#131F39#131F39

#131F39 is a very dark, muted blue. Relative luminance 0.014; OKLCH L 24.3% C 0.053 H 264.2°. Best body text is #FFFFFF at 16.37:1 contrast (WCAG AA passes).

Color values

HEX	#131F39
RGB	rgb(19, 31, 57)
HSL	hsl(221, 50%, 15%)
HSV	hsv(221, 67%, 22%)
CMYK	cmyk(66.7%, 45.6%, 0%, 77.6%)
CIE-LAB	lab(12.05, 4.43, -18.48)
CIE-LCH	lch(12.05, 19.00, 283.48°)
OKLab	oklab(24.33% -0.0054 -0.0524)
OKLCH	oklch(24.33% 0.053 264.2)
XYZ	xyz(1.4968, 1.4137, 4.0641)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F39 #392D13

analogous

#133239 #131F39 #1A1339

triadic

#131F39 #39131F #1F3913

tetradic

#131F39 #391332 #392D13 #13391A

square

#131F39 #391332 #392D13 #13391A

split-complementary

#131F39 #391A13 #323913

monochromatic

#080C17 #080C17 #131F39 #223867 #325195

Accessibility & contrast

On white

16.37

#131F39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#131F39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F39

16.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F39	#FFFFFF	#000000	##FFFFFF
##131F39	1.00	16.37	1.28	16.37
#FFFFFF	16.37	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14213A

Deuteranopia (green-blind)

#0F1E38

Tritanopia (blue-blind)

#002529

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #131f39;
/* rgb */ color: rgb(19, 31, 57);
/* oklch */ color: oklch(24.3% 0.053 264.2);

Tailwind

colors: {
  custom: {
    50: '#545a6f',
    500: '#131f39',
    950: '#000000',
  },
}

SCSS

$custom: #131f39;
$custom-light: #545a6f;
$custom-dark: #000000;

JSON

{
  "hex": "#131f39",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 57
  },
  "hsl": {
    "h": 221.053,
    "s": 50,
    "l": 14.902
  },
  "oklch": {
    "l": 0.24326,
    "c": 0.0527,
    "h": 264.2
  },
  "luminance": 0.01414
}

Semantic roles & 50–950 ramp

primary

#131F39

secondary

#715F37

accent

#AE4EDA

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030307

muted

#78787A

Preview Lab

Preview with #131F39

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

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