#131B51#131B51

#131B51 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.4% C 0.099 H 271.1°. Best body text is #FFFFFF at 16.11:1 contrast (WCAG AA passes).

Color values

HEX	#131B51
RGB	rgb(19, 27, 81)
HSL	hsl(232, 62%, 20%)
HSV	hsv(232, 77%, 32%)
CMYK	cmyk(76.5%, 66.7%, 0%, 68.2%)
CIE-LAB	lab(12.71, 17.55, -34.14)
CIE-LCH	lch(12.71, 38.38, 297.21°)
OKLab	oklab(25.44% 0.0019 -0.0985)
OKLCH	oklch(25.44% 0.099 271.1)
XYZ	xyz(2.1452, 1.5162, 7.9626)
Luminance	0.0152 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.47

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B51 #514913

analogous

#133A51 #131B51 #2A1351

triadic

#131B51 #51131B #1B5113

tetradic

#131B51 #51133A #514913 #13512A

square

#131B51 #51133A #514913 #13512A

split-complementary

#131B51 #512A13 #3A5113

monochromatic

#060819 #070A1F #131B51 #1F2C83 #2A3CB4

Accessibility & contrast

On white

16.11

#131B51 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#131B51 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B51

16.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B51	#FFFFFF	#000000	##FFFFFF
##131B51	1.00	16.11	1.30	16.11
#FFFFFF	16.11	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002453

Deuteranopia (green-blind)

#001E50

Tritanopia (blue-blind)

#002933

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #131b51;
/* rgb */ color: rgb(19, 27, 81);
/* oklch */ color: oklch(25.4% 0.099 271.1);

Tailwind

colors: {
  custom: {
    50: '#5b5782',
    500: '#131b51',
    950: '#000000',
  },
}

SCSS

$custom: #131b51;
$custom-light: #5b5782;
$custom-dark: #000000;

JSON

{
  "hex": "#131b51",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 81
  },
  "hsl": {
    "h": 232.258,
    "s": 62,
    "l": 19.608
  },
  "oklch": {
    "l": 0.25441,
    "c": 0.09851,
    "h": 271.1
  },
  "luminance": 0.01516
}

Semantic roles & 50–950 ramp

primary

#131B51

secondary

#8A7F36

accent

#D043E5

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030A

muted

#79787C

Preview Lab

Preview with #131B51

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

Preview Lab → · Contrast checker → · Palette generator →