#0B1B4E#0B1B4E

#0B1B4E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.7% C 0.096 H 266.0°. Best body text is #FFFFFF at 16.39:1 contrast (WCAG AA passes).

Color values

HEX	#0B1B4E
RGB	rgb(11, 27, 78)
HSL	hsl(226, 75%, 17%)
HSV	hsv(226, 86%, 31%)
CMYK	cmyk(85.9%, 65.4%, 0%, 69.4%)
CIE-LAB	lab(11.99, 15.16, -33.27)
CIE-LCH	lch(11.99, 36.57, 294.49°)
OKLab	oklab(24.7% -0.0066 -0.0962)
OKLCH	oklch(24.7% 0.096 266)
XYZ	xyz(1.9046, 1.4049, 7.3770)
Luminance	0.0140 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1B4E #4E3E0B

analogous

#0B3C4E #0B1B4E #1D0B4E

triadic

#0B1B4E #4E0B1B #1B4E0B

tetradic

#0B1B4E #4E0B3C #4E3E0B #0B4E1D

square

#0B1B4E #4E0B3C #4E3E0B #0B4E1D

split-complementary

#0B1B4E #4E1D0B #3C4E0B

monochromatic

#04091B #04091B #0B1B4E #132E84 #1A40B9

Accessibility & contrast

On white

16.39

#0B1B4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#0B1B4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1B4E

16.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1B4E	#FFFFFF	#000000	##FFFFFF
##0B1B4E	1.00	16.39	1.28	16.39
#FFFFFF	16.39	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002350

Deuteranopia (green-blind)

#001C4D

Tritanopia (blue-blind)

#002831

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #0b1b4e;
/* rgb */ color: rgb(11, 27, 78);
/* oklch */ color: oklch(24.7% 0.096 266.0);

Tailwind

colors: {
  custom: {
    50: '#575680',
    500: '#0b1b4e',
    950: '#000000',
  },
}

SCSS

$custom: #0b1b4e;
$custom-light: #575680;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1b4e",
  "rgb": {
    "r": 11,
    "g": 27,
    "b": 78
  },
  "hsl": {
    "h": 225.672,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.24697,
    "c": 0.09639,
    "h": 266
  },
  "luminance": 0.01405
}

Semantic roles & 50–950 ramp

primary

#0B1B4E

secondary

#8A732B

accent

#C536F2

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #0B1B4E

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

Preview Lab → · Contrast checker → · Palette generator →