#131D81#131D81

#131D81 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.1% C 0.163 H 268.5°. Best body text is #FFFFFF at 13.81:1 contrast (WCAG AA passes).

Color values

HEX	#131D81
RGB	rgb(19, 29, 129)
HSL	hsl(235, 74%, 29%)
HSV	hsv(235, 85%, 51%)
CMYK	cmyk(85.3%, 77.5%, 0%, 49.4%)
CIE-LAB	lab(18.37, 34.96, -56.33)
CIE-LCH	lch(18.37, 66.30, 301.83°)
OKLab	oklab(31.09% -0.0043 -0.1632)
OKLCH	oklch(31.09% 0.163 268.5)
XYZ	xyz(4.6690, 2.6016, 21.0207)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D81 #817713

analogous

#135481 #131D81 #401381

triadic

#131D81 #81131D #1D8113

tetradic

#131D81 #811354 #817713 #138140

square

#131D81 #811354 #817713 #138140

split-complementary

#131D81 #814013 #548113

monochromatic

#04061B #0B114C #131D81 #1B29B6 #2E3EE0

Accessibility & contrast

On white

13.81

#131D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#131D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D81

13.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D81	#FFFFFF	#000000	##FFFFFF
##131D81	1.00	13.81	1.52	13.81
#FFFFFF	13.81	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00277F

Tritanopia (blue-blind)

#003B4E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #131d81;
/* rgb */ color: rgb(19, 29, 129);
/* oklch */ color: oklch(31.1% 0.163 268.5);

Tailwind

colors: {
  custom: {
    50: '#685aa7',
    500: '#131d81',
    950: '#000000',
  },
}

SCSS

$custom: #131d81;
$custom-light: #685aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#131d81",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 129
  },
  "hsl": {
    "h": 234.545,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.31091,
    "c": 0.1633,
    "h": 268.5
  },
  "luminance": 0.02602
}

Semantic roles & 50–950 ramp

primary

#131D81

secondary

#B6AB3A

accent

#E037F1

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#070410

muted

#7A797F

Preview Lab

Preview with #131D81

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

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