#131B3D#131B3D

#131B3D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.6% C 0.066 H 270.7°. Best body text is #FFFFFF at 16.78:1 contrast (WCAG AA passes).

Color values

HEX	#131B3D
RGB	rgb(19, 27, 61)
HSL	hsl(229, 53%, 16%)
HSV	hsv(229, 69%, 24%)
CMYK	cmyk(68.9%, 55.7%, 0%, 76.1%)
CIE-LAB	lab(10.99, 9.17, -23.02)
CIE-LCH	lch(10.99, 24.77, 291.71°)
OKLab	oklab(23.6% 0.0008 -0.0658)
OKLCH	oklch(23.6% 0.066 270.7)
XYZ	xyz(1.5025, 1.2591, 4.5778)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B3D #3D3513

analogous

#13303D #131B3D #20133D

triadic

#131B3D #3D131B #1B3D13

tetradic

#131B3D #3D1330 #3D3513 #133D20

square

#131B3D #3D1330 #3D3513 #133D20

split-complementary

#131B3D #3D2013 #303D13

monochromatic

#070A17 #070A17 #131B3D #22306C #30449A

Accessibility & contrast

On white

16.78

#131B3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#131B3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B3D

16.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B3D	#FFFFFF	#000000	##FFFFFF
##131B3D	1.00	16.78	1.25	16.78
#FFFFFF	16.78	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A1F3E

Deuteranopia (green-blind)

#041C3C

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #131b3d;
/* rgb */ color: rgb(19, 27, 61);
/* oklch */ color: oklch(23.6% 0.066 270.7);

Tailwind

colors: {
  custom: {
    50: '#565673',
    500: '#131b3d',
    950: '#000000',
  },
}

SCSS

$custom: #131b3d;
$custom-light: #565673;
$custom-dark: #000000;

JSON

{
  "hex": "#131b3d",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 61
  },
  "hsl": {
    "h": 228.571,
    "s": 52.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.23604,
    "c": 0.0658,
    "h": 270.7
  },
  "luminance": 0.01259
}

Semantic roles & 50–950 ramp

primary

#131B3D

secondary

#756936

accent

#C04CDC

background

#F5F5F6

surface

#E9E9EC

border

#C5C5C7

text

#030308

muted

#78787B

Preview Lab

Preview with #131B3D

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

Preview Lab → · Contrast checker → · Palette generator →