#131D2B#131D2B

#131D2B is a very dark, muted blue. Relative luminance 0.012; OKLCH L 22.8% C 0.031 H 256.9°. Best body text is #FFFFFF at 16.96:1 contrast (WCAG AA passes).

Color values

HEX	#131D2B
RGB	rgb(19, 29, 43)
HSL	hsl(215, 39%, 12%)
HSV	hsv(215, 56%, 17%)
CMYK	cmyk(55.8%, 32.6%, 0%, 83.1%)
CIE-LAB	lab(10.49, 0.38, -10.82)
CIE-LCH	lch(10.49, 10.83, 272.01°)
OKLab	oklab(22.84% -0.007 -0.0302)
OKLCH	oklch(22.84% 0.031 256.9)
XYZ	xyz(1.1438, 1.1915, 2.4547)
Luminance	0.0119 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D2B #2B2113

analogous

#13292B #131D2B #15132B

triadic

#131D2B #2B131D #1D2B13

tetradic

#131D2B #2B1329 #2B2113 #132B15

square

#131D2B #2B1329 #2B2113 #132B15

split-complementary

#131D2B #2B1513 #292B13

monochromatic

#090E15 #090E15 #131D2B #263A55 #395680

Accessibility & contrast

On white

16.96

#131D2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#131D2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D2B

16.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D2B	#FFFFFF	#000000	##FFFFFF
##131D2B	1.00	16.96	1.24	16.96
#FFFFFF	16.96	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181E2C

Deuteranopia (green-blind)

#151B2B

Tritanopia (blue-blind)

#0A2022

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #131d2b;
/* rgb */ color: rgb(19, 29, 43);
/* oklch */ color: oklch(22.8% 0.031 256.9);

Tailwind

colors: {
  custom: {
    50: '#525864',
    500: '#131d2b',
    950: '#000000',
  },
}

SCSS

$custom: #131d2b;
$custom-light: #525864;
$custom-dark: #000000;

JSON

{
  "hex": "#131d2b",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 43
  },
  "hsl": {
    "h": 215,
    "s": 38.71,
    "l": 12.157
  },
  "oklch": {
    "l": 0.2284,
    "c": 0.03101,
    "h": 256.9
  },
  "luminance": 0.01192
}

Semantic roles & 50–950 ramp

primary

#131D2B

secondary

#625038

accent

#9E59CF

background

#F4F5F5

surface

#E7E9EA

border

#C3C5C6

text

#020305

muted

#787879

Preview Lab

Preview with #131D2B

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

Preview Lab → · Contrast checker → · Palette generator →