#0A173D#0A173D

#0A173D is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.0% C 0.075 H 266.1°. Best body text is #FFFFFF at 17.46:1 contrast (WCAG AA passes).

Color values

HEX	#0A173D
RGB	rgb(10, 23, 61)
HSL	hsl(225, 72%, 14%)
HSV	hsv(225, 84%, 24%)
CMYK	cmyk(83.6%, 62.3%, 0%, 76.1%)
CIE-LAB	lab(9.11, 10.53, -26.08)
CIE-LCH	lch(9.11, 28.12, 292.00°)
OKLab	oklab(22.03% -0.0052 -0.0751)
OKLCH	oklch(22.03% 0.075 266.1)
XYZ	xyz(1.2736, 1.0141, 4.5426)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A173D #3D300A

analogous

#0A313D #0A173D #170A3D

triadic

#0A173D #3D0A17 #173D0A

tetradic

#0A173D #3D0A31 #3D300A #0A3D17

square

#0A173D #3D0A31 #3D300A #0A3D17

split-complementary

#0A173D #3D170A #313D0A

monochromatic

#040A1A #040A1A #0A173D #132B72 #1B3FA6

Accessibility & contrast

On white

17.46

#0A173D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0A173D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A173D

17.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A173D	#FFFFFF	#000000	##FFFFFF
##0A173D	1.00	17.46	1.20	17.46
#FFFFFF	17.46	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C3E

Deuteranopia (green-blind)

#00173C

Tritanopia (blue-blind)

#002027

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0a173d;
/* rgb */ color: rgb(10, 23, 61);
/* oklch */ color: oklch(22.0% 0.075 266.1);

Tailwind

colors: {
  custom: {
    50: '#525373',
    500: '#0a173d',
    950: '#000000',
  },
}

SCSS

$custom: #0a173d;
$custom-light: #525373;
$custom-dark: #000000;

JSON

{
  "hex": "#0a173d",
  "rgb": {
    "r": 10,
    "g": 23,
    "b": 61
  },
  "hsl": {
    "h": 224.706,
    "s": 71.831,
    "l": 13.922
  },
  "oklch": {
    "l": 0.22029,
    "c": 0.07528,
    "h": 266.1
  },
  "luminance": 0.01014
}

Semantic roles & 50–950 ramp

primary

#0A173D

secondary

#7A6528

accent

#C039EF

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#020208

muted

#78787B

Preview Lab

Preview with #0A173D

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

Preview Lab → · Contrast checker → · Palette generator →