#1B0131#1B0131

#1B0131 is a very dark, moderate violet. Relative luminance 0.005; OKLCH L 18.0% C 0.091 H 303.9°. Best body text is #FFFFFF at 19.17:1 contrast (WCAG AA passes).

Color values

HEX	#1B0131
RGB	rgb(27, 1, 49)
HSL	hsl(273, 96%, 10%)
HSV	hsv(273, 98%, 19%)
CMYK	cmyk(44.9%, 98%, 0%, 80.8%)
CIE-LAB	lab(4.30, 22.66, -25.02)
CIE-LCH	lch(4.30, 33.76, 312.17°)
OKLab	oklab(18.05% 0.0507 -0.0753)
OKLCH	oklch(18.05% 0.091 303.9)
XYZ	xyz(1.0171, 0.4765, 2.9435)
Luminance	0.0048 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B0131 #173101

analogous

#030131 #1B0131 #31012F

triadic

#1B0131 #311B01 #01311B

tetradic

#1B0131 #310301 #173101 #012F31

square

#1B0131 #310301 #173101 #012F31

split-complementary

#1B0131 #2F3101 #013103

monochromatic

#11011E #11011E #1B0131 #3C026D #5D03A9

Accessibility & contrast

On white

19.17

#1B0131 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#1B0131 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B0131

19.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B0131	#FFFFFF	#000000	##FFFFFF
##1B0131	1.00	19.17	1.10	19.17
#FFFFFF	19.17	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E32

Deuteranopia (green-blind)

#000F30

Tritanopia (blue-blind)

#160D19

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #1b0131;
/* rgb */ color: rgb(27, 1, 49);
/* oklch */ color: oklch(18.0% 0.091 303.9);

Tailwind

colors: {
  custom: {
    50: '#594669',
    500: '#1b0131',
    950: '#000000',
  },
}

SCSS

$custom: #1b0131;
$custom-light: #594669;
$custom-dark: #000000;

JSON

{
  "hex": "#1b0131",
  "rgb": {
    "r": 27,
    "g": 1,
    "b": 49
  },
  "hsl": {
    "h": 272.5,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.18049,
    "c": 0.09077,
    "h": 303.9
  },
  "luminance": 0.00476
}

Semantic roles & 50–950 ramp

primary

#1B0131

secondary

#437717

accent

#FF298B

background

#F5F3F6

surface

#E9E5EB

border

#C5C1C6

text

#040006

muted

#79777A

Preview Lab

Preview with #1B0131

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

Preview Lab → · Contrast checker → · Palette generator →