#1B0437#1B0437

#1B0437 is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 19.3% C 0.092 H 298.0°. Best body text is #FFFFFF at 18.76:1 contrast (WCAG AA passes).

Color values

HEX	#1B0437
RGB	rgb(27, 4, 55)
HSL	hsl(267, 86%, 12%)
HSV	hsv(267, 93%, 22%)
CMYK	cmyk(50.9%, 92.7%, 0%, 78.4%)
CIE-LAB	lab(5.38, 23.77, -27.72)
CIE-LCH	lch(5.38, 36.52, 310.62°)
OKLab	oklab(19.29% 0.0431 -0.0811)
OKLCH	oklch(19.29% 0.092 298)
XYZ	xyz(1.1848, 0.5957, 3.6662)
Luminance	0.0060 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0437 #203704

analogous

#040637 #1B0437 #350437

triadic

#1B0437 #371B04 #04371B

tetradic

#1B0437 #370406 #203704 #043735

square

#1B0437 #370406 #203704 #043735

split-complementary

#1B0437 #373504 #063704

monochromatic

#0E021D #0E021D #1B0437 #370870 #530CA9

Accessibility & contrast

On white

18.76

#1B0437 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#1B0437 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0437

18.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0437	#FFFFFF	#000000	##FFFFFF
##1B0437	1.00	18.76	1.12	18.76
#FFFFFF	18.76	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001238

Deuteranopia (green-blind)

#001136

Tritanopia (blue-blind)

#14121D

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #1b0437;
/* rgb */ color: rgb(27, 4, 55);
/* oklch */ color: oklch(19.3% 0.092 298.0);

Tailwind

colors: {
  custom: {
    50: '#5b476e',
    500: '#1b0437',
    950: '#000000',
  },
}

SCSS

$custom: #1b0437;
$custom-light: #5b476e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0437",
  "rgb": {
    "r": 27,
    "g": 4,
    "b": 55
  },
  "hsl": {
    "h": 267.059,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.19293,
    "c": 0.09189,
    "h": 298
  },
  "luminance": 0.00596
}

Semantic roles & 50–950 ramp

primary

#1B0437

secondary

#50791E

accent

#FD2B9E

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040007

muted

#79777A

Preview Lab

Preview with #1B0437

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

Preview Lab → · Contrast checker → · Palette generator →