#13183D#13183D

#13183D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.9% C 0.071 H 273.7°. Best body text is #FFFFFF at 17.13:1 contrast (WCAG AA passes).

Color values

HEX	#13183D
RGB	rgb(19, 24, 61)
HSL	hsl(233, 53%, 16%)
HSV	hsv(233, 69%, 24%)
CMYK	cmyk(68.9%, 60.7%, 0%, 76.1%)
CIE-LAB	lab(10.02, 11.49, -24.57)
CIE-LCH	lch(10.02, 27.13, 295.06°)
OKLab	oklab(22.87% 0.0045 -0.0704)
OKLCH	oklch(22.87% 0.071 273.7)
XYZ	xyz(1.4372, 1.1285, 4.5561)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#13183D #3D3813

analogous

#132D3D #13183D #23133D

triadic

#13183D #3D1318 #183D13

tetradic

#13183D #3D132D #3D3813 #133D23

square

#13183D #3D132D #3D3813 #133D23

split-complementary

#13183D #3D2313 #2D3D13

monochromatic

#070917 #070917 #13183D #222A6C #303D9A

Accessibility & contrast

On white

17.13

#13183D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#13183D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #13183D

17.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##13183D	#FFFFFF	#000000	##FFFFFF
##13183D	1.00	17.13	1.23	17.13
#FFFFFF	17.13	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031D3E

Deuteranopia (green-blind)

#001A3C

Tritanopia (blue-blind)

#002127

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #13183d;
/* rgb */ color: rgb(19, 24, 61);
/* oklch */ color: oklch(22.9% 0.071 273.7);

Tailwind

colors: {
  custom: {
    50: '#565473',
    500: '#13183d',
    950: '#000000',
  },
}

SCSS

$custom: #13183d;
$custom-light: #565473;
$custom-dark: #000000;

JSON

{
  "hex": "#13183d",
  "rgb": {
    "r": 19,
    "g": 24,
    "b": 61
  },
  "hsl": {
    "h": 232.857,
    "s": 52.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.22873,
    "c": 0.07056,
    "h": 273.7
  },
  "luminance": 0.01129
}

Semantic roles & 50–950 ramp

primary

#13183D

secondary

#756E36

accent

#CB4CDC

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #13183D

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

Preview Lab → · Contrast checker → · Palette generator →