#0B1B4A#0B1B4A

#0B1B4A is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.3% C 0.090 H 265.7°. Best body text is #FFFFFF at 16.54:1 contrast (WCAG AA passes).

Color values

HEX	#0B1B4A
RGB	rgb(11, 27, 74)
HSL	hsl(225, 74%, 17%)
HSV	hsv(225, 85%, 29%)
CMYK	cmyk(85.1%, 63.5%, 0%, 71%)
CIE-LAB	lab(11.62, 13.39, -31.13)
CIE-LCH	lch(11.62, 33.88, 293.27°)
OKLab	oklab(24.3% -0.0068 -0.0898)
OKLCH	oklch(24.3% 0.09 265.7)
XYZ	xyz(1.7655, 1.3492, 6.6446)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.09

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1B4A #4A3A0B

analogous

#0B3B4A #0B1B4A #1B0B4A

triadic

#0B1B4A #4A0B1B #1B4A0B

tetradic

#0B1B4A #4A0B3B #4A3A0B #0B4A1B

square

#0B1B4A #4A0B3B #4A3A0B #0B4A1B

split-complementary

#0B1B4A #4A1B0B #3B4A0B

monochromatic

#040A1B #040A1B #0B1B4A #132E7F #1B42B5

Accessibility & contrast

On white

16.54

#0B1B4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#0B1B4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1B4A

16.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1B4A	#FFFFFF	#000000	##FFFFFF
##0B1B4A	1.00	16.54	1.27	16.54
#FFFFFF	16.54	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224C

Deuteranopia (green-blind)

#001C49

Tritanopia (blue-blind)

#00272F

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #0b1b4a;
/* rgb */ color: rgb(11, 27, 74);
/* oklch */ color: oklch(24.3% 0.090 265.7);

Tailwind

colors: {
  custom: {
    50: '#56567d',
    500: '#0b1b4a',
    950: '#000000',
  },
}

SCSS

$custom: #0b1b4a;
$custom-light: #56567d;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1b4a",
  "rgb": {
    "r": 11,
    "g": 27,
    "b": 74
  },
  "hsl": {
    "h": 224.762,
    "s": 74.118,
    "l": 16.667
  },
  "oklch": {
    "l": 0.243,
    "c": 0.09011,
    "h": 265.7
  },
  "luminance": 0.01349
}

Semantic roles & 50–950 ramp

primary

#0B1B4A

secondary

#866F2B

accent

#C237F1

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#03030A

muted

#78787C

Preview Lab

Preview with #0B1B4A

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

Preview Lab → · Contrast checker → · Palette generator →