#131B3F#131B3F

#131B3F is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.069 H 270.9°. Best body text is #FFFFFF at 16.72:1 contrast (WCAG AA passes).

Color values

HEX	#131B3F
RGB	rgb(19, 27, 63)
HSL	hsl(229, 54%, 16%)
HSV	hsv(229, 70%, 25%)
CMYK	cmyk(69.8%, 57.1%, 0%, 75.3%)
CIE-LAB	lab(11.14, 10.00, -24.18)
CIE-LCH	lch(11.14, 26.17, 292.47°)
OKLab	oklab(23.77% 0.0011 -0.0692)
OKLCH	oklch(23.77% 0.069 270.9)
XYZ	xyz(1.5574, 1.2811, 4.8669)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B3F #3F3713

analogous

#13313F #131B3F #21133F

triadic

#131B3F #3F131B #1B3F13

tetradic

#131B3F #3F1331 #3F3713 #133F21

square

#131B3F #3F1331 #3F3713 #133F21

split-complementary

#131B3F #3F2113 #313F13

monochromatic

#070A18 #070A18 #131B3F #212F6E #2F439D

Accessibility & contrast

On white

16.72

#131B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#131B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B3F

16.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B3F	#FFFFFF	#000000	##FFFFFF
##131B3F	1.00	16.72	1.26	16.72
#FFFFFF	16.72	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#082040

Deuteranopia (green-blind)

#021C3E

Tritanopia (blue-blind)

#00232A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #131b3f;
/* rgb */ color: rgb(19, 27, 63);
/* oklch */ color: oklch(23.8% 0.069 270.9);

Tailwind

colors: {
  custom: {
    50: '#565674',
    500: '#131b3f',
    950: '#000000',
  },
}

SCSS

$custom: #131b3f;
$custom-light: #565674;
$custom-dark: #000000;

JSON

{
  "hex": "#131b3f",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 63
  },
  "hsl": {
    "h": 229.091,
    "s": 53.659,
    "l": 16.078
  },
  "oklch": {
    "l": 0.23773,
    "c": 0.06923,
    "h": 270.9
  },
  "luminance": 0.01281
}

Semantic roles & 50–950 ramp

primary

#131B3F

secondary

#786C36

accent

#C24BDD

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #131B3F

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

Preview Lab → · Contrast checker → · Palette generator →