#0B123F#0B123F

#0B123F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.1% C 0.086 H 270.3°. Best body text is #FFFFFF at 17.91:1 contrast (WCAG AA passes).

Color values

HEX	#0B123F
RGB	rgb(11, 18, 63)
HSL	hsl(232, 70%, 15%)
HSV	hsv(232, 83%, 25%)
CMYK	cmyk(82.5%, 71.4%, 0%, 75.3%)
CIE-LAB	lab(7.79, 15.51, -29.64)
CIE-LCH	lch(7.79, 33.46, 297.62°)
OKLab	oklab(21.12% 0.0005 -0.0856)
OKLCH	oklch(21.12% 0.086 270.3)
XYZ	xyz(1.2512, 0.8625, 4.8022)
Luminance	0.0086 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B123F #3F380B

analogous

#0B2C3F #0B123F #1E0B3F

triadic

#0B123F #3F0B12 #123F0B

tetradic

#0B123F #3F0B2C #3F380B #0B3F1E

square

#0B123F #3F0B2C #3F380B #0B3F1E

split-complementary

#0B123F #3F1E0B #2C3F0B

monochromatic

#05071A #05071A #0B123F #142173 #1D30A7

Accessibility & contrast

On white

17.91

#0B123F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#0B123F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B123F

17.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B123F	#FFFFFF	#000000	##FFFFFF
##0B123F	1.00	17.91	1.17	17.91
#FFFFFF	17.91	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A40

Deuteranopia (green-blind)

#00153E

Tritanopia (blue-blind)

#001E26

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #0b123f;
/* rgb */ color: rgb(11, 18, 63);
/* oklch */ color: oklch(21.1% 0.086 270.3);

Tailwind

colors: {
  custom: {
    50: '#534f74',
    500: '#0b123f',
    950: '#000000',
  },
}

SCSS

$custom: #0b123f;
$custom-light: #534f74;
$custom-dark: #000000;

JSON

{
  "hex": "#0b123f",
  "rgb": {
    "r": 11,
    "g": 18,
    "b": 63
  },
  "hsl": {
    "h": 231.923,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.21121,
    "c": 0.08564,
    "h": 270.3
  },
  "luminance": 0.00863
}

Semantic roles & 50–950 ramp

primary

#0B123F

secondary

#7C712A

accent

#D53BED

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B123F

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

Preview Lab → · Contrast checker → · Palette generator →