#0D174B#0D174B

#0D174B is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.6% C 0.097 H 269.1°. Best body text is #FFFFFF at 16.92:1 contrast (WCAG AA passes).

Color values

HEX	#0D174B
RGB	rgb(13, 23, 75)
HSL	hsl(230, 70%, 17%)
HSV	hsv(230, 83%, 29%)
CMYK	cmyk(82.7%, 69.3%, 0%, 70.6%)
CIE-LAB	lab(10.60, 17.16, -33.47)
CIE-LCH	lch(10.60, 37.61, 297.14°)
OKLab	oklab(23.61% -0.0016 -0.0967)
OKLCH	oklch(23.61% 0.097 269.1)
XYZ	xyz(1.7419, 1.2062, 6.7963)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0D174B #4B410D

analogous

#0D364B #0D174B #220D4B

triadic

#0D174B #4B0D17 #174B0D

tetradic

#0D174B #4B0D36 #4B410D #0D4B22

square

#0D174B #4B0D36 #4B410D #0D4B22

split-complementary

#0D174B #4B220D #364B0D

monochromatic

#05081A #05081A #0D174B #16277F #1F37B3

Accessibility & contrast

On white

16.92

#0D174B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#0D174B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0D174B

16.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0D174B	#FFFFFF	#000000	##FFFFFF
##0D174B	1.00	16.92	1.24	16.92
#FFFFFF	16.92	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204D

Deuteranopia (green-blind)

#001A4A

Tritanopia (blue-blind)

#00242E

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #0d174b;
/* rgb */ color: rgb(13, 23, 75);
/* oklch */ color: oklch(23.6% 0.097 269.1);

Tailwind

colors: {
  custom: {
    50: '#57537e',
    500: '#0d174b',
    950: '#000000',
  },
}

SCSS

$custom: #0d174b;
$custom-light: #57537e;
$custom-dark: #000000;

JSON

{
  "hex": "#0d174b",
  "rgb": {
    "r": 13,
    "g": 23,
    "b": 75
  },
  "hsl": {
    "h": 230.323,
    "s": 70.455,
    "l": 17.255
  },
  "oklch": {
    "l": 0.23605,
    "c": 0.09675,
    "h": 269.1
  },
  "luminance": 0.01206
}

Semantic roles & 50–950 ramp

primary

#0D174B

secondary

#86782E

accent

#D03BED

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #0D174B

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

Preview Lab → · Contrast checker → · Palette generator →