#1B104C#1B104C

#1B104C is a very dark, moderate violet. Relative luminance 0.011; OKLCH L 23.5% C 0.104 H 283.3°. Best body text is #FFFFFF at 17.14:1 contrast (WCAG AA passes).

Color values

HEX	#1B104C
RGB	rgb(27, 16, 76)
HSL	hsl(251, 65%, 18%)
HSV	hsv(251, 79%, 30%)
CMYK	cmyk(64.5%, 78.9%, 0%, 70.2%)
CIE-LAB	lab(9.99, 24.63, -35.11)
CIE-LCH	lch(9.99, 42.89, 305.05°)
OKLab	oklab(23.48% 0.024 -0.1011)
OKLCH	oklch(23.48% 0.104 283.3)
XYZ	xyz(1.9414, 1.1253, 6.9510)
Luminance	0.0112 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B104C #414C10

analogous

#10234C #1B104C #39104C

triadic

#1B104C #4C1B10 #104C1B

tetradic

#1B104C #4C1023 #414C10 #104C39

square

#1B104C #4C1023 #414C10 #104C39

split-complementary

#1B104C #4C3910 #234C10

monochromatic

#090519 #090519 #1B104C #2D1B7F #3F25B1

Accessibility & contrast

On white

17.14

#1B104C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#1B104C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B104C

17.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B104C	#FFFFFF	#000000	##FFFFFF
##1B104C	1.00	17.14	1.22	17.14
#FFFFFF	17.14	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D4E

Deuteranopia (green-blind)

#00194B

Tritanopia (blue-blind)

#01202C

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #1b104c;
/* rgb */ color: rgb(27, 16, 76);
/* oklch */ color: oklch(23.5% 0.104 283.3);

Tailwind

colors: {
  custom: {
    50: '#5e4f7f',
    500: '#1b104c',
    950: '#000000',
  },
}

SCSS

$custom: #1b104c;
$custom-light: #5e4f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b104c",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 76
  },
  "hsl": {
    "h": 251,
    "s": 65.217,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23483,
    "c": 0.10394,
    "h": 283.3
  },
  "luminance": 0.01125
}

Semantic roles & 50–950 ramp

primary

#1B104C

secondary

#768632

accent

#E840C9

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B104C

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

Preview Lab → · Contrast checker → · Palette generator →