#0A182E#0A182E

#0A182E is a very dark, muted blue. Relative luminance 0.009; OKLCH L 21.0% C 0.048 H 259.1°. Best body text is #FFFFFF at 17.75:1 contrast (WCAG AA passes).

Color values

HEX	#0A182E
RGB	rgb(10, 24, 46)
HSL	hsl(217, 64%, 11%)
HSV	hsv(217, 78%, 18%)
CMYK	cmyk(78.3%, 47.8%, 0%, 82%)
CIE-LAB	lab(8.26, 2.93, -16.57)
CIE-LCH	lch(8.26, 16.83, 280.02°)
OKLab	oklab(21% -0.0091 -0.0471)
OKLCH	oklch(21% 0.048 259.1)
XYZ	xyz(0.9448, 0.9150, 2.7111)
Luminance	0.0092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A182E #2E200A

analogous

#0A2A2E #0A182E #0E0A2E

triadic

#0A182E #2E0A18 #182E0A

tetradic

#0A182E #2E0A2A #2E200A #0A2E0E

square

#0A182E #2E0A2A #2E200A #0A2E0E

split-complementary

#0A182E #2E0E0A #2A2E0A

monochromatic

#050D19 #050D19 #0A182E #153260 #204C93

Accessibility & contrast

On white

17.75

#0A182E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0A182E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A182E

17.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A182E	#FFFFFF	#000000	##FFFFFF
##0A182E	1.00	17.75	1.18	17.75
#FFFFFF	17.75	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E1A2F

Deuteranopia (green-blind)

#09162E

Tritanopia (blue-blind)

#001D20

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #0a182e;
/* rgb */ color: rgb(10, 24, 46);
/* oklch */ color: oklch(21.0% 0.048 259.1);

Tailwind

colors: {
  custom: {
    50: '#4e5467',
    500: '#0a182e',
    950: '#000000',
  },
}

SCSS

$custom: #0a182e;
$custom-light: #4e5467;
$custom-dark: #000000;

JSON

{
  "hex": "#0a182e",
  "rgb": {
    "r": 10,
    "g": 24,
    "b": 46
  },
  "hsl": {
    "h": 216.667,
    "s": 64.286,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20999,
    "c": 0.048,
    "h": 259.1
  },
  "luminance": 0.00915
}

Semantic roles & 50–950 ramp

primary

#0A182E

secondary

#6B5129

accent

#A641E7

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #0A182E

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

Preview Lab → · Contrast checker → · Palette generator →