#1B104D#1B104D

#1B104D is a very dark, moderate violet. Relative luminance 0.011; OKLCH L 23.6% C 0.105 H 283.0°. Best body text is #FFFFFF at 17.10:1 contrast (WCAG AA passes).

Color values

HEX	#1B104D
RGB	rgb(27, 16, 77)
HSL	hsl(251, 66%, 18%)
HSV	hsv(251, 79%, 30%)
CMYK	cmyk(64.9%, 79.2%, 0%, 69.8%)
CIE-LAB	lab(10.10, 24.99, -35.63)
CIE-LCH	lch(10.10, 43.52, 305.04°)
OKLab	oklab(23.59% 0.0237 -0.1026)
OKLCH	oklch(23.59% 0.105 283)
XYZ	xyz(1.9764, 1.1393, 7.1355)
Luminance	0.0114 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.01

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B104D #424D10

analogous

#10234D #1B104D #39104D

triadic

#1B104D #4D1B10 #104D1B

tetradic

#1B104D #4D1023 #424D10 #104D39

square

#1B104D #4D1023 #424D10 #104D39

split-complementary

#1B104D #4D3910 #234D10

monochromatic

#090519 #09051A #1B104D #2D1B80 #3F25B2

Accessibility & contrast

On white

17.10

#1B104D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#1B104D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B104D

17.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B104D	#FFFFFF	#000000	##FFFFFF
##1B104D	1.00	17.10	1.23	17.10
#FFFFFF	17.10	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E4F

Deuteranopia (green-blind)

#001A4C

Tritanopia (blue-blind)

#00212D

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #1b104d;
/* rgb */ color: rgb(27, 16, 77);
/* oklch */ color: oklch(23.6% 0.105 283.0);

Tailwind

colors: {
  custom: {
    50: '#5f4f7f',
    500: '#1b104d',
    950: '#000000',
  },
}

SCSS

$custom: #1b104d;
$custom-light: #5f4f7f;
$custom-dark: #000000;

JSON

{
  "hex": "#1b104d",
  "rgb": {
    "r": 27,
    "g": 16,
    "b": 77
  },
  "hsl": {
    "h": 250.82,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.23592,
    "c": 0.10535,
    "h": 283
  },
  "luminance": 0.01139
}

Semantic roles & 50–950 ramp

primary

#1B104D

secondary

#788732

accent

#E93FCA

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #1B104D

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

Preview Lab → · Contrast checker → · Palette generator →