#0D174D#0D174D

#0D174D is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.100 H 269.0°. Best body text is #FFFFFF at 16.84:1 contrast (WCAG AA passes).

Color values

HEX	#0D174D
RGB	rgb(13, 23, 77)
HSL	hsl(231, 71%, 18%)
HSV	hsv(231, 83%, 30%)
CMYK	cmyk(83.1%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(10.81, 18.02, -34.52)
CIE-LCH	lch(10.81, 38.94, 297.56°)
OKLab	oklab(23.82% -0.0017 -0.0998)
OKLCH	oklch(23.82% 0.1 269)
XYZ	xyz(1.8115, 1.2340, 7.1625)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D174D #4D430D

analogous

#0D374D #0D174D #230D4D

triadic

#0D174D #4D0D17 #174D0D

tetradic

#0D174D #4D0D37 #4D430D #0D4D23

square

#0D174D #4D0D37 #4D430D #0D4D23

split-complementary

#0D174D #4D230D #374D0D

monochromatic

#04081A #04081A #0D174D #162781 #1F36B6

Accessibility & contrast

On white

16.84

#0D174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#0D174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D174D

16.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D174D	#FFFFFF	#000000	##FFFFFF
##0D174D	1.00	16.84	1.25	16.84
#FFFFFF	16.84	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204F

Deuteranopia (green-blind)

#001A4C

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #0d174d;
/* rgb */ color: rgb(13, 23, 77);
/* oklch */ color: oklch(23.8% 0.100 269.0);

Tailwind

colors: {
  custom: {
    50: '#58537f',
    500: '#0d174d',
    950: '#000000',
  },
}

SCSS

$custom: #0d174d;
$custom-light: #58537f;
$custom-dark: #000000;

JSON

{
  "hex": "#0d174d",
  "rgb": {
    "r": 13,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 230.625,
    "s": 71.111,
    "l": 17.647
  },
  "oklch": {
    "l": 0.23817,
    "c": 0.09982,
    "h": 269
  },
  "luminance": 0.01234
}

Semantic roles & 50–950 ramp

primary

#0D174D

secondary

#887A2E

accent

#D23AEE

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #0D174D

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

Preview Lab → · Contrast checker → · Palette generator →