#0A112B#0A112B

#0A112B is a very dark, muted blue. Relative luminance 0.006; OKLCH L 18.8% C 0.054 H 269.4°. Best body text is #FFFFFF at 18.62:1 contrast (WCAG AA passes).

Color values

HEX	#0A112B
RGB	rgb(10, 17, 43)
HSL	hsl(227, 62%, 10%)
HSV	hsv(227, 77%, 17%)
CMYK	cmyk(76.7%, 60.5%, 0%, 83.1%)
CIE-LAB	lab(5.78, 6.28, -18.28)
CIE-LCH	lch(5.78, 19.33, 288.97°)
OKLab	oklab(18.83% -0.0006 -0.0535)
OKLCH	oklch(18.83% 0.054 269.4)
XYZ	xyz(0.7615, 0.6398, 2.3684)
Luminance	0.0064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.06

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A112B #2B240A

analogous

#0A212B #0A112B #130A2B

triadic

#0A112B #2B0A11 #112B0A

tetradic

#0A112B #2B0A21 #2B240A #0A2B13

square

#0A112B #2B0A21 #2B240A #0A2B13

split-complementary

#0A112B #2B130A #212B0A

monochromatic

#060A19 #060A19 #0A112B #16255D #21388E

Accessibility & contrast

On white

18.62

#0A112B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#0A112B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A112B

18.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A112B	#FFFFFF	#000000	##FFFFFF
##0A112B	1.00	18.62	1.13	18.62
#FFFFFF	18.62	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#05142C

Deuteranopia (green-blind)

#01112A

Tritanopia (blue-blind)

#00171B

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #0a112b;
/* rgb */ color: rgb(10, 17, 43);
/* oklch */ color: oklch(18.8% 0.054 269.4);

Tailwind

colors: {
  custom: {
    50: '#4d4f64',
    500: '#0a112b',
    950: '#000000',
  },
}

SCSS

$custom: #0a112b;
$custom-light: #4d4f64;
$custom-dark: #000000;

JSON

{
  "hex": "#0a112b",
  "rgb": {
    "r": 10,
    "g": 17,
    "b": 43
  },
  "hsl": {
    "h": 227.273,
    "s": 62.264,
    "l": 10.392
  },
  "oklch": {
    "l": 0.1883,
    "c": 0.05351,
    "h": 269.4
  },
  "luminance": 0.0064
}

Semantic roles & 50–950 ramp

primary

#0A112B

secondary

#685B29

accent

#C342E5

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #0A112B

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

Preview Lab → · Contrast checker → · Palette generator →