#131D3C#131D3C

#131D3C is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.0% C 0.061 H 268.1°. Best body text is #FFFFFF at 16.55:1 contrast (WCAG AA passes).

Color values

HEX	#131D3C
RGB	rgb(19, 29, 60)
HSL	hsl(225, 52%, 15%)
HSV	hsv(225, 68%, 24%)
CMYK	cmyk(68.3%, 51.7%, 0%, 76.5%)
CIE-LAB	lab(11.57, 7.20, -21.36)
CIE-LCH	lch(11.57, 22.55, 288.64°)
OKLab	oklab(24.03% -0.002 -0.0609)
OKLCH	oklch(24.03% 0.061 268.1)
XYZ	xyz(1.5233, 1.3433, 4.4531)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D3C #3C3213

analogous

#13313C #131D3C #1D133C

triadic

#131D3C #3C131D #1D3C13

tetradic

#131D3C #3C1331 #3C3213 #133C1D

square

#131D3C #3C1331 #3C3213 #133C1D

split-complementary

#131D3C #3C1D13 #313C13

monochromatic

#070B17 #070B17 #131D3C #22336A #304A99

Accessibility & contrast

On white

16.55

#131D3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#131D3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D3C

16.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D3C	#FFFFFF	#000000	##FFFFFF
##131D3C	1.00	16.55	1.27	16.55
#FFFFFF	16.55	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F213D

Deuteranopia (green-blind)

#091D3B

Tritanopia (blue-blind)

#002429

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #131d3c;
/* rgb */ color: rgb(19, 29, 60);
/* oklch */ color: oklch(24.0% 0.061 268.1);

Tailwind

colors: {
  custom: {
    50: '#555872',
    500: '#131d3c',
    950: '#000000',
  },
}

SCSS

$custom: #131d3c;
$custom-light: #555872;
$custom-dark: #000000;

JSON

{
  "hex": "#131d3c",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 60
  },
  "hsl": {
    "h": 225.366,
    "s": 51.899,
    "l": 15.49
  },
  "oklch": {
    "l": 0.24029,
    "c": 0.06094,
    "h": 268.1
  },
  "luminance": 0.01343
}

Semantic roles & 50–950 ramp

primary

#131D3C

secondary

#746536

accent

#B84CDB

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #131D3C

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

Preview Lab → · Contrast checker → · Palette generator →