#0F105B#0F105B

#0F105B is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.3% C 0.128 H 271.2°. Best body text is #FFFFFF at 16.86:1 contrast (WCAG AA passes).

Color values

HEX	#0F105B
RGB	rgb(15, 16, 91)
HSL	hsl(239, 72%, 21%)
HSV	hsv(239, 84%, 36%)
CMYK	cmyk(83.5%, 82.4%, 0%, 64.3%)
CIE-LAB	lab(10.76, 28.66, -44.14)
CIE-LCH	lch(10.76, 52.63, 302.99°)
OKLab	oklab(24.29% 0.0026 -0.1278)
OKLCH	oklch(24.29% 0.128 271.2)
XYZ	xyz(2.2700, 1.2272, 10.0127)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0F105B #5B5A0F

analogous

#0F365B #0F105B #340F5B

triadic

#0F105B #5B0F10 #105B0F

tetradic

#0F105B #5B0F36 #5B5A0F #0F5B34

square

#0F105B #5B0F36 #5B5A0F #0F5B34

split-complementary

#0F105B #5B340F #365B0F

monochromatic

#04051A #060726 #0F105B #181990 #2022C4

Accessibility & contrast

On white

16.86

#0F105B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#0F105B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0F105B

16.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0F105B	#FFFFFF	#000000	##FFFFFF
##0F105B	1.00	16.86	1.25	16.86
#FFFFFF	16.86	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215D

Deuteranopia (green-blind)

#00195A

Tritanopia (blue-blind)

#002735

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #0f105b;
/* rgb */ color: rgb(15, 16, 91);
/* oklch */ color: oklch(24.3% 0.128 271.2);

Tailwind

colors: {
  custom: {
    50: '#5e4f8a',
    500: '#0f105b',
    950: '#000000',
  },
}

SCSS

$custom: #0f105b;
$custom-light: #5e4f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#0f105b",
  "rgb": {
    "r": 15,
    "g": 16,
    "b": 91
  },
  "hsl": {
    "h": 239.211,
    "s": 71.698,
    "l": 20.784
  },
  "oklch": {
    "l": 0.24291,
    "c": 0.12784,
    "h": 271.2
  },
  "luminance": 0.01227
}

Semantic roles & 50–950 ramp

primary

#0F105B

secondary

#959331

accent

#EC39EE

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020C

muted

#79787D

Preview Lab

Preview with #0F105B

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

Preview Lab → · Contrast checker → · Palette generator →