#1B042F#1B042F

#1B042F is a very dark, moderate violet. Relative luminance 0.005; OKLCH L 18.4% C 0.082 H 304.2°. Best body text is #FFFFFF at 19.00:1 contrast (WCAG AA passes).

Color values

HEX	#1B042F
RGB	rgb(27, 4, 47)
HSL	hsl(272, 84%, 10%)
HSV	hsv(272, 91%, 18%)
CMYK	cmyk(42.6%, 91.5%, 0%, 81.6%)
CIE-LAB	lab(4.74, 20.46, -22.82)
CIE-LCH	lch(4.74, 30.65, 311.87°)
OKLab	oklab(18.43% 0.0461 -0.0679)
OKLCH	oklch(18.43% 0.082 304.2)
XYZ	xyz(1.0084, 0.5251, 2.7370)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B042F #182F04

analogous

#05042F #1B042F #2F042E

triadic

#1B042F #2F1B04 #042F1B

tetradic

#1B042F #2F0504 #182F04 #042E2F

square

#1B042F #2F0504 #182F04 #042E2F

split-complementary

#1B042F #2E2F04 #042F05

monochromatic

#10021C #10021C #1B042F #3B0967 #5C0EA0

Accessibility & contrast

On white

19.00

#1B042F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#1B042F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B042F

19.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B042F	#FFFFFF	#000000	##FFFFFF
##1B042F	1.00	19.00	1.11	19.00
#FFFFFF	19.00	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	19.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001030

Deuteranopia (green-blind)

#00102E

Tritanopia (blue-blind)

#170E19

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #1b042f;
/* rgb */ color: rgb(27, 4, 47);
/* oklch */ color: oklch(18.4% 0.082 304.2);

Tailwind

colors: {
  custom: {
    50: '#594868',
    500: '#1b042f',
    950: '#000000',
  },
}

SCSS

$custom: #1b042f;
$custom-light: #594868;
$custom-dark: #000000;

JSON

{
  "hex": "#1b042f",
  "rgb": {
    "r": 27,
    "g": 4,
    "b": 47
  },
  "hsl": {
    "h": 272.093,
    "s": 84.314,
    "l": 10
  },
  "oklch": {
    "l": 0.18426,
    "c": 0.08211,
    "h": 304.2
  },
  "luminance": 0.00525
}

Semantic roles & 50–950 ramp

primary

#1B042F

secondary

#44721D

accent

#FB2D8D

background

#F5F4F6

surface

#E9E6EB

border

#C5C2C6

text

#040006

muted

#79777A

Preview Lab

Preview with #1B042F

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

Preview Lab → · Contrast checker → · Palette generator →