#0F155A#0F155A

#0F155A is a very dark, vivid blue. Relative luminance 0.014; OKLCH L 25.0% C 0.121 H 270.3°. Best body text is #FFFFFF at 16.47:1 contrast (WCAG AA passes).

Color values

HEX	#0F155A
RGB	rgb(15, 21, 90)
HSL	hsl(235, 71%, 21%)
HSV	hsv(235, 83%, 35%)
CMYK	cmyk(83.3%, 76.7%, 0%, 64.7%)
CIE-LAB	lab(11.80, 25.02, -41.75)
CIE-LCH	lch(11.80, 48.67, 300.94°)
OKLab	oklab(25% 0.0005 -0.1209)
OKLCH	oklch(25% 0.121 270.3)
XYZ	xyz(2.3100, 1.3758, 9.8147)
Luminance	0.0138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F155A #5A540F

analogous

#0F3A5A #0F155A #2E0F5A

triadic

#0F155A #5A0F15 #155A0F

tetradic

#0F155A #5A0F3A #5A540F #0F5A2E

square

#0F155A #5A0F3A #5A540F #0F5A2E

split-complementary

#0F155A #5A2E0F #3A5A0F

monochromatic

#04061A #060926 #0F155A #18218E #202DC3

Accessibility & contrast

On white

16.47

#0F155A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#0F155A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F155A

16.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F155A	#FFFFFF	#000000	##FFFFFF
##0F155A	1.00	16.47	1.28	16.47
#FFFFFF	16.47	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00235C

Deuteranopia (green-blind)

#001B59

Tritanopia (blue-blind)

#002936

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #0f155a;
/* rgb */ color: rgb(15, 21, 90);
/* oklch */ color: oklch(25.0% 0.121 270.3);

Tailwind

colors: {
  custom: {
    50: '#5d5289',
    500: '#0f155a',
    950: '#000000',
  },
}

SCSS

$custom: #0f155a;
$custom-light: #5d5289;
$custom-dark: #000000;

JSON

{
  "hex": "#0f155a",
  "rgb": {
    "r": 15,
    "g": 21,
    "b": 90
  },
  "hsl": {
    "h": 235.2,
    "s": 71.429,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24995,
    "c": 0.1209,
    "h": 270.3
  },
  "luminance": 0.01376
}

Semantic roles & 50–950 ramp

primary

#0F155A

secondary

#948C31

accent

#E03AEE

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020C

muted

#79787D

Preview Lab

Preview with #0F155A

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

Preview Lab → · Contrast checker → · Palette generator →