#0F172D#0F172D

#0F172D is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.0% C 0.045 H 267.4°. Best body text is #FFFFFF at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#0F172D
RGB	rgb(15, 23, 45)
HSL	hsl(224, 50%, 12%)
HSV	hsv(224, 67%, 18%)
CMYK	cmyk(66.7%, 48.9%, 0%, 82.4%)
CIE-LAB	lab(8.16, 4.56, -15.97)
CIE-LCH	lch(8.16, 16.61, 285.95°)
OKLab	oklab(20.99% -0.0021 -0.0453)
OKLCH	oklch(20.99% 0.045 267.4)
XYZ	xyz(0.9769, 0.9037, 2.6051)
Luminance	0.0090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F172D #2D250F

analogous

#0F262D #0F172D #160F2D

triadic

#0F172D #2D0F17 #172D0F

tetradic

#0F172D #2D0F26 #2D250F #0F2D16

square

#0F172D #2D0F26 #2D250F #0F2D16

split-complementary

#0F172D #2D160F #262D0F

monochromatic

#080C17 #080C17 #0F172D #1E2E5B #2E4689

Accessibility & contrast

On white

17.78

#0F172D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0F172D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F172D

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F172D	#FFFFFF	#000000	##FFFFFF
##0F172D	1.00	17.78	1.18	17.78
#FFFFFF	17.78	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E192E

Deuteranopia (green-blind)

#0A172D

Tritanopia (blue-blind)

#021C1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0f172d;
/* rgb */ color: rgb(15, 23, 45);
/* oklch */ color: oklch(21.0% 0.045 267.4);

Tailwind

colors: {
  custom: {
    50: '#505366',
    500: '#0f172d',
    950: '#000000',
  },
}

SCSS

$custom: #0f172d;
$custom-light: #505366;
$custom-dark: #000000;

JSON

{
  "hex": "#0f172d",
  "rgb": {
    "r": 15,
    "g": 23,
    "b": 45
  },
  "hsl": {
    "h": 224,
    "s": 50,
    "l": 11.765
  },
  "oklch": {
    "l": 0.20988,
    "c": 0.04533,
    "h": 267.4
  },
  "luminance": 0.00904
}

Semantic roles & 50–950 ramp

primary

#0F172D

secondary

#665831

accent

#B44EDA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #0F172D

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

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