#0B0B3F#0B0B3F

#0B0B3F is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.7% C 0.095 H 273.4°. Best body text is #FFFFFF at 18.52:1 contrast (WCAG AA passes).

Color values

HEX	#0B0B3F
RGB	rgb(11, 11, 63)
HSL	hsl(240, 70%, 15%)
HSV	hsv(240, 83%, 25%)
CMYK	cmyk(82.5%, 82.5%, 0%, 75.3%)
CIE-LAB	lab(6.05, 19.91, -32.49)
CIE-LCH	lch(6.05, 38.11, 301.50°)
OKLab	oklab(19.72% 0.0056 -0.0949)
OKLCH	oklch(19.72% 0.095 273.4)
XYZ	xyz(1.1546, 0.6693, 4.7700)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0B3F #3F3F0B

analogous

#0B253F #0B0B3F #250B3F

triadic

#0B0B3F #3F0B0B #0B3F0B

tetradic

#0B0B3F #3F0B25 #3F3F0B #0B3F25

square

#0B0B3F #3F0B25 #3F3F0B #0B3F25

split-complementary

#0B0B3F #3F250B #253F0B

monochromatic

#05051A #05051A #0B0B3F #141473 #1D1DA7

Accessibility & contrast

On white

18.52

#0B0B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#0B0B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0B3F

18.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0B3F	#FFFFFF	#000000	##FFFFFF
##0B0B3F	1.00	18.52	1.13	18.52
#FFFFFF	18.52	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001641

Deuteranopia (green-blind)

#00113E

Tritanopia (blue-blind)

#001A24

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #0b0b3f;
/* rgb */ color: rgb(11, 11, 63);
/* oklch */ color: oklch(19.7% 0.095 273.4);

Tailwind

colors: {
  custom: {
    50: '#544b75',
    500: '#0b0b3f',
    950: '#000000',
  },
}

SCSS

$custom: #0b0b3f;
$custom-light: #544b75;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0b3f",
  "rgb": {
    "r": 11,
    "g": 11,
    "b": 63
  },
  "hsl": {
    "h": 240,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.19721,
    "c": 0.09509,
    "h": 273.4
  },
  "luminance": 0.00669
}

Semantic roles & 50–950 ramp

primary

#0B0B3F

secondary

#7C7C2A

accent

#ED3BED

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0B0B3F

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

Preview Lab → · Contrast checker → · Palette generator →