#0A0A3F#0A0A3F

#0A0A3F is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.5% C 0.097 H 272.9°. Best body text is #FFFFFF at 18.62:1 contrast (WCAG AA passes).

Color values

HEX	#0A0A3F
RGB	rgb(10, 10, 63)
HSL	hsl(240, 73%, 14%)
HSV	hsv(240, 84%, 25%)
CMYK	cmyk(84.1%, 84.1%, 0%, 75.3%)
CIE-LAB	lab(5.78, 20.24, -32.92)
CIE-LCH	lch(5.78, 38.65, 301.58°)
OKLab	oklab(19.47% 0.0048 -0.0965)
OKLCH	oklch(19.47% 0.097 272.9)
XYZ	xyz(1.1306, 0.6404, 4.7657)
Luminance	0.0064 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0A3F #3F3F0A

analogous

#0A253F #0A0A3F #250A3F

triadic

#0A0A3F #3F0A0A #0A3F0A

tetradic

#0A0A3F #3F0A25 #3F3F0A #0A3F25

square

#0A0A3F #3F0A25 #3F3F0A #0A3F25

split-complementary

#0A0A3F #3F250A #253F0A

monochromatic

#04041A #04041A #0A0A3F #121274 #1B1BA9

Accessibility & contrast

On white

18.62

#0A0A3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#0A0A3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0A3F

18.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0A3F	#FFFFFF	#000000	##FFFFFF
##0A0A3F	1.00	18.62	1.13	18.62
#FFFFFF	18.62	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001541

Deuteranopia (green-blind)

#00103E

Tritanopia (blue-blind)

#001923

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #0a0a3f;
/* rgb */ color: rgb(10, 10, 63);
/* oklch */ color: oklch(19.5% 0.097 272.9);

Tailwind

colors: {
  custom: {
    50: '#534a75',
    500: '#0a0a3f',
    950: '#000000',
  },
}

SCSS

$custom: #0a0a3f;
$custom-light: #534a75;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0a3f",
  "rgb": {
    "r": 10,
    "g": 10,
    "b": 63
  },
  "hsl": {
    "h": 240,
    "s": 72.603,
    "l": 14.314
  },
  "oklch": {
    "l": 0.19474,
    "c": 0.0966,
    "h": 272.9
  },
  "luminance": 0.0064
}

Semantic roles & 50–950 ramp

primary

#0A0A3F

secondary

#7C7C29

accent

#EF38EF

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #0A0A3F

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

Preview Lab → · Contrast checker → · Palette generator →