#131B37#131B37

#131B37 is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.1% C 0.055 H 269.7°. Best body text is #FFFFFF at 16.94:1 contrast (WCAG AA passes).

Color values

HEX	#131B37
RGB	rgb(19, 27, 55)
HSL	hsl(227, 49%, 15%)
HSV	hsv(227, 65%, 22%)
CMYK	cmyk(65.5%, 50.9%, 0%, 78.4%)
CIE-LAB	lab(10.54, 6.68, -19.45)
CIE-LCH	lch(10.54, 20.56, 288.95°)
OKLab	oklab(23.12% -0.0003 -0.0553)
OKLCH	oklch(23.12% 0.055 269.7)
XYZ	xyz(1.3499, 1.1980, 3.7738)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B37 #372F13

analogous

#132D37 #131B37 #1D1337

triadic

#131B37 #37131B #1B3713

tetradic

#131B37 #37132D #372F13 #13371D

square

#131B37 #37132D #372F13 #13371D

split-complementary

#131B37 #371D13 #2D3713

monochromatic

#080B17 #080B17 #131B37 #233164 #324892

Accessibility & contrast

On white

16.94

#131B37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#131B37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B37

16.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B37	#FFFFFF	#000000	##FFFFFF
##131B37	1.00	16.94	1.24	16.94
#FFFFFF	16.94	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F1E38

Deuteranopia (green-blind)

#0A1B36

Tritanopia (blue-blind)

#022126

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #131b37;
/* rgb */ color: rgb(19, 27, 55);
/* oklch */ color: oklch(23.1% 0.055 269.7);

Tailwind

colors: {
  custom: {
    50: '#54566e',
    500: '#131b37',
    950: '#000000',
  },
}

SCSS

$custom: #131b37;
$custom-light: #54566e;
$custom-dark: #000000;

JSON

{
  "hex": "#131b37",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 55
  },
  "hsl": {
    "h": 226.667,
    "s": 48.649,
    "l": 14.51
  },
  "oklch": {
    "l": 0.23123,
    "c": 0.05531,
    "h": 269.7
  },
  "luminance": 0.01198
}

Semantic roles & 50–950 ramp

primary

#131B37

secondary

#6F6337

accent

#BA50D8

background

#F5F5F6

surface

#E8E9EB

border

#C4C5C6

text

#030307

muted

#78787A

Preview Lab

Preview with #131B37

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

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