#131B58#131B58

#131B58 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.2% C 0.109 H 270.8°. Best body text is #FFFFFF at 15.84:1 contrast (WCAG AA passes).

Color values

HEX	#131B58
RGB	rgb(19, 27, 88)
HSL	hsl(233, 64%, 21%)
HSV	hsv(233, 78%, 35%)
CMYK	cmyk(78.4%, 69.3%, 0%, 65.5%)
CIE-LAB	lab(13.39, 20.43, -37.77)
CIE-LCH	lch(13.39, 42.95, 298.41°)
OKLab	oklab(26.15% 0.0016 -0.1092)
OKLCH	oklch(26.15% 0.109 270.8)
XYZ	xyz(2.4213, 1.6266, 9.4170)
Luminance	0.0163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B58 #585013

analogous

#133D58 #131B58 #2D1358

triadic

#131B58 #58131B #1B5813

tetradic

#131B58 #58133D #585013 #13582D

square

#131B58 #58133D #585013 #13582D

split-complementary

#131B58 #582D13 #3D5813

monochromatic

#050819 #080C26 #131B58 #1E2A8A #293ABD

Accessibility & contrast

On white

15.84

#131B58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#131B58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B58

15.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B58	#FFFFFF	#000000	##FFFFFF
##131B58	1.00	15.84	1.33	15.84
#FFFFFF	15.84	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265A

Deuteranopia (green-blind)

#001F57

Tritanopia (blue-blind)

#002B36

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #131b58;
/* rgb */ color: rgb(19, 27, 88);
/* oklch */ color: oklch(26.2% 0.109 270.8);

Tailwind

colors: {
  custom: {
    50: '#5d5788',
    500: '#131b58',
    950: '#000000',
  },
}

SCSS

$custom: #131b58;
$custom-light: #5d5788;
$custom-dark: #000000;

JSON

{
  "hex": "#131b58",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 88
  },
  "hsl": {
    "h": 233.043,
    "s": 64.486,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26153,
    "c": 0.10917,
    "h": 270.8
  },
  "luminance": 0.01627
}

Semantic roles & 50–950 ramp

primary

#131B58

secondary

#908637

accent

#D440E7

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #131B58

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

Preview Lab → · Contrast checker → · Palette generator →