#0F174D#0F174D

#0F174D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.9% C 0.099 H 270.3°. Best body text is #FFFFFF at 16.80:1 contrast (WCAG AA passes).

Color values

HEX	#0F174D
RGB	rgb(15, 23, 77)
HSL	hsl(232, 67%, 18%)
HSV	hsv(232, 81%, 30%)
CMYK	cmyk(80.5%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(10.92, 18.28, -34.32)
CIE-LCH	lch(10.92, 38.89, 298.03°)
OKLab	oklab(23.93% 0.0006 -0.0992)
OKLCH	oklch(23.93% 0.099 270.3)
XYZ	xyz(1.8425, 1.2500, 7.1639)
Luminance	0.0125 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F174D #4D450F

analogous

#0F364D #0F174D #260F4D

triadic

#0F174D #4D0F17 #174D0F

tetradic

#0F174D #4D0F36 #4D450F #0F4D26

square

#0F174D #4D0F36 #4D450F #0F4D26

split-complementary

#0F174D #4D260F #364D0F

monochromatic

#05081A #05081A #0F174D #192680 #2336B3

Accessibility & contrast

On white

16.80

#0F174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#0F174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F174D

16.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F174D	#FFFFFF	#000000	##FFFFFF
##0F174D	1.00	16.80	1.25	16.80
#FFFFFF	16.80	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.80	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: #0f174d;
/* rgb */ color: rgb(15, 23, 77);
/* oklch */ color: oklch(23.9% 0.099 270.3);

Tailwind

colors: {
  custom: {
    50: '#58537f',
    500: '#0f174d',
    950: '#000000',
  },
}

SCSS

$custom: #0f174d;
$custom-light: #58537f;
$custom-dark: #000000;

JSON

{
  "hex": "#0f174d",
  "rgb": {
    "r": 15,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 232.258,
    "s": 67.391,
    "l": 18.039
  },
  "oklch": {
    "l": 0.23933,
    "c": 0.0992,
    "h": 270.3
  },
  "luminance": 0.0125
}

Semantic roles & 50–950 ramp

primary

#0F174D

secondary

#877C31

accent

#D43EEA

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #0F174D

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

Preview Lab → · Contrast checker → · Palette generator →