#131D5B#131D5B

#131D5B is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.111 H 270.0°. Best body text is #FFFFFF at 15.50:1 contrast (WCAG AA passes).

Color values

HEX	#131D5B
RGB	rgb(19, 29, 91)
HSL	hsl(232, 65%, 22%)
HSV	hsv(232, 79%, 36%)
CMYK	cmyk(79.1%, 68.1%, 0%, 64.3%)
CIE-LAB	lab(14.24, 20.21, -38.39)
CIE-LCH	lch(14.24, 43.39, 297.76°)
OKLab	oklab(26.87% -0.0001 -0.111)
OKLCH	oklch(26.87% 0.111 270)
XYZ	xyz(2.5956, 1.7722, 10.1008)
Luminance	0.0177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131D5B #5B5113

analogous

#13415B #131D5B #2D135B

triadic

#131D5B #5B131D #1D5B13

tetradic

#131D5B #5B1341 #5B5113 #135B2D

square

#131D5B #5B1341 #5B5113 #135B2D

split-complementary

#131D5B #5B2D13 #415B13

monochromatic

#050819 #080D28 #131D5B #1E2D8E #283DC0

Accessibility & contrast

On white

15.50

#131D5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#131D5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131D5B

15.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131D5B	#FFFFFF	#000000	##FFFFFF
##131D5B	1.00	15.50	1.35	15.50
#FFFFFF	15.50	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285D

Deuteranopia (green-blind)

#00215A

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #131d5b;
/* rgb */ color: rgb(19, 29, 91);
/* oklch */ color: oklch(26.9% 0.111 270.0);

Tailwind

colors: {
  custom: {
    50: '#5d588a',
    500: '#131d5b',
    950: '#000000',
  },
}

SCSS

$custom: #131d5b;
$custom-light: #5d588a;
$custom-dark: #000000;

JSON

{
  "hex": "#131d5b",
  "rgb": {
    "r": 19,
    "g": 29,
    "b": 91
  },
  "hsl": {
    "h": 231.667,
    "s": 65.455,
    "l": 21.569
  },
  "oklch": {
    "l": 0.2687,
    "c": 0.11096,
    "h": 270
  },
  "luminance": 0.01773
}

Semantic roles & 50–950 ramp

primary

#131D5B

secondary

#938637

accent

#D13FE8

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #131D5B

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

Preview Lab → · Contrast checker → · Palette generator →