#131B3C#131B3C

#131B3C is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.5% C 0.064 H 270.6°. Best body text is #FFFFFF at 16.80:1 contrast (WCAG AA passes).

Color values

HEX	#131B3C
RGB	rgb(19, 27, 60)
HSL	hsl(228, 52%, 15%)
HSV	hsv(228, 68%, 24%)
CMYK	cmyk(68.3%, 55%, 0%, 76.5%)
CIE-LAB	lab(10.91, 8.75, -22.43)
CIE-LCH	lch(10.91, 24.08, 291.31°)
OKLab	oklab(23.52% 0.0006 -0.0641)
OKLCH	oklch(23.52% 0.064 270.6)
XYZ	xyz(1.4758, 1.2484, 4.4373)
Luminance	0.0125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B3C #3C3413

analogous

#132F3C #131B3C #1F133C

triadic

#131B3C #3C131B #1B3C13

tetradic

#131B3C #3C132F #3C3413 #133C1F

square

#131B3C #3C132F #3C3413 #133C1F

split-complementary

#131B3C #3C1F13 #2F3C13

monochromatic

#070A17 #070A17 #131B3C #22306A #304599

Accessibility & contrast

On white

16.80

#131B3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#131B3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B3C

16.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B3C	#FFFFFF	#000000	##FFFFFF
##131B3C	1.00	16.80	1.25	16.80
#FFFFFF	16.80	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B1F3D

Deuteranopia (green-blind)

#051C3B

Tritanopia (blue-blind)

#002228

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #131b3c;
/* rgb */ color: rgb(19, 27, 60);
/* oklch */ color: oklch(23.5% 0.064 270.6);

Tailwind

colors: {
  custom: {
    50: '#555672',
    500: '#131b3c',
    950: '#000000',
  },
}

SCSS

$custom: #131b3c;
$custom-light: #555672;
$custom-dark: #000000;

JSON

{
  "hex": "#131b3c",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 60
  },
  "hsl": {
    "h": 228.293,
    "s": 51.899,
    "l": 15.49
  },
  "oklch": {
    "l": 0.23522,
    "c": 0.06407,
    "h": 270.6
  },
  "luminance": 0.01249
}

Semantic roles & 50–950 ramp

primary

#131B3C

secondary

#746836

accent

#BF4CDB

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #131B3C

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

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