#131B53#131B53

#131B53 is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.6% C 0.102 H 271.0°. Best body text is #FFFFFF at 16.04:1 contrast (WCAG AA passes).

Color values

HEX	#131B53
RGB	rgb(19, 27, 83)
HSL	hsl(233, 63%, 20%)
HSV	hsv(233, 77%, 33%)
CMYK	cmyk(77.1%, 67.5%, 0%, 67.5%)
CIE-LAB	lab(12.90, 18.38, -35.19)
CIE-LCH	lch(12.90, 39.70, 297.58°)
OKLab	oklab(25.64% 0.0018 -0.1016)
OKLCH	oklch(25.64% 0.102 271)
XYZ	xyz(2.2213, 1.5466, 8.3634)
Luminance	0.0155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B53 #534B13

analogous

#133B53 #131B53 #2B1353

triadic

#131B53 #53131B #1B5313

tetradic

#131B53 #53133B #534B13 #13532B

square

#131B53 #53133B #534B13 #13532B

split-complementary

#131B53 #532B13 #3B5313

monochromatic

#060819 #080B21 #131B53 #1E2B85 #2A3BB7

Accessibility & contrast

On white

16.04

#131B53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.31

#131B53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B53

16.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B53	#FFFFFF	#000000	##FFFFFF
##131B53	1.00	16.04	1.31	16.04
#FFFFFF	16.04	1.00	21.00	1.00
#000000	1.31	21.00	1.00	21.00
##FFFFFF	16.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002455

Deuteranopia (green-blind)

#001E52

Tritanopia (blue-blind)

#002934

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #131b53;
/* rgb */ color: rgb(19, 27, 83);
/* oklch */ color: oklch(25.6% 0.102 271.0);

Tailwind

colors: {
  custom: {
    50: '#5b5784',
    500: '#131b53',
    950: '#000000',
  },
}

SCSS

$custom: #131b53;
$custom-light: #5b5784;
$custom-dark: #000000;

JSON

{
  "hex": "#131b53",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 83
  },
  "hsl": {
    "h": 232.5,
    "s": 62.745,
    "l": 20
  },
  "oklch": {
    "l": 0.25641,
    "c": 0.1016,
    "h": 271
  },
  "luminance": 0.01547
}

Semantic roles & 50–950 ramp

primary

#131B53

secondary

#8B8136

accent

#D142E6

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#04030B

muted

#79787C

Preview Lab

Preview with #131B53

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

Preview Lab → · Contrast checker → · Palette generator →