#131557#131557

#131557 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.9% C 0.115 H 272.9°. Best body text is #FFFFFF at 16.50:1 contrast (WCAG AA passes).

Color values

HEX	#131557
RGB	rgb(19, 21, 87)
HSL	hsl(238, 64%, 21%)
HSV	hsv(238, 78%, 34%)
CMYK	cmyk(78.2%, 75.9%, 0%, 65.9%)
CIE-LAB	lab(11.71, 24.27, -39.86)
CIE-LCH	lch(11.71, 46.67, 301.34°)
OKLab	oklab(24.9% 0.0059 -0.1153)
OKLCH	oklch(24.9% 0.115 272.9)
XYZ	xyz(2.2564, 1.3627, 9.1591)
Luminance	0.0136 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131557 #575513

analogous

#133757 #131557 #331357

triadic

#131557 #571315 #155713

tetradic

#131557 #571337 #575513 #135733

square

#131557 #571337 #575513 #135733

split-complementary

#131557 #573313 #375713

monochromatic

#050619 #080925 #131557 #1E2189 #292DBB

Accessibility & contrast

On white

16.50

#131557 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#131557 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131557

16.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131557	#FFFFFF	#000000	##FFFFFF
##131557	1.00	16.50	1.27	16.50
#FFFFFF	16.50	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002259

Deuteranopia (green-blind)

#001C56

Tritanopia (blue-blind)

#002734

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #131557;
/* rgb */ color: rgb(19, 21, 87);
/* oklch */ color: oklch(24.9% 0.115 272.9);

Tailwind

colors: {
  custom: {
    50: '#5d5387',
    500: '#131557',
    950: '#000000',
  },
}

SCSS

$custom: #131557;
$custom-light: #5d5387;
$custom-dark: #000000;

JSON

{
  "hex": "#131557",
  "rgb": {
    "r": 19,
    "g": 21,
    "b": 87
  },
  "hsl": {
    "h": 238.235,
    "s": 64.151,
    "l": 20.784
  },
  "oklch": {
    "l": 0.24897,
    "c": 0.11544,
    "h": 272.9
  },
  "luminance": 0.01363
}

Semantic roles & 50–950 ramp

primary

#131557

secondary

#8F8D36

accent

#E241E7

background

#F5F4F8

surface

#E9E7F0

border

#C5C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #131557

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

Preview Lab → · Contrast checker → · Palette generator →