#0B0340#0B0340

#0B0340 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.4% C 0.107 H 275.4°. Best body text is #FFFFFF at 19.07:1 contrast (WCAG AA passes).

Color values

HEX	#0B0340
RGB	rgb(11, 3, 64)
HSL	hsl(248, 91%, 13%)
HSV	hsv(248, 95%, 25%)
CMYK	cmyk(82.8%, 95.3%, 0%, 74.9%)
CIE-LAB	lab(4.57, 24.27, -35.62)
CIE-LCH	lch(4.57, 43.10, 304.27°)
OKLab	oklab(18.41% 0.0101 -0.1062)
OKLCH	oklch(18.41% 0.107 275.4)
XYZ	xyz(1.0957, 0.5063, 4.8895)
Luminance	0.0051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 1.96

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0340 #384003

analogous

#031940 #0B0340 #290340

triadic

#0B0340 #400B03 #03400B

tetradic

#0B0340 #400319 #384003 #034029

square

#0B0340 #400319 #384003 #034029

split-complementary

#0B0340 #402903 #194003

monochromatic

#05011D #05011D #0B0340 #15067A #1F08B5

Accessibility & contrast

On white

19.07

#0B0340 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0B0340 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0340

19.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0340	#FFFFFF	#000000	##FFFFFF
##0B0340	1.00	19.07	1.10	19.07
#FFFFFF	19.07	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001242

Deuteranopia (green-blind)

#000D3F

Tritanopia (blue-blind)

#001622

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #0b0340;
/* rgb */ color: rgb(11, 3, 64);
/* oklch */ color: oklch(18.4% 0.107 275.4);

Tailwind

colors: {
  custom: {
    50: '#544676',
    500: '#0b0340',
    950: '#000000',
  },
}

SCSS

$custom: #0b0340;
$custom-light: #544676;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0340",
  "rgb": {
    "r": 11,
    "g": 3,
    "b": 64
  },
  "hsl": {
    "h": 247.869,
    "s": 91.045,
    "l": 13.137
  },
  "oklch": {
    "l": 0.18407,
    "c": 0.10664,
    "h": 275.4
  },
  "luminance": 0.00506
}

Semantic roles & 50–950 ramp

primary

#0B0340

secondary

#75821D

accent

#FF29E3

background

#F5F3F7

surface

#E9E5ED

border

#C5C1C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0B0340

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

Preview Lab → · Contrast checker → · Palette generator →