#1B0440#1B0440

#1B0440 is a very dark, moderate violet. Relative luminance 0.007; OKLCH L 20.3% C 0.103 H 292.4°. Best body text is #FFFFFF at 18.45:1 contrast (WCAG AA passes).

Color values

HEX	#1B0440
RGB	rgb(27, 4, 64)
HSL	hsl(263, 88%, 13%)
HSV	hsv(263, 94%, 25%)
CMYK	cmyk(57.8%, 93.8%, 0%, 74.9%)
CIE-LAB	lab(6.23, 27.33, -32.84)
CIE-LCH	lch(6.23, 42.73, 309.77°)
OKLab	oklab(20.34% 0.0392 -0.0951)
OKLCH	oklch(20.34% 0.103 292.4)
XYZ	xyz(1.4206, 0.6900, 4.9078)
Luminance	0.0069 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0440 #294004

analogous

#040B40 #1B0440 #390440

triadic

#1B0440 #401B04 #04401B

tetradic

#1B0440 #40040B #294004 #044039

square

#1B0440 #40040B #294004 #044039

split-complementary

#1B0440 #403904 #0B4004

monochromatic

#0C021D #0C021D #1B0440 #33087A #4C0BB3

Accessibility & contrast

On white

18.45

#1B0440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#1B0440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0440

18.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0440	#FFFFFF	#000000	##FFFFFF
##1B0440	1.00	18.45	1.14	18.45
#FFFFFF	18.45	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001542

Deuteranopia (green-blind)

#00133F

Tritanopia (blue-blind)

#0E1623

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #1b0440;
/* rgb */ color: rgb(27, 4, 64);
/* oklch */ color: oklch(20.3% 0.103 292.4);

Tailwind

colors: {
  custom: {
    50: '#5d4775',
    500: '#1b0440',
    950: '#000000',
  },
}

SCSS

$custom: #1b0440;
$custom-light: #5d4775;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0440",
  "rgb": {
    "r": 27,
    "g": 4,
    "b": 64
  },
  "hsl": {
    "h": 263,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.20338,
    "c": 0.10287,
    "h": 292.4
  },
  "luminance": 0.0069
}

Semantic roles & 50–950 ramp

primary

#1B0440

secondary

#5B811F

accent

#FE29AD

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#040008

muted

#79777B

Preview Lab

Preview with #1B0440

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

Preview Lab → · Contrast checker → · Palette generator →