#131B3A#131B3A

#131B3A is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.4% C 0.061 H 270.3°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#131B3A
RGB	rgb(19, 27, 58)
HSL	hsl(228, 51%, 15%)
HSV	hsv(228, 67%, 23%)
CMYK	cmyk(67.2%, 53.4%, 0%, 77.3%)
CIE-LAB	lab(10.76, 7.92, -21.24)
CIE-LCH	lch(10.76, 22.67, 290.44°)
OKLab	oklab(23.36% 0.0003 -0.0606)
OKLCH	oklch(23.36% 0.061 270.3)
XYZ	xyz(1.4240, 1.2277, 4.1641)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B3A #3A3213

analogous

#132F3A #131B3A #1E133A

triadic

#131B3A #3A131B #1B3A13

tetradic

#131B3A #3A132F #3A3213 #133A1E

square

#131B3A #3A132F #3A3213 #133A1E

split-complementary

#131B3A #3A1E13 #2F3A13

monochromatic

#080B17 #080B17 #131B3A #223068 #314696

Accessibility & contrast

On white

16.86

#131B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#131B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B3A

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B3A	#FFFFFF	#000000	##FFFFFF
##131B3A	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D1F3B

Deuteranopia (green-blind)

#071B39

Tritanopia (blue-blind)

#002227

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #131b3a;
/* rgb */ color: rgb(19, 27, 58);
/* oklch */ color: oklch(23.4% 0.061 270.3);

Tailwind

colors: {
  custom: {
    50: '#555670',
    500: '#131b3a',
    950: '#000000',
  },
}

SCSS

$custom: #131b3a;
$custom-light: #555670;
$custom-dark: #000000;

JSON

{
  "hex": "#131b3a",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 58
  },
  "hsl": {
    "h": 227.692,
    "s": 50.649,
    "l": 15.098
  },
  "oklch": {
    "l": 0.23359,
    "c": 0.06059,
    "h": 270.3
  },
  "luminance": 0.01228
}

Semantic roles & 50–950 ramp

primary

#131B3A

secondary

#726636

accent

#BD4EDA

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #131B3A

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

Preview Lab → · Contrast checker → · Palette generator →