#131B39#131B39

#131B39 is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.3% C 0.059 H 270.1°. Best body text is #FFFFFF at 16.89:1 contrast (WCAG AA passes).

Color values

HEX	#131B39
RGB	rgb(19, 27, 57)
HSL	hsl(227, 50%, 15%)
HSV	hsv(227, 67%, 22%)
CMYK	cmyk(66.7%, 52.6%, 0%, 77.6%)
CIE-LAB	lab(10.69, 7.50, -20.65)
CIE-LCH	lch(10.69, 21.97, 289.97°)
OKLab	oklab(23.28% 0.0001 -0.0588)
OKLCH	oklch(23.28% 0.059 270.1)
XYZ	xyz(1.3988, 1.2176, 4.0314)
Luminance	0.0122 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B39 #393113

analogous

#132E39 #131B39 #1E1339

triadic

#131B39 #39131B #1B3913

tetradic

#131B39 #39132E #393113 #13391E

square

#131B39 #39132E #393113 #13391E

split-complementary

#131B39 #391E13 #2E3913

monochromatic

#080B17 #080B17 #131B39 #223167 #324695

Accessibility & contrast

On white

16.89

#131B39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#131B39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B39

16.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B39	#FFFFFF	#000000	##FFFFFF
##131B39	1.00	16.89	1.24	16.89
#FFFFFF	16.89	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D1F3A

Deuteranopia (green-blind)

#081B38

Tritanopia (blue-blind)

#002227

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #131b39;
/* rgb */ color: rgb(19, 27, 57);
/* oklch */ color: oklch(23.3% 0.059 270.1);

Tailwind

colors: {
  custom: {
    50: '#55566f',
    500: '#131b39',
    950: '#000000',
  },
}

SCSS

$custom: #131b39;
$custom-light: #55566f;
$custom-dark: #000000;

JSON

{
  "hex": "#131b39",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 57
  },
  "hsl": {
    "h": 227.368,
    "s": 50,
    "l": 14.902
  },
  "oklch": {
    "l": 0.23279,
    "c": 0.05884,
    "h": 270.1
  },
  "luminance": 0.01218
}

Semantic roles & 50–950 ramp

primary

#131B39

secondary

#716537

accent

#BC4EDA

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #131B39

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

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