#131B59#131B59

#131B59 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 26.3% C 0.111 H 270.8°. Best body text is #FFFFFF at 15.80:1 contrast (WCAG AA passes).

Color values

HEX	#131B59
RGB	rgb(19, 27, 89)
HSL	hsl(233, 65%, 21%)
HSV	hsv(233, 79%, 35%)
CMYK	cmyk(78.7%, 69.7%, 0%, 65.1%)
CIE-LAB	lab(13.49, 20.84, -38.28)
CIE-LCH	lch(13.49, 43.59, 298.57°)
OKLab	oklab(26.26% 0.0015 -0.1106)
OKLCH	oklch(26.26% 0.111 270.8)
XYZ	xyz(2.4630, 1.6433, 9.6366)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B59 #595113

analogous

#133E59 #131B59 #2E1359

triadic

#131B59 #59131B #1B5913

tetradic

#131B59 #59133E #595113 #13592E

square

#131B59 #59133E #595113 #13592E

split-complementary

#131B59 #592E13 #3E5913

monochromatic

#050819 #080C27 #131B59 #1E2A8B #293ABE

Accessibility & contrast

On white

15.80

#131B59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#131B59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B59

15.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B59	#FFFFFF	#000000	##FFFFFF
##131B59	1.00	15.80	1.33	15.80
#FFFFFF	15.80	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265B

Deuteranopia (green-blind)

#001F58

Tritanopia (blue-blind)

#002B37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #131b59;
/* rgb */ color: rgb(19, 27, 89);
/* oklch */ color: oklch(26.3% 0.111 270.8);

Tailwind

colors: {
  custom: {
    50: '#5d5789',
    500: '#131b59',
    950: '#000000',
  },
}

SCSS

$custom: #131b59;
$custom-light: #5d5789;
$custom-dark: #000000;

JSON

{
  "hex": "#131b59",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 89
  },
  "hsl": {
    "h": 233.143,
    "s": 64.815,
    "l": 21.176
  },
  "oklch": {
    "l": 0.26257,
    "c": 0.11066,
    "h": 270.8
  },
  "luminance": 0.01644
}

Semantic roles & 50–950 ramp

primary

#131B59

secondary

#918737

accent

#D540E8

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #131B59

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

Preview Lab → · Contrast checker → · Palette generator →