#0A052F#0A052F

#0A052F is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.4% C 0.080 H 279.2°. Best body text is #FFFFFF at 19.52:1 contrast (WCAG AA passes).

Color values

HEX	#0A052F
RGB	rgb(10, 5, 47)
HSL	hsl(247, 81%, 10%)
HSV	hsv(247, 89%, 18%)
CMYK	cmyk(78.7%, 89.4%, 0%, 81.6%)
CIE-LAB	lab(3.42, 13.63, -25.03)
CIE-LCH	lch(3.42, 28.50, 298.58°)
OKLab	oklab(16.42% 0.0129 -0.0789)
OKLCH	oklch(16.42% 0.08 279.2)
XYZ	xyz(0.6924, 0.3783, 2.7253)
Luminance	0.0038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A052F #2A2F05

analogous

#05152F #0A052F #1F052F

triadic

#0A052F #2F0A05 #052F0A

tetradic

#0A052F #2F0515 #2A2F05 #052F1F

square

#0A052F #2F0515 #2A2F05 #052F1F

split-complementary

#0A052F #2F1F05 #152F05

monochromatic

#06031C #06031C #0A052F #160B66 #22119E

Accessibility & contrast

On white

19.52

#0A052F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#0A052F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A052F

19.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A052F	#FFFFFF	#000000	##FFFFFF
##0A052F	1.00	19.52	1.08	19.52
#FFFFFF	19.52	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E30

Deuteranopia (green-blind)

#000B2E

Tritanopia (blue-blind)

#001019

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #0a052f;
/* rgb */ color: rgb(10, 5, 47);
/* oklch */ color: oklch(16.4% 0.080 279.2);

Tailwind

colors: {
  custom: {
    50: '#4d4868',
    500: '#0a052f',
    950: '#000000',
  },
}

SCSS

$custom: #0a052f;
$custom-light: #4d4868;
$custom-dark: #000000;

JSON

{
  "hex": "#0a052f",
  "rgb": {
    "r": 10,
    "g": 5,
    "b": 47
  },
  "hsl": {
    "h": 247.143,
    "s": 80.769,
    "l": 10.196
  },
  "oklch": {
    "l": 0.16417,
    "c": 0.07998,
    "h": 279.2
  },
  "luminance": 0.00378
}

Semantic roles & 50–950 ramp

primary

#0A052F

secondary

#67711F

accent

#F731E0

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#020006

muted

#78777A

Preview Lab

Preview with #0A052F

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

Preview Lab → · Contrast checker → · Palette generator →