#12183C#12183C

#12183C is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.7% C 0.069 H 272.6°. Best body text is #FFFFFF at 17.19:1 contrast (WCAG AA passes).

Color values

HEX	#12183C
RGB	rgb(18, 24, 60)
HSL	hsl(231, 54%, 15%)
HSV	hsv(231, 70%, 24%)
CMYK	cmyk(70%, 60%, 0%, 76.5%)
CIE-LAB	lab(9.86, 10.85, -24.12)
CIE-LCH	lch(9.86, 26.45, 294.21°)
OKLab	oklab(22.71% 0.0031 -0.0691)
OKLCH	oklch(22.71% 0.069 272.6)
XYZ	xyz(1.3914, 1.1080, 4.4146)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12183C #3C3612

analogous

#122D3C #12183C #21123C

triadic

#12183C #3C1218 #183C12

tetradic

#12183C #3C122D #3C3612 #123C21

square

#12183C #3C122D #3C3612 #123C21

split-complementary

#12183C #3C2112 #2D3C12

monochromatic

#070918 #070918 #12183C #202B6B #2E3E9A

Accessibility & contrast

On white

17.19

#12183C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#12183C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12183C

17.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12183C	#FFFFFF	#000000	##FFFFFF
##12183C	1.00	17.19	1.22	17.19
#FFFFFF	17.19	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041D3D

Deuteranopia (green-blind)

#00193B

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #12183c;
/* rgb */ color: rgb(18, 24, 60);
/* oklch */ color: oklch(22.7% 0.069 272.6);

Tailwind

colors: {
  custom: {
    50: '#555472',
    500: '#12183c',
    950: '#000000',
  },
}

SCSS

$custom: #12183c;
$custom-light: #555472;
$custom-dark: #000000;

JSON

{
  "hex": "#12183c",
  "rgb": {
    "r": 18,
    "g": 24,
    "b": 60
  },
  "hsl": {
    "h": 231.429,
    "s": 53.846,
    "l": 15.294
  },
  "oklch": {
    "l": 0.22708,
    "c": 0.06919,
    "h": 272.6
  },
  "luminance": 0.01108
}

Semantic roles & 50–950 ramp

primary

#12183C

secondary

#756C35

accent

#C84BDD

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030208

muted

#78787B

Preview Lab

Preview with #12183C

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

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