#12173A#12173A

#12173A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.3% C 0.067 H 273.5°. Best body text is #FFFFFF at 17.36:1 contrast (WCAG AA passes).

Color values

HEX	#12173A
RGB	rgb(18, 23, 58)
HSL	hsl(233, 53%, 15%)
HSV	hsv(233, 69%, 23%)
CMYK	cmyk(69%, 60.3%, 0%, 77.3%)
CIE-LAB	lab(9.38, 10.79, -23.47)
CIE-LCH	lch(9.38, 25.83, 294.68°)
OKLab	oklab(22.29% 0.0042 -0.0672)
OKLCH	oklch(22.29% 0.067 273.5)
XYZ	xyz(1.3193, 1.0468, 4.1347)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#12173A #3A3512

analogous

#122B3A #12173A #21123A

triadic

#12173A #3A1217 #173A12

tetradic

#12173A #3A122B #3A3512 #123A21

square

#12173A #3A122B #3A3512 #123A21

split-complementary

#12173A #3A2112 #2B3A12

monochromatic

#070917 #070917 #12173A #202A69 #2F3C97

Accessibility & contrast

On white

17.36

#12173A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#12173A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #12173A

17.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##12173A	#FFFFFF	#000000	##FFFFFF
##12173A	1.00	17.36	1.21	17.36
#FFFFFF	17.36	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041C3B

Deuteranopia (green-blind)

#001939

Tritanopia (blue-blind)

#001F25

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #12173a;
/* rgb */ color: rgb(18, 23, 58);
/* oklch */ color: oklch(22.3% 0.067 273.5);

Tailwind

colors: {
  custom: {
    50: '#555370',
    500: '#12173a',
    950: '#000000',
  },
}

SCSS

$custom: #12173a;
$custom-light: #555370;
$custom-dark: #000000;

JSON

{
  "hex": "#12173a",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 58
  },
  "hsl": {
    "h": 232.5,
    "s": 52.632,
    "l": 14.902
  },
  "oklch": {
    "l": 0.22289,
    "c": 0.06736,
    "h": 273.5
  },
  "luminance": 0.01047
}

Semantic roles & 50–950 ramp

primary

#12173A

secondary

#736B35

accent

#CA4CDC

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #12173A

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

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