#0B0B38#0B0B38

#0B0B38 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.9% C 0.084 H 274.7°. Best body text is #FFFFFF at 18.76:1 contrast (WCAG AA passes).

Color values

HEX	#0B0B38
RGB	rgb(11, 11, 56)
HSL	hsl(240, 67%, 13%)
HSV	hsv(240, 80%, 22%)
CMYK	cmyk(80.4%, 80.4%, 0%, 78%)
CIE-LAB	lab(5.38, 16.34, -28.52)
CIE-LCH	lch(5.38, 32.87, 299.81°)
OKLab	oklab(18.88% 0.0069 -0.0841)
OKLCH	oklch(18.88% 0.084 274.7)
XYZ	xyz(0.9713, 0.5959, 3.8045)
Luminance	0.0060 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0B38 #38380B

analogous

#0B2138 #0B0B38 #210B38

triadic

#0B0B38 #380B0B #0B380B

tetradic

#0B0B38 #380B21 #38380B #0B3821

square

#0B0B38 #380B21 #38380B #0B3821

split-complementary

#0B0B38 #38210B #21380B

monochromatic

#05051A #05051A #0B0B38 #15156B #1F1F9E

Accessibility & contrast

On white

18.76

#0B0B38 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#0B0B38 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0B38

18.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0B38	#FFFFFF	#000000	##FFFFFF
##0B0B38	1.00	18.76	1.12	18.76
#FFFFFF	18.76	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001439

Deuteranopia (green-blind)

#001037

Tritanopia (blue-blind)

#001720

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #0b0b38;
/* rgb */ color: rgb(11, 11, 56);
/* oklch */ color: oklch(18.9% 0.084 274.7);

Tailwind

colors: {
  custom: {
    50: '#514b6f',
    500: '#0b0b38',
    950: '#000000',
  },
}

SCSS

$custom: #0b0b38;
$custom-light: #514b6f;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0b38",
  "rgb": {
    "r": 11,
    "g": 11,
    "b": 56
  },
  "hsl": {
    "h": 240,
    "s": 67.164,
    "l": 13.137
  },
  "oklch": {
    "l": 0.18876,
    "c": 0.08443,
    "h": 274.7
  },
  "luminance": 0.00596
}

Semantic roles & 50–950 ramp

primary

#0B0B38

secondary

#75752A

accent

#EA3EEA

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #0B0B38

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

Preview Lab → · Contrast checker → · Palette generator →