#0A052A#0A052A

#0A052A is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.8% C 0.072 H 281.4°. Best body text is #FFFFFF at 19.66:1 contrast (WCAG AA passes).

Color values

HEX	#0A052A
RGB	rgb(10, 5, 42)
HSL	hsl(248, 79%, 9%)
HSV	hsv(248, 88%, 16%)
CMYK	cmyk(76.2%, 88.1%, 0%, 83.5%)
CIE-LAB	lab(3.07, 11.22, -21.79)
CIE-LCH	lch(3.07, 24.51, 297.24°)
OKLab	oklab(15.78% 0.0143 -0.0709)
OKLCH	oklch(15.78% 0.072 281.4)
XYZ	xyz(0.5972, 0.3402, 2.2242)
Luminance	0.0034 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A052A #252A05

analogous

#05132A #0A052A #1D052A

triadic

#0A052A #2A0A05 #052A0A

tetradic

#0A052A #2A0513 #252A05 #052A1D

square

#0A052A #2A0513 #252A05 #052A1D

split-complementary

#0A052A #2A1D05 #132A05

monochromatic

#07031B #07031B #0A052A #170C61 #241297

Accessibility & contrast

On white

19.66

#0A052A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#0A052A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A052A

19.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A052A	#FFFFFF	#000000	##FFFFFF
##0A052A	1.00	19.66	1.07	19.66
#FFFFFF	19.66	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000C2B

Deuteranopia (green-blind)

#000A29

Tritanopia (blue-blind)

#000F16

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #0a052a;
/* rgb */ color: rgb(10, 5, 42);
/* oklch */ color: oklch(15.8% 0.072 281.4);

Tailwind

colors: {
  custom: {
    50: '#4c4964',
    500: '#0a052a',
    950: '#000000',
  },
}

SCSS

$custom: #0a052a;
$custom-light: #4c4964;
$custom-dark: #000000;

JSON

{
  "hex": "#0a052a",
  "rgb": {
    "r": 10,
    "g": 5,
    "b": 42
  },
  "hsl": {
    "h": 248.108,
    "s": 78.723,
    "l": 9.216
  },
  "oklch": {
    "l": 0.15785,
    "c": 0.07235,
    "h": 281.4
  },
  "luminance": 0.0034
}

Semantic roles & 50–950 ramp

primary

#0A052A

secondary

#616C1F

accent

#F533DB

background

#F4F4F5

surface

#E7E6EA

border

#C3C2C6

text

#010005

muted

#777779

Preview Lab

Preview with #0A052A

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

Preview Lab → · Contrast checker → · Palette generator →