#131F5C#131F5C

#131F5C is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.4% C 0.110 H 269.1°. Best body text is #FFFFFF at 15.24:1 contrast (WCAG AA passes).

Color values

HEX	#131F5C
RGB	rgb(19, 31, 92)
HSL	hsl(230, 66%, 22%)
HSV	hsv(230, 79%, 36%)
CMYK	cmyk(79.3%, 66.3%, 0%, 63.9%)
CIE-LAB	lab(14.90, 19.16, -37.98)
CIE-LCH	lch(14.90, 42.54, 296.77°)
OKLab	oklab(27.39% -0.0016 -0.1097)
OKLCH	oklch(27.39% 0.11 269.1)
XYZ	xyz(2.6896, 1.8908, 10.3464)
Luminance	0.0189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F5C #5C5013

analogous

#13445C #131F5C #2C135C

triadic

#131F5C #5C131F #1F5C13

tetradic

#131F5C #5C1344 #5C5013 #135C2C

square

#131F5C #5C1344 #5C5013 #135C2C

split-complementary

#131F5C #5C2C13 #445C13

monochromatic

#050919 #090E29 #131F5C #1D308F #2841C1

Accessibility & contrast

On white

15.24

#131F5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#131F5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F5C

15.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F5C	#FFFFFF	#000000	##FFFFFF
##131F5C	1.00	15.24	1.38	15.24
#FFFFFF	15.24	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00295E

Deuteranopia (green-blind)

#00225B

Tritanopia (blue-blind)

#002F3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #131f5c;
/* rgb */ color: rgb(19, 31, 92);
/* oklch */ color: oklch(27.4% 0.110 269.1);

Tailwind

colors: {
  custom: {
    50: '#5d5a8b',
    500: '#131f5c',
    950: '#000000',
  },
}

SCSS

$custom: #131f5c;
$custom-light: #5d5a8b;
$custom-dark: #000000;

JSON

{
  "hex": "#131f5c",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 92
  },
  "hsl": {
    "h": 230.137,
    "s": 65.766,
    "l": 21.765
  },
  "oklch": {
    "l": 0.27387,
    "c": 0.10975,
    "h": 269.1
  },
  "luminance": 0.01891
}

Semantic roles & 50–950 ramp

primary

#131F5C

secondary

#948537

accent

#CD3FE9

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #131F5C

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

Preview Lab → · Contrast checker → · Palette generator →