#0B1B45#0B1B45

#0B1B45 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.082 H 265.0°. Best body text is #FFFFFF at 16.71:1 contrast (WCAG AA passes).

Color values

HEX	#0B1B45
RGB	rgb(11, 27, 69)
HSL	hsl(223, 73%, 16%)
HSV	hsv(223, 84%, 27%)
CMYK	cmyk(84.1%, 60.9%, 0%, 72.9%)
CIE-LAB	lab(11.17, 11.14, -28.38)
CIE-LCH	lch(11.17, 30.49, 291.44°)
OKLab	oklab(23.82% -0.0072 -0.0818)
OKLCH	oklch(23.82% 0.082 265)
XYZ	xyz(1.6037, 1.2845, 5.7925)
Luminance	0.0129 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1B45 #45350B

analogous

#0B3845 #0B1B45 #180B45

triadic

#0B1B45 #450B1B #1B450B

tetradic

#0B1B45 #450B38 #45350B #0B4518

square

#0B1B45 #450B38 #45350B #0B4518

split-complementary

#0B1B45 #45180B #38450B

monochromatic

#040A1A #040A1A #0B1B45 #13307A #1C44AF

Accessibility & contrast

On white

16.71

#0B1B45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#0B1B45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1B45

16.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1B45	#FFFFFF	#000000	##FFFFFF
##0B1B45	1.00	16.71	1.26	16.71
#FFFFFF	16.71	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002146

Deuteranopia (green-blind)

#001B44

Tritanopia (blue-blind)

#00252C

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #0b1b45;
/* rgb */ color: rgb(11, 27, 69);
/* oklch */ color: oklch(23.8% 0.082 265.0);

Tailwind

colors: {
  custom: {
    50: '#545679',
    500: '#0b1b45',
    950: '#000000',
  },
}

SCSS

$custom: #0b1b45;
$custom-light: #545679;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1b45",
  "rgb": {
    "r": 11,
    "g": 27,
    "b": 69
  },
  "hsl": {
    "h": 223.448,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.23821,
    "c": 0.0821,
    "h": 265
  },
  "luminance": 0.01285
}

Semantic roles & 50–950 ramp

primary

#0B1B45

secondary

#81692A

accent

#BD39EF

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030309

muted

#78787B

Preview Lab

Preview with #0B1B45

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

Preview Lab → · Contrast checker → · Palette generator →