#0B1745#0B1745

#0B1745 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.9% C 0.088 H 267.6°. Best body text is #FFFFFF at 17.17:1 contrast (WCAG AA passes).

Color values

HEX	#0B1745
RGB	rgb(11, 23, 69)
HSL	hsl(228, 73%, 16%)
HSV	hsv(228, 84%, 27%)
CMYK	cmyk(84.1%, 66.7%, 0%, 72.9%)
CIE-LAB	lab(9.90, 14.27, -30.44)
CIE-LCH	lch(9.90, 33.62, 295.12°)
OKLab	oklab(22.87% -0.0037 -0.0879)
OKLCH	oklch(22.87% 0.088 267.6)
XYZ	xyz(1.5182, 1.1134, 5.7640)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1745 #45390B

analogous

#0B3445 #0B1745 #1C0B45

triadic

#0B1745 #450B17 #17450B

tetradic

#0B1745 #450B34 #45390B #0B451C

square

#0B1745 #450B34 #45390B #0B451C

split-complementary

#0B1745 #451C0B #34450B

monochromatic

#04091A #04091A #0B1745 #13297A #1C3AAF

Accessibility & contrast

On white

17.17

#0B1745 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#0B1745 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1745

17.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1745	#FFFFFF	#000000	##FFFFFF
##0B1745	1.00	17.17	1.22	17.17
#FFFFFF	17.17	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E47

Deuteranopia (green-blind)

#001944

Tritanopia (blue-blind)

#00232B

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0b1745;
/* rgb */ color: rgb(11, 23, 69);
/* oklch */ color: oklch(22.9% 0.088 267.6);

Tailwind

colors: {
  custom: {
    50: '#555379',
    500: '#0b1745',
    950: '#000000',
  },
}

SCSS

$custom: #0b1745;
$custom-light: #555379;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1745",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 69
  },
  "hsl": {
    "h": 227.586,
    "s": 72.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.22872,
    "c": 0.08797,
    "h": 267.6
  },
  "luminance": 0.01114
}

Semantic roles & 50–950 ramp

primary

#0B1745

secondary

#816F2A

accent

#C939EF

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030209

muted

#78787B

Preview Lab

Preview with #0B1745

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

Preview Lab → · Contrast checker → · Palette generator →