#0B1748#0B1748

#0B1748 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.2% C 0.093 H 267.7°. Best body text is #FFFFFF at 17.07:1 contrast (WCAG AA passes).

Color values

HEX	#0B1748
RGB	rgb(11, 23, 72)
HSL	hsl(228, 73%, 16%)
HSV	hsv(228, 85%, 28%)
CMYK	cmyk(84.7%, 68.1%, 0%, 71.8%)
CIE-LAB	lab(10.20, 15.60, -32.06)
CIE-LCH	lch(10.20, 35.65, 295.95°)
OKLab	oklab(23.18% -0.0037 -0.0926)
OKLCH	oklch(23.18% 0.093 267.7)
XYZ	xyz(1.6137, 1.1516, 6.2669)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1748 #483C0B

analogous

#0B3648 #0B1748 #1E0B48

triadic

#0B1748 #480B17 #17480B

tetradic

#0B1748 #480B36 #483C0B #0B481E

square

#0B1748 #480B36 #483C0B #0B481E

split-complementary

#0B1748 #481E0B #36480B

monochromatic

#04081B #04081B #0B1748 #13287D #1B39B2

Accessibility & contrast

On white

17.07

#0B1748 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#0B1748 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1748

17.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1748	#FFFFFF	#000000	##FFFFFF
##0B1748	1.00	17.07	1.23	17.07
#FFFFFF	17.07	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F4A

Deuteranopia (green-blind)

#001947

Tritanopia (blue-blind)

#00242C

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #0b1748;
/* rgb */ color: rgb(11, 23, 72);
/* oklch */ color: oklch(23.2% 0.093 267.7);

Tailwind

colors: {
  custom: {
    50: '#56537b',
    500: '#0b1748',
    950: '#000000',
  },
}

SCSS

$custom: #0b1748;
$custom-light: #56537b;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1748",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 72
  },
  "hsl": {
    "h": 228.197,
    "s": 73.494,
    "l": 16.275
  },
  "oklch": {
    "l": 0.23181,
    "c": 0.09271,
    "h": 267.7
  },
  "luminance": 0.01152
}

Semantic roles & 50–950 ramp

primary

#0B1748

secondary

#84732A

accent

#CC38F0

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#030209

muted

#78787B

Preview Lab

Preview with #0B1748

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

Preview Lab → · Contrast checker → · Palette generator →