#131D4B#131D4B

#131D4B is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.086 H 269.9°. Best body text is #FFFFFF at 16.09:1 contrast (WCAG AA passes).

Color values

HEX	#131D4B
RGB	rgb(19, 29, 75)
HSL	hsl(229, 60%, 18%)
HSV	hsv(229, 75%, 29%)
CMYK	cmyk(74.7%, 61.3%, 0%, 70.6%)
CIE-LAB	lab(12.77, 13.53, -29.93)
CIE-LCH	lch(12.77, 32.84, 294.32°)
OKLab	oklab(25.31% -0.0001 -0.0861)
OKLCH	oklch(25.31% 0.086 269.9)
XYZ	xyz(1.9775, 1.5250, 6.8454)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.59

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D4B #4B4113

analogous

#13394B #131D4B #25134B

triadic

#131D4B #4B131D #1D4B13

tetradic

#131D4B #4B1339 #4B4113 #134B25

square

#131D4B #4B1339 #4B4113 #134B25

split-complementary

#131D4B #4B2513 #394B13

monochromatic

#060918 #070A1A #131D4B #1F307C #2C43AD

Accessibility & contrast

On white

16.09

#131D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#131D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D4B

16.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D4B	#FFFFFF	#000000	##FFFFFF
##131D4B	1.00	16.09	1.31	16.09
#FFFFFF	16.09	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00244D

Deuteranopia (green-blind)

#001F4A

Tritanopia (blue-blind)

#002830

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #131d4b;
/* rgb */ color: rgb(19, 29, 75);
/* oklch */ color: oklch(25.3% 0.086 269.9);

Tailwind

colors: {
  custom: {
    50: '#59587e',
    500: '#131d4b',
    950: '#000000',
  },
}

SCSS

$custom: #131d4b;
$custom-light: #59587e;
$custom-dark: #000000;

JSON

{
  "hex": "#131d4b",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 75
  },
  "hsl": {
    "h": 229.286,
    "s": 59.574,
    "l": 18.431
  },
  "oklch": {
    "l": 0.25312,
    "c": 0.08611,
    "h": 269.9
  },
  "luminance": 0.01525
}

Semantic roles & 50–950 ramp

primary

#131D4B

secondary

#847636

accent

#C745E3

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #131D4B

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

Preview Lab → · Contrast checker → · Palette generator →