#0B0B40#0B0B40

#0B0B40 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.8% C 0.097 H 273.2°. Best body text is #FFFFFF at 18.48:1 contrast (WCAG AA passes).

Color values

HEX	#0B0B40
RGB	rgb(11, 11, 64)
HSL	hsl(240, 71%, 15%)
HSV	hsv(240, 83%, 25%)
CMYK	cmyk(82.8%, 82.8%, 0%, 74.9%)
CIE-LAB	lab(6.15, 20.41, -33.04)
CIE-LCH	lch(6.15, 38.84, 301.70°)
OKLab	oklab(19.85% 0.0054 -0.0964)
OKLCH	oklch(19.85% 0.097 273.2)
XYZ	xyz(1.1828, 0.6805, 4.9185)
Luminance	0.0068 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 2.65

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0B40 #40400B

analogous

#0B2640 #0B0B40 #260B40

triadic

#0B0B40 #400B0B #0B400B

tetradic

#0B0B40 #400B26 #40400B #0B4026

square

#0B0B40 #400B26 #40400B #0B4026

split-complementary

#0B0B40 #40260B #26400B

monochromatic

#04041A #04041A #0B0B40 #141474 #1D1DA8

Accessibility & contrast

On white

18.48

#0B0B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#0B0B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0B40

18.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0B40	#FFFFFF	#000000	##FFFFFF
##0B0B40	1.00	18.48	1.14	18.48
#FFFFFF	18.48	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001642

Deuteranopia (green-blind)

#00113F

Tritanopia (blue-blind)

#001A24

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #0b0b40;
/* rgb */ color: rgb(11, 11, 64);
/* oklch */ color: oklch(19.8% 0.097 273.2);

Tailwind

colors: {
  custom: {
    50: '#544b75',
    500: '#0b0b40',
    950: '#000000',
  },
}

SCSS

$custom: #0b0b40;
$custom-light: #544b75;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0b40",
  "rgb": {
    "r": 11,
    "g": 11,
    "b": 64
  },
  "hsl": {
    "h": 240,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.19845,
    "c": 0.09657,
    "h": 273.2
  },
  "luminance": 0.00681
}

Semantic roles & 50–950 ramp

primary

#0B0B40

secondary

#7D7D2A

accent

#ED3AED

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0B0B40

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

Preview Lab → · Contrast checker → · Palette generator →