#12173C#12173C

#12173C is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.5% C 0.071 H 273.5°. Best body text is #FFFFFF at 17.30:1 contrast (WCAG AA passes).

Color values

HEX	#12173C
RGB	rgb(18, 23, 60)
HSL	hsl(233, 54%, 15%)
HSV	hsv(233, 70%, 24%)
CMYK	cmyk(70%, 61.7%, 0%, 76.5%)
CIE-LAB	lab(9.54, 11.63, -24.64)
CIE-LCH	lch(9.54, 27.24, 295.26°)
OKLab	oklab(22.47% 0.0043 -0.0706)
OKLCH	oklch(22.47% 0.071 273.5)
XYZ	xyz(1.3712, 1.0675, 4.4079)
Luminance	0.0107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12173C #3C3712

analogous

#122C3C #12173C #22123C

triadic

#12173C #3C1217 #173C12

tetradic

#12173C #3C122C #3C3712 #123C22

square

#12173C #3C122C #3C3712 #123C22

split-complementary

#12173C #3C2212 #2C3C12

monochromatic

#070918 #070918 #12173C #20296B #2E3B9A

Accessibility & contrast

On white

17.30

#12173C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#12173C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12173C

17.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12173C	#FFFFFF	#000000	##FFFFFF
##12173C	1.00	17.30	1.21	17.30
#FFFFFF	17.30	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021C3D

Deuteranopia (green-blind)

#00193B

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #12173c;
/* rgb */ color: rgb(18, 23, 60);
/* oklch */ color: oklch(22.5% 0.071 273.5);

Tailwind

colors: {
  custom: {
    50: '#555372',
    500: '#12173c',
    950: '#000000',
  },
}

SCSS

$custom: #12173c;
$custom-light: #555372;
$custom-dark: #000000;

JSON

{
  "hex": "#12173c",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 60
  },
  "hsl": {
    "h": 232.857,
    "s": 53.846,
    "l": 15.294
  },
  "oklch": {
    "l": 0.22468,
    "c": 0.07078,
    "h": 273.5
  },
  "luminance": 0.01068
}

Semantic roles & 50–950 ramp

primary

#12173C

secondary

#756D35

accent

#CC4BDD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #12173C

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

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