#131C81#131C81

#131C81 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.164 H 268.6°. Best body text is #FFFFFF at 13.90:1 contrast (WCAG AA passes).

Color values

HEX	#131C81
RGB	rgb(19, 28, 129)
HSL	hsl(235, 74%, 29%)
HSV	hsv(235, 85%, 51%)
CMYK	cmyk(85.3%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(18.16, 35.57, -56.68)
CIE-LCH	lch(18.16, 66.92, 302.11°)
OKLab	oklab(30.94% -0.004 -0.1643)
OKLCH	oklch(30.94% 0.164 268.6)
XYZ	xyz(4.6449, 2.5534, 21.0127)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131C81 #817813

analogous

#135381 #131C81 #411381

triadic

#131C81 #81131C #1C8113

tetradic

#131C81 #811353 #817813 #138141

square

#131C81 #811353 #817813 #138141

split-complementary

#131C81 #814113 #538113

monochromatic

#04061B #0B104C #131C81 #1B28B6 #2E3DE0

Accessibility & contrast

On white

13.90

#131C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#131C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131C81

13.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131C81	#FFFFFF	#000000	##FFFFFF
##131C81	1.00	13.90	1.51	13.90
#FFFFFF	13.90	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003284

Deuteranopia (green-blind)

#00277F

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #131c81;
/* rgb */ color: rgb(19, 28, 129);
/* oklch */ color: oklch(30.9% 0.164 268.6);

Tailwind

colors: {
  custom: {
    50: '#6959a7',
    500: '#131c81',
    950: '#000000',
  },
}

SCSS

$custom: #131c81;
$custom-light: #6959a7;
$custom-dark: #000000;

JSON

{
  "hex": "#131c81",
  "rgb": {
    "r": 19,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 235.091,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30939,
    "c": 0.16431,
    "h": 268.6
  },
  "luminance": 0.02554
}

Semantic roles & 50–950 ramp

primary

#131C81

secondary

#B6AC3A

accent

#E237F1

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#080410

muted

#7A797F

Preview Lab

Preview with #131C81

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

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