#0A172D#0A172D

#0A172D is a very dark, muted blue. Relative luminance 0.009; OKLCH L 20.6% C 0.048 H 260.3°. Best body text is #FFFFFF at 17.90:1 contrast (WCAG AA passes).

Color values

HEX	#0A172D
RGB	rgb(10, 23, 45)
HSL	hsl(218, 64%, 11%)
HSV	hsv(218, 78%, 18%)
CMYK	cmyk(77.8%, 48.9%, 0%, 82.4%)
CIE-LAB	lab(7.83, 3.27, -16.52)
CIE-LCH	lch(7.83, 16.84, 281.19°)
OKLab	oklab(20.64% -0.008 -0.047)
OKLCH	oklch(20.64% 0.048 260.3)
XYZ	xyz(0.9051, 0.8667, 2.6017)
Luminance	0.0087 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A172D #2D200A

analogous

#0A282D #0A172D #0E0A2D

triadic

#0A172D #2D0A17 #172D0A

tetradic

#0A172D #2D0A28 #2D200A #0A2D0E

square

#0A172D #2D0A28 #2D200A #0A2D0E

split-complementary

#0A172D #2D0E0A #282D0A

monochromatic

#060D19 #060D19 #0A172D #15315F #204A91

Accessibility & contrast

On white

17.90

#0A172D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#0A172D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A172D

17.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A172D	#FFFFFF	#000000	##FFFFFF
##0A172D	1.00	17.90	1.17	17.90
#FFFFFF	17.90	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D192E

Deuteranopia (green-blind)

#08162D

Tritanopia (blue-blind)

#001C1F

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #0a172d;
/* rgb */ color: rgb(10, 23, 45);
/* oklch */ color: oklch(20.6% 0.048 260.3);

Tailwind

colors: {
  custom: {
    50: '#4d5366',
    500: '#0a172d',
    950: '#000000',
  },
}

SCSS

$custom: #0a172d;
$custom-light: #4d5366;
$custom-dark: #000000;

JSON

{
  "hex": "#0a172d",
  "rgb": {
    "r": 10,
    "g": 23,
    "b": 45
  },
  "hsl": {
    "h": 217.714,
    "s": 63.636,
    "l": 10.784
  },
  "oklch": {
    "l": 0.2064,
    "c": 0.04769,
    "h": 260.3
  },
  "luminance": 0.00867
}

Semantic roles & 50–950 ramp

primary

#0A172D

secondary

#6A5229

accent

#A941E7

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010206

muted

#77787A

Preview Lab

Preview with #0A172D

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

Preview Lab → · Contrast checker → · Palette generator →