#131D7F#131D7F

#131D7F is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.9% C 0.161 H 268.6°. Best body text is #FFFFFF at 13.91:1 contrast (WCAG AA passes).

Color values

HEX	#131D7F
RGB	rgb(19, 29, 127)
HSL	hsl(234, 74%, 29%)
HSV	hsv(234, 85%, 50%)
CMYK	cmyk(85%, 77.2%, 0%, 50.2%)
CIE-LAB	lab(18.14, 34.23, -55.45)
CIE-LCH	lch(18.14, 65.16, 301.69°)
OKLab	oklab(30.86% -0.004 -0.1607)
OKLCH	oklch(30.86% 0.161 268.6)
XYZ	xyz(4.5374, 2.5489, 20.3274)
Luminance	0.0255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D7F #7F7513

analogous

#13537F #131D7F #3F137F

triadic

#131D7F #7F131D #1D7F13

tetradic

#131D7F #7F1353 #7F7513 #137F3F

square

#131D7F #7F1353 #7F7513 #137F3F

split-complementary

#131D7F #7F3F13 #537F13

monochromatic

#04061B #0B114A #131D7F #1B29B4 #2D3DE0

Accessibility & contrast

On white

13.91

#131D7F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#131D7F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D7F

13.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D7F	#FFFFFF	#000000	##FFFFFF
##131D7F	1.00	13.91	1.51	13.91
#FFFFFF	13.91	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003282

Deuteranopia (green-blind)

#00277D

Tritanopia (blue-blind)

#003A4C

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #131d7f;
/* rgb */ color: rgb(19, 29, 127);
/* oklch */ color: oklch(30.9% 0.161 268.6);

Tailwind

colors: {
  custom: {
    50: '#685aa5',
    500: '#131d7f',
    950: '#000000',
  },
}

SCSS

$custom: #131d7f;
$custom-light: #685aa5;
$custom-dark: #000000;

JSON

{
  "hex": "#131d7f",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 127
  },
  "hsl": {
    "h": 234.444,
    "s": 73.973,
    "l": 28.627
  },
  "oklch": {
    "l": 0.30856,
    "c": 0.16073,
    "h": 268.6
  },
  "luminance": 0.02549
}

Semantic roles & 50–950 ramp

primary

#131D7F

secondary

#B4A939

accent

#DF37F1

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #131D7F

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

Preview Lab → · Contrast checker → · Palette generator →