#0A192F#0A192F

#0A192F is a very dark, muted blue. Relative luminance 0.010; OKLCH L 21.4% C 0.048 H 257.9°. Best body text is #FFFFFF at 17.60:1 contrast (WCAG AA passes).

Color values

HEX	#0A192F
RGB	rgb(10, 25, 47)
HSL	hsl(216, 65%, 11%)
HSV	hsv(216, 79%, 18%)
CMYK	cmyk(78.7%, 46.8%, 0%, 81.6%)
CIE-LAB	lab(8.70, 2.59, -16.62)
CIE-LCH	lch(8.70, 16.82, 278.86°)
OKLab	oklab(21.36% -0.0101 -0.0472)
OKLCH	oklch(21.36% 0.048 257.9)
XYZ	xyz(0.9857, 0.9649, 2.8231)
Luminance	0.0097 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A192F #2F200A

analogous

#0A2B2F #0A192F #0D0A2F

triadic

#0A192F #2F0A19 #192F0A

tetradic

#0A192F #2F0A2B #2F200A #0A2F0D

square

#0A192F #2F0A2B #2F200A #0A2F0D

split-complementary

#0A192F #2F0D0A #2B2F0A

monochromatic

#050D19 #050D19 #0A192F #153461 #1F4F94

Accessibility & contrast

On white

17.60

#0A192F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#0A192F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A192F

17.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A192F	#FFFFFF	#000000	##FFFFFF
##0A192F	1.00	17.60	1.19	17.60
#FFFFFF	17.60	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F1B30

Deuteranopia (green-blind)

#0A172F

Tritanopia (blue-blind)

#001E21

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #0a192f;
/* rgb */ color: rgb(10, 25, 47);
/* oklch */ color: oklch(21.4% 0.048 257.9);

Tailwind

colors: {
  custom: {
    50: '#4e5567',
    500: '#0a192f',
    950: '#000000',
  },
}

SCSS

$custom: #0a192f;
$custom-light: #4e5567;
$custom-dark: #000000;

JSON

{
  "hex": "#0a192f",
  "rgb": {
    "r": 10,
    "g": 25,
    "b": 47
  },
  "hsl": {
    "h": 215.676,
    "s": 64.912,
    "l": 11.176
  },
  "oklch": {
    "l": 0.21359,
    "c": 0.04832,
    "h": 257.9
  },
  "luminance": 0.00965
}

Semantic roles & 50–950 ramp

primary

#0A192F

secondary

#6C5129

accent

#A440E8

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020306

muted

#78787A

Preview Lab

Preview with #0A192F

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

Preview Lab → · Contrast checker → · Palette generator →