#0A172E#0A172E

#0A172E is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.7% C 0.049 H 261.0°. Best body text is #FFFFFF at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#0A172E
RGB	rgb(10, 23, 46)
HSL	hsl(218, 64%, 11%)
HSV	hsv(218, 78%, 18%)
CMYK	cmyk(78.3%, 50%, 0%, 82%)
CIE-LAB	lab(7.90, 3.72, -17.15)
CIE-LCH	lch(7.90, 17.55, 282.23°)
OKLab	oklab(20.72% -0.0078 -0.0488)
OKLCH	oklch(20.72% 0.049 261)
XYZ	xyz(0.9245, 0.8745, 2.7043)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A172E #2E210A

analogous

#0A292E #0A172E #0F0A2E

triadic

#0A172E #2E0A17 #172E0A

tetradic

#0A172E #2E0A29 #2E210A #0A2E0F

square

#0A172E #2E0A29 #2E210A #0A2E0F

split-complementary

#0A172E #2E0F0A #292E0A

monochromatic

#050D19 #050D19 #0A172E #153060 #204993

Accessibility & contrast

On white

17.87

#0A172E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#0A172E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A172E

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A172E	#FFFFFF	#000000	##FFFFFF
##0A172E	1.00	17.87	1.18	17.87
#FFFFFF	17.87	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D192F

Deuteranopia (green-blind)

#07162E

Tritanopia (blue-blind)

#001C20

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #0a172e;
/* rgb */ color: rgb(10, 23, 46);
/* oklch */ color: oklch(20.7% 0.049 261.0);

Tailwind

colors: {
  custom: {
    50: '#4e5367',
    500: '#0a172e',
    950: '#000000',
  },
}

SCSS

$custom: #0a172e;
$custom-light: #4e5367;
$custom-dark: #000000;

JSON

{
  "hex": "#0a172e",
  "rgb": {
    "r": 10,
    "g": 23,
    "b": 46
  },
  "hsl": {
    "h": 218.333,
    "s": 64.286,
    "l": 10.98
  },
  "oklch": {
    "l": 0.20718,
    "c": 0.04946,
    "h": 261
  },
  "luminance": 0.00875
}

Semantic roles & 50–950 ramp

primary

#0A172E

secondary

#6B5329

accent

#AB41E7

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020206

muted

#78787A

Preview Lab

Preview with #0A172E

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

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