#131B3E#131B3E

#131B3E is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.7% C 0.068 H 270.8°. Best body text is #FFFFFF at 16.75:1 contrast (WCAG AA passes).

Color values

HEX	#131B3E
RGB	rgb(19, 27, 62)
HSL	hsl(229, 53%, 16%)
HSV	hsv(229, 69%, 24%)
CMYK	cmyk(69.4%, 56.5%, 0%, 75.7%)
CIE-LAB	lab(11.06, 9.58, -23.60)
CIE-LCH	lch(11.06, 25.47, 292.10°)
OKLab	oklab(23.69% 0.0009 -0.0675)
OKLCH	oklch(23.69% 0.068 270.8)
XYZ	xyz(1.5297, 1.2700, 4.7210)
Luminance	0.0127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131B3E #3E3613

analogous

#13303E #131B3E #20133E

triadic

#131B3E #3E131B #1B3E13

tetradic

#131B3E #3E1330 #3E3613 #133E20

square

#131B3E #3E1330 #3E3613 #133E20

split-complementary

#131B3E #3E2013 #303E13

monochromatic

#070A17 #070A17 #131B3E #212F6D #30449C

Accessibility & contrast

On white

16.75

#131B3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#131B3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131B3E

16.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131B3E	#FFFFFF	#000000	##FFFFFF
##131B3E	1.00	16.75	1.25	16.75
#FFFFFF	16.75	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#09203F

Deuteranopia (green-blind)

#031C3D

Tritanopia (blue-blind)

#002329

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #131b3e;
/* rgb */ color: rgb(19, 27, 62);
/* oklch */ color: oklch(23.7% 0.068 270.8);

Tailwind

colors: {
  custom: {
    50: '#565673',
    500: '#131b3e',
    950: '#000000',
  },
}

SCSS

$custom: #131b3e;
$custom-light: #565673;
$custom-dark: #000000;

JSON

{
  "hex": "#131b3e",
  "rgb": {
    "r": 19,
    "g": 27,
    "b": 62
  },
  "hsl": {
    "h": 228.837,
    "s": 53.086,
    "l": 15.882
  },
  "oklch": {
    "l": 0.23688,
    "c": 0.06753,
    "h": 270.8
  },
  "luminance": 0.0127
}

Semantic roles & 50–950 ramp

primary

#131B3E

secondary

#776B36

accent

#C14BDC

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #131B3E

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

Preview Lab → · Contrast checker → · Palette generator →