#12105B#12105B

#12105B is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.5% C 0.127 H 273.0°. Best body text is #FFFFFF at 16.79:1 contrast (WCAG AA passes).

Color values

HEX	#12105B
RGB	rgb(18, 16, 91)
HSL	hsl(242, 70%, 21%)
HSV	hsv(242, 82%, 36%)
CMYK	cmyk(80.2%, 82.4%, 0%, 64.3%)
CIE-LAB	lab(10.95, 28.92, -43.81)
CIE-LCH	lch(10.95, 52.49, 303.43°)
OKLab	oklab(24.48% 0.0065 -0.1268)
OKLCH	oklch(24.48% 0.127 273)
XYZ	xyz(2.3224, 1.2543, 10.0152)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12105B #595B10

analogous

#10335B #12105B #37105B

triadic

#12105B #5B1210 #105B12

tetradic

#12105B #5B1033 #595B10 #105B37

square

#12105B #5B1033 #595B10 #105B37

split-complementary

#12105B #5B3710 #335B10

monochromatic

#05051A #080727 #12105B #1C198F #2722C3

Accessibility & contrast

On white

16.79

#12105B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#12105B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12105B

16.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12105B	#FFFFFF	#000000	##FFFFFF
##12105B	1.00	16.79	1.25	16.79
#FFFFFF	16.79	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215D

Deuteranopia (green-blind)

#001A5A

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #12105b;
/* rgb */ color: rgb(18, 16, 91);
/* oklch */ color: oklch(24.5% 0.127 273.0);

Tailwind

colors: {
  custom: {
    50: '#5e4f8a',
    500: '#12105b',
    950: '#000000',
  },
}

SCSS

$custom: #12105b;
$custom-light: #5e4f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#12105b",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 91
  },
  "hsl": {
    "h": 241.6,
    "s": 70.093,
    "l": 20.98
  },
  "oklch": {
    "l": 0.24481,
    "c": 0.12695,
    "h": 273
  },
  "luminance": 0.01255
}

Semantic roles & 50–950 ramp

primary

#12105B

secondary

#929433

accent

#ED3BE8

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020C

muted

#79787D

Preview Lab

Preview with #12105B

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

Preview Lab → · Contrast checker → · Palette generator →