#0B104E#0B104E

#0B104E is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.5% C 0.111 H 270.1°. Best body text is #FFFFFF at 17.52:1 contrast (WCAG AA passes).

Color values

HEX	#0B104E
RGB	rgb(11, 16, 78)
HSL	hsl(236, 75%, 17%)
HSV	hsv(236, 86%, 31%)
CMYK	cmyk(85.9%, 79.5%, 0%, 69.4%)
CIE-LAB	lab(8.92, 23.29, -38.31)
CIE-LCH	lch(8.92, 44.83, 301.29°)
OKLab	oklab(22.45% 0.0002 -0.111)
OKLCH	oklch(22.45% 0.111 270.1)
XYZ	xyz(1.6980, 0.9916, 7.3082)
Luminance	0.0099 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B104E #4E490B

analogous

#0B324E #0B104E #270B4E

triadic

#0B104E #4E0B10 #104E0B

tetradic

#0B104E #4E0B32 #4E490B #0B4E27

square

#0B104E #4E0B32 #4E490B #0B4E27

split-complementary

#0B104E #4E270B #324E0B

monochromatic

#04061B #04061B #0B104E #131B84 #1A26B9

Accessibility & contrast

On white

17.52

#0B104E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0B104E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B104E

17.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B104E	#FFFFFF	#000000	##FFFFFF
##0B104E	1.00	17.52	1.20	17.52
#FFFFFF	17.52	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D50

Deuteranopia (green-blind)

#00164D

Tritanopia (blue-blind)

#00222D

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #0b104e;
/* rgb */ color: rgb(11, 16, 78);
/* oklch */ color: oklch(22.5% 0.111 270.1);

Tailwind

colors: {
  custom: {
    50: '#584e80',
    500: '#0b104e',
    950: '#000000',
  },
}

SCSS

$custom: #0b104e;
$custom-light: #584e80;
$custom-dark: #000000;

JSON

{
  "hex": "#0b104e",
  "rgb": {
    "r": 11,
    "g": 16,
    "b": 78
  },
  "hsl": {
    "h": 235.522,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.22451,
    "c": 0.11096,
    "h": 270.1
  },
  "luminance": 0.00992
}

Semantic roles & 50–950 ramp

primary

#0B104E

secondary

#8A832B

accent

#E436F2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #0B104E

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

Preview Lab → · Contrast checker → · Palette generator →