#131B5C#131B5C

#131B5C is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.6% C 0.115 H 270.6°. Best body text is #FFFFFF at 15.68:1 contrast (WCAG AA passes).

Color values

HEX	#131B5C
RGB	rgb(19, 27, 92)
HSL	hsl(233, 66%, 22%)
HSV	hsv(233, 79%, 36%)
CMYK	cmyk(79.3%, 70.7%, 0%, 63.9%)
CIE-LAB	lab(13.80, 22.06, -39.80)
CIE-LCH	lch(13.80, 45.50, 299.00°)
OKLab	oklab(26.57% 0.0013 -0.1151)
OKLCH	oklch(26.57% 0.115 270.6)
XYZ	xyz(2.5916, 1.6947, 10.3137)
Luminance	0.0169 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B5C #5C5413

analogous

#13405C #131B5C #30135C

triadic

#131B5C #5C131B #1B5C13

tetradic

#131B5C #5C1340 #5C5413 #135C30

square

#131B5C #5C1340 #5C5413 #135C30

split-complementary

#131B5C #5C3013 #405C13

monochromatic

#050719 #090C29 #131B5C #1D2A8F #2839C1

Accessibility & contrast

On white

15.68

#131B5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#131B5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B5C

15.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B5C	#FFFFFF	#000000	##FFFFFF
##131B5C	1.00	15.68	1.34	15.68
#FFFFFF	15.68	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275E

Deuteranopia (green-blind)

#00205B

Tritanopia (blue-blind)

#002C38

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #131b5c;
/* rgb */ color: rgb(19, 27, 92);
/* oklch */ color: oklch(26.6% 0.115 270.6);

Tailwind

colors: {
  custom: {
    50: '#5e578b',
    500: '#131b5c',
    950: '#000000',
  },
}

SCSS

$custom: #131b5c;
$custom-light: #5e578b;
$custom-dark: #000000;

JSON

{
  "hex": "#131b5c",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 92
  },
  "hsl": {
    "h": 233.425,
    "s": 65.766,
    "l": 21.765
  },
  "oklch": {
    "l": 0.26573,
    "c": 0.11509,
    "h": 270.6
  },
  "luminance": 0.01695
}

Semantic roles & 50–950 ramp

primary

#131B5C

secondary

#948A37

accent

#D63FE9

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #131B5C

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

Preview Lab → · Contrast checker → · Palette generator →