#0B0540#0B0540

#0B0540 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.8% C 0.104 H 274.9°. Best body text is #FFFFFF at 18.92:1 contrast (WCAG AA passes).

Color values

HEX	#0B0540
RGB	rgb(11, 5, 64)
HSL	hsl(246, 86%, 14%)
HSV	hsv(246, 92%, 25%)
CMYK	cmyk(82.8%, 92.2%, 0%, 74.9%)
CIE-LAB	lab(4.97, 23.32, -34.98)
CIE-LCH	lch(4.97, 42.04, 303.70°)
OKLab	oklab(18.79% 0.0089 -0.1036)
OKLCH	oklch(18.79% 0.104 274.9)
XYZ	xyz(1.1174, 0.5497, 4.8967)
Luminance	0.0055 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.21

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0540 #3A4005

analogous

#051C40 #0B0540 #280540

triadic

#0B0540 #400B05 #05400B

tetradic

#0B0540 #40051C #3A4005 #054028

square

#0B0540 #40051C #3A4005 #054028

split-complementary

#0B0540 #402805 #1C4005

monochromatic

#05021C #05021C #0B0540 #150979 #1F0EB2

Accessibility & contrast

On white

18.92

#0B0540 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0B0540 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0540

18.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0540	#FFFFFF	#000000	##FFFFFF
##0B0540	1.00	18.92	1.11	18.92
#FFFFFF	18.92	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001342

Deuteranopia (green-blind)

#000E3F

Tritanopia (blue-blind)

#001723

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #0b0540;
/* rgb */ color: rgb(11, 5, 64);
/* oklch */ color: oklch(18.8% 0.104 274.9);

Tailwind

colors: {
  custom: {
    50: '#544776',
    500: '#0b0540',
    950: '#000000',
  },
}

SCSS

$custom: #0b0540;
$custom-light: #544776;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0540",
  "rgb": {
    "r": 11,
    "g": 5,
    "b": 64
  },
  "hsl": {
    "h": 246.102,
    "s": 85.507,
    "l": 13.529
  },
  "oklch": {
    "l": 0.18786,
    "c": 0.10396,
    "h": 274.9
  },
  "luminance": 0.0055
}

Semantic roles & 50–950 ramp

primary

#0B0540

secondary

#778120

accent

#FC2CE7

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0B0540

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

Preview Lab → · Contrast checker → · Palette generator →