#1B103A#1B103A

#1B103A is a very dark, moderate violet. Relative luminance 0.009; OKLCH L 21.6% C 0.077 H 290.5°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#1B103A
RGB	rgb(27, 16, 58)
HSL	hsl(256, 57%, 15%)
HSV	hsv(256, 72%, 23%)
CMYK	cmyk(53.4%, 72.4%, 0%, 77.3%)
CIE-LAB	lab(8.21, 18.24, -25.32)
CIE-LCH	lch(8.21, 31.20, 305.77°)
OKLab	oklab(21.65% 0.0271 -0.0724)
OKLCH	oklch(21.65% 0.077 290.5)
XYZ	xyz(1.4008, 0.9090, 4.1038)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B103A #2F3A10

analogous

#101A3A #1B103A #30103A

triadic

#1B103A #3A1B10 #103A1B

tetradic

#1B103A #3A101A #2F3A10 #103A30

square

#1B103A #3A101A #2F3A10 #103A30

split-complementary

#1B103A #3A3010 #1A3A10

monochromatic

#0B0718 #0B0718 #1B103A #311D6A #482A9A

Accessibility & contrast

On white

17.77

#1B103A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#1B103A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B103A

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B103A	#FFFFFF	#000000	##FFFFFF
##1B103A	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193B

Deuteranopia (green-blind)

#001739

Tritanopia (blue-blind)

#111A23

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #1b103a;
/* rgb */ color: rgb(27, 16, 58);
/* oklch */ color: oklch(21.6% 0.077 290.5);

Tailwind

colors: {
  custom: {
    50: '#5b4e70',
    500: '#1b103a',
    950: '#000000',
  },
}

SCSS

$custom: #1b103a;
$custom-light: #5b4e70;
$custom-dark: #000000;

JSON

{
  "hex": "#1b103a",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 58
  },
  "hsl": {
    "h": 255.714,
    "s": 56.757,
    "l": 14.51
  },
  "oklch": {
    "l": 0.21647,
    "c": 0.07729,
    "h": 290.5
  },
  "luminance": 0.00909
}

Semantic roles & 50–950 ramp

primary

#1B103A

secondary

#637432

accent

#E048B8

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#040107

muted

#79777A

Preview Lab

Preview with #1B103A

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

Preview Lab → · Contrast checker → · Palette generator →