#12173D#12173D

#12173D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.6% C 0.072 H 273.5°. Best body text is #FFFFFF at 17.28:1 contrast (WCAG AA passes).

Color values

HEX	#12173D
RGB	rgb(18, 23, 61)
HSL	hsl(233, 54%, 15%)
HSV	hsv(233, 70%, 24%)
CMYK	cmyk(70.5%, 62.3%, 0%, 76.1%)
CIE-LAB	lab(9.63, 12.04, -25.21)
CIE-LCH	lch(9.63, 27.94, 295.54°)
OKLab	oklab(22.56% 0.0044 -0.0723)
OKLCH	oklch(22.56% 0.072 273.5)
XYZ	xyz(1.3979, 1.0782, 4.5484)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12173D #3D3812

analogous

#122C3D #12173D #22123D

triadic

#12173D #3D1217 #173D12

tetradic

#12173D #3D122C #3D3812 #123D22

square

#12173D #3D122C #3D3812 #123D22

split-complementary

#12173D #3D2212 #2C3D12

monochromatic

#070918 #070918 #12173D #20296C #2E3B9C

Accessibility & contrast

On white

17.28

#12173D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#12173D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12173D

17.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12173D	#FFFFFF	#000000	##FFFFFF
##12173D	1.00	17.28	1.22	17.28
#FFFFFF	17.28	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011D3E

Deuteranopia (green-blind)

#00193C

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #12173d;
/* rgb */ color: rgb(18, 23, 61);
/* oklch */ color: oklch(22.6% 0.072 273.5);

Tailwind

colors: {
  custom: {
    50: '#555373',
    500: '#12173d',
    950: '#000000',
  },
}

SCSS

$custom: #12173d;
$custom-light: #555373;
$custom-dark: #000000;

JSON

{
  "hex": "#12173d",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 61
  },
  "hsl": {
    "h": 233.023,
    "s": 54.43,
    "l": 15.49
  },
  "oklch": {
    "l": 0.22558,
    "c": 0.07247,
    "h": 273.5
  },
  "luminance": 0.01078
}

Semantic roles & 50–950 ramp

primary

#12173D

secondary

#766E35

accent

#CD4ADE

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #12173D

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

Preview Lab → · Contrast checker → · Palette generator →