#131F5A#131F5A

#131F5A is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.2% C 0.107 H 269.1°. Best body text is #FFFFFF at 15.31:1 contrast (WCAG AA passes).

Color values

HEX	#131F5A
RGB	rgb(19, 31, 90)
HSL	hsl(230, 65%, 21%)
HSV	hsv(230, 79%, 35%)
CMYK	cmyk(78.9%, 65.6%, 0%, 64.7%)
CIE-LAB	lab(14.71, 18.33, -36.95)
CIE-LCH	lch(14.71, 41.25, 296.38°)
OKLab	oklab(27.19% -0.0016 -0.1067)
OKLCH	oklch(27.19% 0.107 269.1)
XYZ	xyz(2.6034, 1.8563, 9.8920)
Luminance	0.0186 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F5A #5A4E13

analogous

#13435A #131F5A #2B135A

triadic

#131F5A #5A131F #1F5A13

tetradic

#131F5A #5A1343 #5A4E13 #135A2B

square

#131F5A #5A1343 #5A4E13 #135A2B

split-complementary

#131F5A #5A2B13 #435A13

monochromatic

#050919 #080E27 #131F5A #1E308D #2842BF

Accessibility & contrast

On white

15.31

#131F5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#131F5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F5A

15.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F5A	#FFFFFF	#000000	##FFFFFF
##131F5A	1.00	15.31	1.37	15.31
#FFFFFF	15.31	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285C

Deuteranopia (green-blind)

#002259

Tritanopia (blue-blind)

#002E39

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #131f5a;
/* rgb */ color: rgb(19, 31, 90);
/* oklch */ color: oklch(27.2% 0.107 269.1);

Tailwind

colors: {
  custom: {
    50: '#5d5a89',
    500: '#131f5a',
    950: '#000000',
  },
}

SCSS

$custom: #131f5a;
$custom-light: #5d5a89;
$custom-dark: #000000;

JSON

{
  "hex": "#131f5a",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 90
  },
  "hsl": {
    "h": 229.859,
    "s": 65.138,
    "l": 21.373
  },
  "oklch": {
    "l": 0.27189,
    "c": 0.10672,
    "h": 269.1
  },
  "luminance": 0.01857
}

Semantic roles & 50–950 ramp

primary

#131F5A

secondary

#928337

accent

#CC40E8

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #131F5A

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

Preview Lab → · Contrast checker → · Palette generator →