#1B043A#1B043A

#1B043A is a very dark, moderate violet. Relative luminance 0.006; OKLCH L 19.6% C 0.096 H 296.0°. Best body text is #FFFFFF at 18.67:1 contrast (WCAG AA passes).

Color values

HEX	#1B043A
RGB	rgb(27, 4, 58)
HSL	hsl(266, 87%, 12%)
HSV	hsv(266, 93%, 23%)
CMYK	cmyk(53.4%, 93.1%, 0%, 77.3%)
CIE-LAB	lab(5.65, 24.99, -29.47)
CIE-LCH	lch(5.65, 38.64, 310.29°)
OKLab	oklab(19.63% 0.0419 -0.0859)
OKLCH	oklch(19.63% 0.096 296)
XYZ	xyz(1.2589, 0.6253, 4.0565)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B043A #233A04

analogous

#04083A #1B043A #36043A

triadic

#1B043A #3A1B04 #043A1B

tetradic

#1B043A #3A0408 #233A04 #043A36

square

#1B043A #3A0408 #233A04 #043A36

split-complementary

#1B043A #3A3604 #083A04

monochromatic

#0D021D #0D021D #1B043A #360873 #500CAD

Accessibility & contrast

On white

18.67

#1B043A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#1B043A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B043A

18.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B043A	#FFFFFF	#000000	##FFFFFF
##1B043A	1.00	18.67	1.13	18.67
#FFFFFF	18.67	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00133B

Deuteranopia (green-blind)

#001239

Tritanopia (blue-blind)

#12131F

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #1b043a;
/* rgb */ color: rgb(27, 4, 58);
/* oklch */ color: oklch(19.6% 0.096 296.0);

Tailwind

colors: {
  custom: {
    50: '#5b4771',
    500: '#1b043a',
    950: '#000000',
  },
}

SCSS

$custom: #1b043a;
$custom-light: #5b4771;
$custom-dark: #000000;

JSON

{
  "hex": "#1b043a",
  "rgb": {
    "r": 27,
    "g": 4,
    "b": 58
  },
  "hsl": {
    "h": 265.556,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.19634,
    "c": 0.09556,
    "h": 296
  },
  "luminance": 0.00625
}

Semantic roles & 50–950 ramp

primary

#1B043A

secondary

#547C1E

accent

#FD2BA4

background

#F5F4F6

surface

#E9E6EC

border

#C5C2C7

text

#040007

muted

#79777A

Preview Lab

Preview with #1B043A

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

Preview Lab → · Contrast checker → · Palette generator →