#13173F#13173F

#13173F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.8% C 0.076 H 274.4°. Best body text is #FFFFFF at 17.18:1 contrast (WCAG AA passes).

Color values

HEX	#13173F
RGB	rgb(19, 23, 63)
HSL	hsl(235, 54%, 16%)
HSV	hsv(235, 70%, 25%)
CMYK	cmyk(69.8%, 63.5%, 0%, 75.3%)
CIE-LAB	lab(9.88, 13.09, -26.23)
CIE-LCH	lch(9.88, 29.31, 296.53°)
OKLab	oklab(22.82% 0.0058 -0.0753)
OKLCH	oklch(22.82% 0.076 274.4)
XYZ	xyz(1.4719, 1.1100, 4.8384)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#13173F #3F3B13

analogous

#132D3F #13173F #25133F

triadic

#13173F #3F1317 #173F13

tetradic

#13173F #3F132D #3F3B13 #133F25

square

#13173F #3F132D #3F3B13 #133F25

split-complementary

#13173F #3F2513 #2D3F13

monochromatic

#070918 #070918 #13173F #21286E #2F399D

Accessibility & contrast

On white

17.18

#13173F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#13173F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #13173F

17.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##13173F	#FFFFFF	#000000	##FFFFFF
##13173F	1.00	17.18	1.22	17.18
#FFFFFF	17.18	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D40

Deuteranopia (green-blind)

#00193E

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #13173f;
/* rgb */ color: rgb(19, 23, 63);
/* oklch */ color: oklch(22.8% 0.076 274.4);

Tailwind

colors: {
  custom: {
    50: '#565374',
    500: '#13173f',
    950: '#000000',
  },
}

SCSS

$custom: #13173f;
$custom-light: #565374;
$custom-dark: #000000;

JSON

{
  "hex": "#13173f",
  "rgb": {
    "r": 19,
    "g": 23,
    "b": 63
  },
  "hsl": {
    "h": 234.545,
    "s": 53.659,
    "l": 16.078
  },
  "oklch": {
    "l": 0.2282,
    "c": 0.07552,
    "h": 274.4
  },
  "luminance": 0.0111
}

Semantic roles & 50–950 ramp

primary

#13173F

secondary

#787236

accent

#D04BDD

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #13173F

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

Preview Lab → · Contrast checker → · Palette generator →