#12104B#12104B

#12104B is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.6% C 0.105 H 275.5°. Best body text is #FFFFFF at 17.48:1 contrast (WCAG AA passes).

Color values

HEX	#12104B
RGB	rgb(18, 16, 75)
HSL	hsl(242, 65%, 18%)
HSV	hsv(242, 79%, 29%)
CMYK	cmyk(76%, 78.7%, 0%, 70.6%)
CIE-LAB	lab(9.05, 22.90, -36.00)
CIE-LCH	lch(9.05, 42.67, 302.45°)
OKLab	oklab(22.57% 0.01 -0.104)
OKLCH	oklch(22.57% 0.105 275.5)
XYZ	xyz(1.7043, 1.0070, 6.7598)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12104B #494B10

analogous

#102B4B #12104B #2F104B

triadic

#12104B #4B1210 #104B12

tetradic

#12104B #4B102B #494B10 #104B2F

square

#12104B #4B102B #494B10 #104B2F

split-complementary

#12104B #4B2F10 #2B4B10

monochromatic

#060519 #060519 #12104B #1E1B7D #2A26B0

Accessibility & contrast

On white

17.48

#12104B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#12104B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12104B

17.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12104B	#FFFFFF	#000000	##FFFFFF
##12104B	1.00	17.48	1.20	17.48
#FFFFFF	17.48	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4D

Deuteranopia (green-blind)

#00174A

Tritanopia (blue-blind)

#00202C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #12104b;
/* rgb */ color: rgb(18, 16, 75);
/* oklch */ color: oklch(22.6% 0.105 275.5);

Tailwind

colors: {
  custom: {
    50: '#5a4e7e',
    500: '#12104b',
    950: '#000000',
  },
}

SCSS

$custom: #12104b;
$custom-light: #5a4e7e;
$custom-dark: #000000;

JSON

{
  "hex": "#12104b",
  "rgb": {
    "r": 18,
    "g": 16,
    "b": 75
  },
  "hsl": {
    "h": 242.034,
    "s": 64.835,
    "l": 17.843
  },
  "oklch": {
    "l": 0.22566,
    "c": 0.10452,
    "h": 275.5
  },
  "luminance": 0.01007
}

Semantic roles & 50–950 ramp

primary

#12104B

secondary

#828532

accent

#E840E2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #12104B

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

Preview Lab → · Contrast checker → · Palette generator →