#0A0A42#0A0A42

#0A0A42 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.9% C 0.101 H 272.4°. Best body text is #FFFFFF at 18.50:1 contrast (WCAG AA passes).

Color values

HEX	#0A0A42
RGB	rgb(10, 10, 66)
HSL	hsl(240, 74%, 15%)
HSV	hsv(240, 85%, 26%)
CMYK	cmyk(84.8%, 84.8%, 0%, 74.1%)
CIE-LAB	lab(6.10, 21.73, -34.56)
CIE-LCH	lch(6.10, 40.82, 302.16°)
OKLab	oklab(19.86% 0.0042 -0.1009)
OKLCH	oklch(19.86% 0.101 272.4)
XYZ	xyz(1.2168, 0.6748, 5.2193)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A0A42 #42420A

analogous

#0A2642 #0A0A42 #260A42

triadic

#0A0A42 #420A0A #0A420A

tetradic

#0A0A42 #420A26 #42420A #0A4226

square

#0A0A42 #420A26 #42420A #0A4226

split-complementary

#0A0A42 #42260A #26420A

monochromatic

#04041B #04041B #0A0A42 #121277 #1A1AAC

Accessibility & contrast

On white

18.50

#0A0A42 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#0A0A42 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A0A42

18.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A0A42	#FFFFFF	#000000	##FFFFFF
##0A0A42	1.00	18.50	1.14	18.50
#FFFFFF	18.50	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001644

Deuteranopia (green-blind)

#001141

Tritanopia (blue-blind)

#001A25

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #0a0a42;
/* rgb */ color: rgb(10, 10, 66);
/* oklch */ color: oklch(19.9% 0.101 272.4);

Tailwind

colors: {
  custom: {
    50: '#544a77',
    500: '#0a0a42',
    950: '#000000',
  },
}

SCSS

$custom: #0a0a42;
$custom-light: #544a77;
$custom-dark: #000000;

JSON

{
  "hex": "#0a0a42",
  "rgb": {
    "r": 10,
    "g": 10,
    "b": 66
  },
  "hsl": {
    "h": 240,
    "s": 73.684,
    "l": 14.902
  },
  "oklch": {
    "l": 0.19856,
    "c": 0.10098,
    "h": 272.4
  },
  "luminance": 0.00675
}

Semantic roles & 50–950 ramp

primary

#0A0A42

secondary

#7F7F29

accent

#F037F0

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030109

muted

#78777B

Preview Lab

Preview with #0A0A42

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

Preview Lab → · Contrast checker → · Palette generator →