#0B1749#0B1749

#0B1749 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.3% C 0.094 H 267.8°. Best body text is #FFFFFF at 17.03:1 contrast (WCAG AA passes).

Color values

HEX	#0B1749
RGB	rgb(11, 23, 73)
HSL	hsl(228, 74%, 16%)
HSV	hsv(228, 85%, 29%)
CMYK	cmyk(84.9%, 68.5%, 0%, 71.4%)
CIE-LAB	lab(10.30, 16.03, -32.59)
CIE-LCH	lch(10.30, 36.32, 296.20°)
OKLab	oklab(23.29% -0.0037 -0.0942)
OKLCH	oklch(23.29% 0.094 267.8)
XYZ	xyz(1.6466, 1.1648, 6.4401)
Luminance	0.0117 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1749 #493D0B

analogous

#0B3649 #0B1749 #1E0B49

triadic

#0B1749 #490B17 #17490B

tetradic

#0B1749 #490B36 #493D0B #0B491E

square

#0B1749 #490B36 #493D0B #0B491E

split-complementary

#0B1749 #491E0B #36490B

monochromatic

#04081B #04081B #0B1749 #13287E #1B39B3

Accessibility & contrast

On white

17.03

#0B1749 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#0B1749 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1749

17.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1749	#FFFFFF	#000000	##FFFFFF
##0B1749	1.00	17.03	1.23	17.03
#FFFFFF	17.03	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F4B

Deuteranopia (green-blind)

#001948

Tritanopia (blue-blind)

#00242D

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #0b1749;
/* rgb */ color: rgb(11, 23, 73);
/* oklch */ color: oklch(23.3% 0.094 267.8);

Tailwind

colors: {
  custom: {
    50: '#56537c',
    500: '#0b1749',
    950: '#000000',
  },
}

SCSS

$custom: #0b1749;
$custom-light: #56537c;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1749",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 73
  },
  "hsl": {
    "h": 228.387,
    "s": 73.81,
    "l": 16.471
  },
  "oklch": {
    "l": 0.23286,
    "c": 0.09427,
    "h": 267.8
  },
  "luminance": 0.01165
}

Semantic roles & 50–950 ramp

primary

#0B1749

secondary

#85742A

accent

#CD37F0

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#030209

muted

#78787B

Preview Lab

Preview with #0B1749

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

Preview Lab → · Contrast checker → · Palette generator →