#0F172C#0F172C

#0F172C is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.9% C 0.043 H 266.9°. Best body text is #FFFFFF at 17.81:1 contrast (WCAG AA passes).

Color values

HEX	#0F172C
RGB	rgb(15, 23, 44)
HSL	hsl(223, 49%, 12%)
HSV	hsv(223, 66%, 17%)
CMYK	cmyk(65.9%, 47.7%, 0%, 82.7%)
CIE-LAB	lab(8.09, 4.15, -15.34)
CIE-LCH	lch(8.09, 15.89, 285.13°)
OKLab	oklab(20.91% -0.0024 -0.0434)
OKLCH	oklch(20.91% 0.043 266.9)
XYZ	xyz(0.9579, 0.8961, 2.5049)
Luminance	0.0090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F172C #2C240F

analogous

#0F262C #0F172C #160F2C

triadic

#0F172C #2C0F17 #172C0F

tetradic

#0F172C #2C0F26 #2C240F #0F2C16

square

#0F172C #2C0F26 #2C240F #0F2C16

split-complementary

#0F172C #2C160F #262C0F

monochromatic

#080C17 #080C17 #0F172C #1F2F5A #2E4787

Accessibility & contrast

On white

17.81

#0F172C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0F172C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F172C

17.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F172C	#FFFFFF	#000000	##FFFFFF
##0F172C	1.00	17.81	1.18	17.81
#FFFFFF	17.81	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F192D

Deuteranopia (green-blind)

#0B172C

Tritanopia (blue-blind)

#031C1F

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0f172c;
/* rgb */ color: rgb(15, 23, 44);
/* oklch */ color: oklch(20.9% 0.043 266.9);

Tailwind

colors: {
  custom: {
    50: '#505365',
    500: '#0f172c',
    950: '#000000',
  },
}

SCSS

$custom: #0f172c;
$custom-light: #505365;
$custom-dark: #000000;

JSON

{
  "hex": "#0f172c",
  "rgb": {
    "r": 15,
    "g": 23,
    "b": 44
  },
  "hsl": {
    "h": 223.448,
    "s": 49.153,
    "l": 11.569
  },
  "oklch": {
    "l": 0.20914,
    "c": 0.04349,
    "h": 266.9
  },
  "luminance": 0.00896
}

Semantic roles & 50–950 ramp

primary

#0F172C

secondary

#655731

accent

#B34FD9

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020205

muted

#78787A

Preview Lab

Preview with #0F172C

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

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