#1B043B#1B043B

#1B043B is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 19.8% C 0.097 H 295.3°. Best body text is #FFFFFF at 18.63:1 contrast (WCAG AA passes).

Color values

HEX	#1B043B
RGB	rgb(27, 4, 59)
HSL	hsl(265, 87%, 12%)
HSV	hsv(265, 93%, 23%)
CMYK	cmyk(54.2%, 93.2%, 0%, 76.9%)
CIE-LAB	lab(5.74, 25.39, -30.05)
CIE-LCH	lch(5.74, 39.34, 310.20°)
OKLab	oklab(19.75% 0.0414 -0.0875)
OKLCH	oklch(19.75% 0.097 295.3)
XYZ	xyz(1.2846, 0.6356, 4.1918)
Luminance	0.0064 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B043B #243B04

analogous

#04083B #1B043B #37043B

triadic

#1B043B #3B1B04 #043B1B

tetradic

#1B043B #3B0408 #243B04 #043B37

square

#1B043B #3B0408 #243B04 #043B37

split-complementary

#1B043B #3B3704 #083B04

monochromatic

#0D021D #0D021D #1B043B #350874 #4F0CAE

Accessibility & contrast

On white

18.63

#1B043B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#1B043B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B043B

18.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B043B	#FFFFFF	#000000	##FFFFFF
##1B043B	1.00	18.63	1.13	18.63
#FFFFFF	18.63	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133C

Deuteranopia (green-blind)

#00123A

Tritanopia (blue-blind)

#121320

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #1b043b;
/* rgb */ color: rgb(27, 4, 59);
/* oklch */ color: oklch(19.8% 0.097 295.3);

Tailwind

colors: {
  custom: {
    50: '#5c4771',
    500: '#1b043b',
    950: '#000000',
  },
}

SCSS

$custom: #1b043b;
$custom-light: #5c4771;
$custom-dark: #000000;

JSON

{
  "hex": "#1b043b",
  "rgb": {
    "r": 27,
    "g": 4,
    "b": 59
  },
  "hsl": {
    "h": 265.091,
    "s": 87.302,
    "l": 12.353
  },
  "oklch": {
    "l": 0.1975,
    "c": 0.09677,
    "h": 295.3
  },
  "luminance": 0.00636
}

Semantic roles & 50–950 ramp

primary

#1B043B

secondary

#557D1E

accent

#FD2AA5

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040008

muted

#79777B

Preview Lab

Preview with #1B043B

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

Preview Lab → · Contrast checker → · Palette generator →