#0F173E#0F173E

#0F173E is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.4% C 0.075 H 270.5°. Best body text is #FFFFFF at 17.32:1 contrast (WCAG AA passes).

Color values

HEX	#0F173E
RGB	rgb(15, 23, 62)
HSL	hsl(230, 61%, 15%)
HSV	hsv(230, 76%, 24%)
CMYK	cmyk(75.8%, 62.9%, 0%, 75.7%)
CIE-LAB	lab(9.50, 11.86, -26.14)
CIE-LCH	lch(9.50, 28.71, 294.40°)
OKLab	oklab(22.43% 0.0006 -0.0752)
OKLCH	oklch(22.43% 0.075 270.5)
XYZ	xyz(1.3726, 1.0620, 4.6891)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F173E #3E360F

analogous

#0F2F3E #0F173E #1E0F3E

triadic

#0F173E #3E0F17 #173E0F

tetradic

#0F173E #3E0F2F #3E360F #0F3E1E

square

#0F173E #3E0F2F #3E360F #0F3E1E

split-complementary

#0F173E #3E1E0F #2F3E0F

monochromatic

#060919 #060919 #0F173E #1B296F #273CA1

Accessibility & contrast

On white

17.32

#0F173E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0F173E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F173E

17.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F173E	#FFFFFF	#000000	##FFFFFF
##0F173E	1.00	17.32	1.21	17.32
#FFFFFF	17.32	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D3F

Deuteranopia (green-blind)

#00183D

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0f173e;
/* rgb */ color: rgb(15, 23, 62);
/* oklch */ color: oklch(22.4% 0.075 270.5);

Tailwind

colors: {
  custom: {
    50: '#545374',
    500: '#0f173e',
    950: '#000000',
  },
}

SCSS

$custom: #0f173e;
$custom-light: #545374;
$custom-dark: #000000;

JSON

{
  "hex": "#0f173e",
  "rgb": {
    "r": 15,
    "g": 23,
    "b": 62
  },
  "hsl": {
    "h": 229.787,
    "s": 61.039,
    "l": 15.098
  },
  "oklch": {
    "l": 0.22432,
    "c": 0.07517,
    "h": 270.5
  },
  "luminance": 0.01062
}

Semantic roles & 50–950 ramp

primary

#0F173E

secondary

#786C30

accent

#C944E4

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0F173E

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

Preview Lab → · Contrast checker → · Palette generator →