#131D3B#131D3B

#131D3B is a very dark, muted blue. Relative luminance 0.013; OKLCH L 24.0% C 0.059 H 267.9°. Best body text is #FFFFFF at 16.58:1 contrast (WCAG AA passes).

Color values

HEX	#131D3B
RGB	rgb(19, 29, 59)
HSL	hsl(225, 51%, 15%)
HSV	hsv(225, 68%, 23%)
CMYK	cmyk(67.8%, 50.8%, 0%, 76.9%)
CIE-LAB	lab(11.50, 6.79, -20.77)
CIE-LCH	lch(11.50, 21.85, 288.10°)
OKLab	oklab(23.95% -0.0022 -0.0592)
OKLCH	oklch(23.95% 0.059 267.9)
XYZ	xyz(1.4971, 1.3328, 4.3152)
Luminance	0.0133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D3B #3B3113

analogous

#13313B #131D3B #1D133B

triadic

#131D3B #3B131D #1D3B13

tetradic

#131D3B #3B1331 #3B3113 #133B1D

square

#131D3B #3B1331 #3B3113 #133B1D

split-complementary

#131D3B #3B1D13 #313B13

monochromatic

#070B17 #070B17 #131D3B #223469 #314B98

Accessibility & contrast

On white

16.58

#131D3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#131D3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D3B

16.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D3B	#FFFFFF	#000000	##FFFFFF
##131D3B	1.00	16.58	1.27	16.58
#FFFFFF	16.58	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F203C

Deuteranopia (green-blind)

#0A1D3A

Tritanopia (blue-blind)

#002429

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #131d3b;
/* rgb */ color: rgb(19, 29, 59);
/* oklch */ color: oklch(24.0% 0.059 267.9);

Tailwind

colors: {
  custom: {
    50: '#555871',
    500: '#131d3b',
    950: '#000000',
  },
}

SCSS

$custom: #131d3b;
$custom-light: #555871;
$custom-dark: #000000;

JSON

{
  "hex": "#131d3b",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 59
  },
  "hsl": {
    "h": 225,
    "s": 51.282,
    "l": 15.294
  },
  "oklch": {
    "l": 0.23951,
    "c": 0.05921,
    "h": 267.9
  },
  "luminance": 0.01333
}

Semantic roles & 50–950 ramp

primary

#131D3B

secondary

#736436

accent

#B74DDB

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #131D3B

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

Preview Lab → · Contrast checker → · Palette generator →