

#1B0537

secondary

#517820

accent

#FA2EA0

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040007

muted

#79777A

Preview Lab

Preview with #1B0537

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

Preview Lab → · Contrast checker → · Palette generator →