#0A182F#0A182F

#0A182F is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.1% C 0.050 H 259.8°. Best body text is #FFFFFF at 17.73:1 contrast (WCAG AA passes).

Color values

HEX	#0A182F
RGB	rgb(10, 24, 47)
HSL	hsl(217, 65%, 11%)
HSV	hsv(217, 79%, 18%)
CMYK	cmyk(78.7%, 48.9%, 0%, 81.6%)
CIE-LAB	lab(8.33, 3.38, -17.19)
CIE-LCH	lch(8.33, 17.52, 281.11°)
OKLab	oklab(21.08% -0.0088 -0.049)
OKLCH	oklch(21.08% 0.05 259.8)
XYZ	xyz(0.9647, 0.9229, 2.8161)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A182F #2F210A

analogous

#0A2A2F #0A182F #0E0A2F

triadic

#0A182F #2F0A18 #182F0A

tetradic

#0A182F #2F0A2A #2F210A #0A2F0E

square

#0A182F #2F0A2A #2F210A #0A2F0E

split-complementary

#0A182F #2F0E0A #2A2F0A

monochromatic

#050D19 #050D19 #0A182F #153261 #1F4C94

Accessibility & contrast

On white

17.73

#0A182F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0A182F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A182F

17.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A182F	#FFFFFF	#000000	##FFFFFF
##0A182F	1.00	17.73	1.18	17.73
#FFFFFF	17.73	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E1A30

Deuteranopia (green-blind)

#08172F

Tritanopia (blue-blind)

#001D21

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a182f;
/* rgb */ color: rgb(10, 24, 47);
/* oklch */ color: oklch(21.1% 0.050 259.8);

Tailwind

colors: {
  custom: {
    50: '#4e5467',
    500: '#0a182f',
    950: '#000000',
  },
}

SCSS

$custom: #0a182f;
$custom-light: #4e5467;
$custom-dark: #000000;

JSON

{
  "hex": "#0a182f",
  "rgb": {
    "r": 10,
    "g": 24,
    "b": 47
  },
  "hsl": {
    "h": 217.297,
    "s": 64.912,
    "l": 11.176
  },
  "oklch": {
    "l": 0.21077,
    "c": 0.04974,
    "h": 259.8
  },
  "luminance": 0.00923
}

Semantic roles & 50–950 ramp

primary

#0A182F

secondary

#6C5329

accent

#A840E8

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #0A182F

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

Preview Lab → · Contrast checker → · Palette generator →