#0F183A#0F183A

#0F183A is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.3% C 0.067 H 269.2°. Best body text is #FFFFFF at 17.33:1 contrast (WCAG AA passes).

Color values

HEX	#0F183A
RGB	rgb(15, 24, 58)
HSL	hsl(227, 59%, 14%)
HSV	hsv(227, 74%, 23%)
CMYK	cmyk(74.1%, 58.6%, 0%, 77.3%)
CIE-LAB	lab(9.48, 9.34, -23.31)
CIE-LCH	lch(9.48, 25.11, 291.83°)
OKLab	oklab(22.31% -0.0009 -0.0668)
OKLCH	oklch(22.31% 0.067 269.2)
XYZ	xyz(1.2871, 1.0602, 4.1390)
Luminance	0.0106 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F183A #3A310F

analogous

#0F2E3A #0F183A #1C0F3A

triadic

#0F183A #3A0F18 #183A0F

tetradic

#0F183A #3A0F2E #3A310F #0F3A1C

square

#0F183A #3A0F2E #3A310F #0F3A1C

split-complementary

#0F183A #3A1C0F #2E3A0F

monochromatic

#060A18 #060A18 #0F183A #1C2C6B #28409B

Accessibility & contrast

On white

17.33

#0F183A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0F183A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F183A

17.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F183A	#FFFFFF	#000000	##FFFFFF
##0F183A	1.00	17.33	1.21	17.33
#FFFFFF	17.33	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#061C3B

Deuteranopia (green-blind)

#001939

Tritanopia (blue-blind)

#002026

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0f183a;
/* rgb */ color: rgb(15, 24, 58);
/* oklch */ color: oklch(22.3% 0.067 269.2);

Tailwind

colors: {
  custom: {
    50: '#535470',
    500: '#0f183a',
    950: '#000000',
  },
}

SCSS

$custom: #0f183a;
$custom-light: #535470;
$custom-dark: #000000;

JSON

{
  "hex": "#0f183a",
  "rgb": {
    "r": 15,
    "g": 24,
    "b": 58
  },
  "hsl": {
    "h": 227.442,
    "s": 58.904,
    "l": 14.314
  },
  "oklch": {
    "l": 0.22313,
    "c": 0.06683,
    "h": 269.2
  },
  "luminance": 0.0106
}

Semantic roles & 50–950 ramp

primary

#0F183A

secondary

#746630

accent

#C146E2

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#030207

muted

#78787A

Preview Lab

Preview with #0F183A

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

Preview Lab → · Contrast checker → · Palette generator →