#131B2F#131B2F

#131B2F is a very dark, muted blue. Relative luminance 0.011; OKLCH L 22.5% C 0.041 H 266.6°. Best body text is #FFFFFF at 17.13:1 contrast (WCAG AA passes).

Color values

HEX	#131B2F
RGB	rgb(19, 27, 47)
HSL	hsl(223, 42%, 13%)
HSV	hsv(223, 60%, 18%)
CMYK	cmyk(59.6%, 42.6%, 0%, 81.6%)
CIE-LAB	lab(10.01, 3.44, -14.50)
CIE-LCH	lch(10.01, 14.90, 283.35°)
OKLab	oklab(22.54% -0.0024 -0.0408)
OKLCH	oklch(22.54% 0.041 266.6)
XYZ	xyz(1.1734, 1.1275, 2.8446)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B2F #2F2713

analogous

#13292F #131B2F #19132F

triadic

#131B2F #2F131B #1B2F13

tetradic

#131B2F #2F1329 #2F2713 #132F19

square

#131B2F #2F1329 #2F2713 #132F19

split-complementary

#131B2F #2F1913 #292F13

monochromatic

#090D16 #090D16 #131B2F #25345B #364D86

Accessibility & contrast

On white

17.13

#131B2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#131B2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B2F

17.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B2F	#FFFFFF	#000000	##FFFFFF
##131B2F	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)

#131D30

Deuteranopia (green-blind)

#101A2F

Tritanopia (blue-blind)

#071F22

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #131b2f;
/* rgb */ color: rgb(19, 27, 47);
/* oklch */ color: oklch(22.5% 0.041 266.6);

Tailwind

colors: {
  custom: {
    50: '#535767',
    500: '#131b2f',
    950: '#000000',
  },
}

SCSS

$custom: #131b2f;
$custom-light: #535767;
$custom-dark: #000000;

JSON

{
  "hex": "#131b2f",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 47
  },
  "hsl": {
    "h": 222.857,
    "s": 42.424,
    "l": 12.941
  },
  "oklch": {
    "l": 0.2254,
    "c": 0.04092,
    "h": 266.6
  },
  "luminance": 0.01128
}

Semantic roles & 50–950 ramp

primary

#131B2F

secondary

#665937

accent

#AF56D2

background

#F4F5F6

surface

#E7E9EB

border

#C3C5C6

text

#020306

muted

#78787A

Preview Lab

Preview with #131B2F

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

Preview Lab → · Contrast checker → · Palette generator →