#0B0F2F#0B0F2F

#0B0F2F is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.8% C 0.064 H 273.3°. Best body text is #FFFFFF at 18.69:1 contrast (WCAG AA passes).

Color values

HEX	#0B0F2F
RGB	rgb(11, 15, 47)
HSL	hsl(233, 62%, 11%)
HSV	hsv(233, 77%, 18%)
CMYK	cmyk(76.6%, 68.1%, 0%, 81.6%)
CIE-LAB	lab(5.58, 9.60, -21.57)
CIE-LCH	lch(5.58, 23.61, 293.99°)
OKLab	oklab(18.77% 0.0036 -0.0635)
OKLCH	oklch(18.77% 0.064 273.3)
XYZ	xyz(0.8218, 0.6180, 2.7647)
Luminance	0.0062 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.07

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0F2F #2F2B0B

analogous

#0B212F #0B0F2F #190B2F

triadic

#0B0F2F #2F0B0F #0F2F0B

tetradic

#0B0F2F #2F0B21 #2F2B0B #0B2F19

square

#0B0F2F #2F0B21 #2F2B0B #0B2F19

split-complementary

#0B0F2F #2F190B #212F0B

monochromatic

#060819 #060819 #0B0F2F #171F61 #222F92

Accessibility & contrast

On white

18.69

#0B0F2F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#0B0F2F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0F2F

18.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0F2F	#FFFFFF	#000000	##FFFFFF
##0B0F2F	1.00	18.69	1.12	18.69
#FFFFFF	18.69	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001430

Deuteranopia (green-blind)

#00112E

Tritanopia (blue-blind)

#00171D

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #0b0f2f;
/* rgb */ color: rgb(11, 15, 47);
/* oklch */ color: oklch(18.8% 0.064 273.3);

Tailwind

colors: {
  custom: {
    50: '#4e4d68',
    500: '#0b0f2f',
    950: '#000000',
  },
}

SCSS

$custom: #0b0f2f;
$custom-light: #4e4d68;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0f2f",
  "rgb": {
    "r": 11,
    "g": 15,
    "b": 47
  },
  "hsl": {
    "h": 233.333,
    "s": 62.069,
    "l": 11.373
  },
  "oklch": {
    "l": 0.18775,
    "c": 0.06356,
    "h": 273.3
  },
  "luminance": 0.00618
}

Semantic roles & 50–950 ramp

primary

#0B0F2F

secondary

#6B642A

accent

#D343E5

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020106

muted

#78777A

Preview Lab

Preview with #0B0F2F

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

Preview Lab → · Contrast checker → · Palette generator →