#13183F#13183F

#13183F is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.1% C 0.074 H 273.6°. Best body text is #FFFFFF at 17.07:1 contrast (WCAG AA passes).

Color values

HEX	#13183F
RGB	rgb(19, 24, 63)
HSL	hsl(233, 54%, 16%)
HSV	hsv(233, 70%, 25%)
CMYK	cmyk(69.8%, 61.9%, 0%, 75.3%)
CIE-LAB	lab(10.19, 12.32, -25.72)
CIE-LCH	lch(10.19, 28.52, 295.59°)
OKLab	oklab(23.05% 0.0047 -0.0738)
OKLCH	oklch(23.05% 0.074 273.6)
XYZ	xyz(1.4921, 1.1505, 4.8451)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#13183F #3F3A13

analogous

#132E3F #13183F #24133F

triadic

#13183F #3F1318 #183F13

tetradic

#13183F #3F132E #3F3A13 #133F24

square

#13183F #3F132E #3F3A13 #133F24

split-complementary

#13183F #3F2413 #2E3F13

monochromatic

#070918 #070918 #13183F #212A6E #2F3C9D

Accessibility & contrast

On white

17.07

#13183F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#13183F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #13183F

17.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##13183F	#FFFFFF	#000000	##FFFFFF
##13183F	1.00	17.07	1.23	17.07
#FFFFFF	17.07	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011E40

Deuteranopia (green-blind)

#001A3E

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #13183f;
/* rgb */ color: rgb(19, 24, 63);
/* oklch */ color: oklch(23.1% 0.074 273.6);

Tailwind

colors: {
  custom: {
    50: '#565474',
    500: '#13183f',
    950: '#000000',
  },
}

SCSS

$custom: #13183f;
$custom-light: #565474;
$custom-dark: #000000;

JSON

{
  "hex": "#13183f",
  "rgb": {
    "r": 19,
    "g": 24,
    "b": 63
  },
  "hsl": {
    "h": 233.182,
    "s": 53.659,
    "l": 16.078
  },
  "oklch": {
    "l": 0.23053,
    "c": 0.07395,
    "h": 273.6
  },
  "luminance": 0.01151
}

Semantic roles & 50–950 ramp

primary

#13183F

secondary

#787036

accent

#CC4BDD

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #13183F

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

Preview Lab → · Contrast checker → · Palette generator →