#131D58#131D58

#131D58 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.106 H 270.0°. Best body text is #FFFFFF at 15.62:1 contrast (WCAG AA passes).

Color values

HEX	#131D58
RGB	rgb(19, 29, 88)
HSL	hsl(231, 64%, 21%)
HSV	hsv(231, 78%, 35%)
CMYK	cmyk(78.4%, 67%, 0%, 65.5%)
CIE-LAB	lab(13.95, 18.97, -36.85)
CIE-LCH	lch(13.95, 41.45, 297.24°)
OKLab	oklab(26.57% 0 -0.1064)
OKLCH	oklch(26.57% 0.106 270)
XYZ	xyz(2.4688, 1.7215, 9.4328)
Luminance	0.0172 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D58 #584E13

analogous

#133F58 #131D58 #2B1358

triadic

#131D58 #58131D #1D5813

tetradic

#131D58 #58133F #584E13 #13582B

square

#131D58 #58133F #584E13 #13582B

split-complementary

#131D58 #582B13 #3F5813

monochromatic

#050819 #080C26 #131D58 #1E2E8A #293EBD

Accessibility & contrast

On white

15.62

#131D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#131D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D58

15.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D58	#FFFFFF	#000000	##FFFFFF
##131D58	1.00	15.62	1.34	15.62
#FFFFFF	15.62	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275A

Deuteranopia (green-blind)

#002057

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #131d58;
/* rgb */ color: rgb(19, 29, 88);
/* oklch */ color: oklch(26.6% 0.106 270.0);

Tailwind

colors: {
  custom: {
    50: '#5d5888',
    500: '#131d58',
    950: '#000000',
  },
}

SCSS

$custom: #131d58;
$custom-light: #5d5888;
$custom-dark: #000000;

JSON

{
  "hex": "#131d58",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 88
  },
  "hsl": {
    "h": 231.304,
    "s": 64.486,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26566,
    "c": 0.10645,
    "h": 270
  },
  "luminance": 0.01722
}

Semantic roles & 50–950 ramp

primary

#131D58

secondary

#908337

accent

#CF40E7

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #131D58

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

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