#0B1B4D#0B1B4D

#0B1B4D is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.6% C 0.095 H 266.0°. Best body text is #FFFFFF at 16.43:1 contrast (WCAG AA passes).

Color values

HEX	#0B1B4D
RGB	rgb(11, 27, 77)
HSL	hsl(225, 75%, 17%)
HSV	hsv(225, 86%, 30%)
CMYK	cmyk(85.7%, 64.9%, 0%, 69.8%)
CIE-LAB	lab(11.89, 14.72, -32.74)
CIE-LCH	lch(11.89, 35.90, 294.21°)
OKLab	oklab(24.6% -0.0067 -0.0946)
OKLCH	oklch(24.6% 0.095 266)
XYZ	xyz(1.8690, 1.3906, 7.1897)
Luminance	0.0139 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1B4D #4D3D0B

analogous

#0B3C4D #0B1B4D #1C0B4D

triadic

#0B1B4D #4D0B1B #1B4D0B

tetradic

#0B1B4D #4D0B3C #4D3D0B #0B4D1C

square

#0B1B4D #4D0B3C #4D3D0B #0B4D1C

split-complementary

#0B1B4D #4D1C0B #3C4D0B

monochromatic

#04091B #04091B #0B1B4D #132E83 #1A41B8

Accessibility & contrast

On white

16.43

#0B1B4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#0B1B4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1B4D

16.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1B4D	#FFFFFF	#000000	##FFFFFF
##0B1B4D	1.00	16.43	1.28	16.43
#FFFFFF	16.43	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224F

Deuteranopia (green-blind)

#001C4C

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #0b1b4d;
/* rgb */ color: rgb(11, 27, 77);
/* oklch */ color: oklch(24.6% 0.095 266.0);

Tailwind

colors: {
  custom: {
    50: '#57567f',
    500: '#0b1b4d',
    950: '#000000',
  },
}

SCSS

$custom: #0b1b4d;
$custom-light: #57567f;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1b4d",
  "rgb": {
    "r": 11,
    "g": 27,
    "b": 77
  },
  "hsl": {
    "h": 225.455,
    "s": 75,
    "l": 17.255
  },
  "oklch": {
    "l": 0.24597,
    "c": 0.09483,
    "h": 266
  },
  "luminance": 0.01391
}

Semantic roles & 50–950 ramp

primary

#0B1B4D

secondary

#89722B

accent

#C436F2

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #0B1B4D

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

Preview Lab → · Contrast checker → · Palette generator →