#131F3E#131F3E

#131F3E is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.7% C 0.061 H 266.1°. Best body text is #FFFFFF at 16.24:1 contrast (WCAG AA passes).

Color values

HEX	#131F3E
RGB	rgb(19, 31, 62)
HSL	hsl(223, 53%, 16%)
HSV	hsv(223, 69%, 24%)
CMYK	cmyk(69.4%, 50%, 0%, 75.7%)
CIE-LAB	lab(12.39, 6.50, -21.47)
CIE-LCH	lch(12.39, 22.44, 286.85°)
OKLab	oklab(24.7% -0.0042 -0.0612)
OKLCH	oklch(24.7% 0.061 266.1)
XYZ	xyz(1.6277, 1.4661, 4.7537)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#131F3E #3E3213

analogous

#13343E #131F3E #1C133E

triadic

#131F3E #3E131F #1F3E13

tetradic

#131F3E #3E1334 #3E3213 #133E1C

square

#131F3E #3E1334 #3E3213 #133E1C

split-complementary

#131F3E #3E1C13 #343E13

monochromatic

#070C17 #070C17 #131F3E #21366D #304E9C

Accessibility & contrast

On white

16.24

#131F3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#131F3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #131F3E

16.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##131F3E	#FFFFFF	#000000	##FFFFFF
##131F3E	1.00	16.24	1.29	16.24
#FFFFFF	16.24	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#11223F

Deuteranopia (green-blind)

#0B1E3D

Tritanopia (blue-blind)

#00262B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #131f3e;
/* rgb */ color: rgb(19, 31, 62);
/* oklch */ color: oklch(24.7% 0.061 266.1);

Tailwind

colors: {
  custom: {
    50: '#565a73',
    500: '#131f3e',
    950: '#000000',
  },
}

SCSS

$custom: #131f3e;
$custom-light: #565a73;
$custom-dark: #000000;

JSON

{
  "hex": "#131f3e",
  "rgb": {
    "r": 19,
    "g": 31,
    "b": 62
  },
  "hsl": {
    "h": 223.256,
    "s": 53.086,
    "l": 15.882
  },
  "oklch": {
    "l": 0.24701,
    "c": 0.06135,
    "h": 266.1
  },
  "luminance": 0.01466
}

Semantic roles & 50–950 ramp

primary

#131F3E

secondary

#776536

accent

#B44BDC

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #131F3E

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

Preview Lab → · Contrast checker → · Palette generator →