#0A0A43#0A0A43

#0A0A43 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.0% C 0.102 H 272.2°. Best body text is #FFFFFF at 18.46:1 contrast (WCAG AA passes).

Color values

HEX	#0A0A43
RGB	rgb(10, 10, 67)
HSL	hsl(240, 74%, 15%)
HSV	hsv(240, 85%, 26%)
CMYK	cmyk(85.1%, 85.1%, 0%, 73.7%)
CIE-LAB	lab(6.20, 22.21, -35.09)
CIE-LCH	lch(6.20, 41.53, 302.33°)
OKLab	oklab(19.99% 0.004 -0.1023)
OKLCH	oklch(19.99% 0.102 272.2)
XYZ	xyz(1.2465, 0.6867, 5.3760)
Luminance	0.0069 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0A43 #43430A

analogous

#0A2643 #0A0A43 #260A43

triadic

#0A0A43 #430A0A #0A430A

tetradic

#0A0A43 #430A26 #43430A #0A4326

square

#0A0A43 #430A26 #43430A #0A4326

split-complementary

#0A0A43 #43260A #26430A

monochromatic

#04041B #04041B #0A0A43 #121278 #1A1AAE

Accessibility & contrast

On white

18.46

#0A0A43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#0A0A43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0A43

18.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0A43	#FFFFFF	#000000	##FFFFFF
##0A0A43	1.00	18.46	1.14	18.46
#FFFFFF	18.46	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001745

Deuteranopia (green-blind)

#001142

Tritanopia (blue-blind)

#001B26

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #0a0a43;
/* rgb */ color: rgb(10, 10, 67);
/* oklch */ color: oklch(20.0% 0.102 272.2);

Tailwind

colors: {
  custom: {
    50: '#554a78',
    500: '#0a0a43',
    950: '#000000',
  },
}

SCSS

$custom: #0a0a43;
$custom-light: #554a78;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0a43",
  "rgb": {
    "r": 10,
    "g": 10,
    "b": 67
  },
  "hsl": {
    "h": 240,
    "s": 74.026,
    "l": 15.098
  },
  "oklch": {
    "l": 0.19985,
    "c": 0.10242,
    "h": 272.2
  },
  "luminance": 0.00687
}

Semantic roles & 50–950 ramp

primary

#0A0A43

secondary

#808029

accent

#F137F1

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #0A0A43

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

Preview Lab → · Contrast checker → · Palette generator →