#0B0440#0B0440

#0B0440 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.6% C 0.105 H 275.2°. Best body text is #FFFFFF at 18.99:1 contrast (WCAG AA passes).

Color values

HEX	#0B0440
RGB	rgb(11, 4, 64)
HSL	hsl(247, 88%, 13%)
HSV	hsv(247, 94%, 25%)
CMYK	cmyk(82.8%, 93.8%, 0%, 74.9%)
CIE-LAB	lab(4.77, 23.80, -35.30)
CIE-LCH	lch(4.77, 42.57, 303.99°)
OKLab	oklab(18.6% 0.0095 -0.1048)
OKLCH	oklch(18.6% 0.105 275.2)
XYZ	xyz(1.1065, 0.5280, 4.8931)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.08

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0440 #394004

analogous

#041B40 #0B0440 #290440

triadic

#0B0440 #400B04 #04400B

tetradic

#0B0440 #40041B #394004 #044029

square

#0B0440 #40041B #394004 #044029

split-complementary

#0B0440 #402904 #1B4004

monochromatic

#05021D #05021D #0B0440 #15087A #1F0BB3

Accessibility & contrast

On white

18.99

#0B0440 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#0B0440 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0440

18.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0440	#FFFFFF	#000000	##FFFFFF
##0B0440	1.00	18.99	1.11	18.99
#FFFFFF	18.99	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001342

Deuteranopia (green-blind)

#000D3F

Tritanopia (blue-blind)

#001723

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #0b0440;
/* rgb */ color: rgb(11, 4, 64);
/* oklch */ color: oklch(18.6% 0.105 275.2);

Tailwind

colors: {
  custom: {
    50: '#544776',
    500: '#0b0440',
    950: '#000000',
  },
}

SCSS

$custom: #0b0440;
$custom-light: #544776;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0440",
  "rgb": {
    "r": 11,
    "g": 4,
    "b": 64
  },
  "hsl": {
    "h": 247,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.18598,
    "c": 0.10528,
    "h": 275.2
  },
  "luminance": 0.00528
}

Semantic roles & 50–950 ramp

primary

#0B0440

secondary

#76811F

accent

#FE29E6

background

#F5F4F7

surface

#E9E6ED

border

#C5C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0B0440

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

Preview Lab → · Contrast checker → · Palette generator →