#0A042D#0A042D

#0A042D is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.9% C 0.079 H 280.7°. Best body text is #FFFFFF at 19.66:1 contrast (WCAG AA passes).

Color values

HEX	#0A042D
RGB	rgb(10, 4, 45)
HSL	hsl(249, 84%, 10%)
HSV	hsv(249, 91%, 18%)
CMYK	cmyk(77.8%, 91.1%, 0%, 82.4%)
CIE-LAB	lab(3.08, 13.03, -24.06)
CIE-LCH	lch(3.08, 27.36, 298.45°)
OKLab	oklab(15.91% 0.0147 -0.0775)
OKLCH	oklch(15.91% 0.079 280.7)
XYZ	xyz(0.6421, 0.3408, 2.5141)
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

#0A042D #272D04

analogous

#04132D #0A042D #1F042D

triadic

#0A042D #2D0A04 #042D0A

tetradic

#0A042D #2D0413 #272D04 #042D1F

square

#0A042D #2D0413 #272D04 #042D1F

split-complementary

#0A042D #2D1F04 #132D04

monochromatic

#06021C #06021C #0A042D #160965 #230E9D

Accessibility & contrast

On white

19.66

#0A042D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#0A042D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A042D

19.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A042D	#FFFFFF	#000000	##FFFFFF
##0A042D	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)

#000D2E

Deuteranopia (green-blind)

#000A2C

Tritanopia (blue-blind)

#000F17

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #0a042d;
/* rgb */ color: rgb(10, 4, 45);
/* oklch */ color: oklch(15.9% 0.079 280.7);

Tailwind

colors: {
  custom: {
    50: '#4c4866',
    500: '#0a042d',
    950: '#000000',
  },
}

SCSS

$custom: #0a042d;
$custom-light: #4c4866;
$custom-dark: #000000;

JSON

{
  "hex": "#0a042d",
  "rgb": {
    "r": 10,
    "g": 4,
    "b": 45
  },
  "hsl": {
    "h": 248.78,
    "s": 83.673,
    "l": 9.608
  },
  "oklch": {
    "l": 0.15906,
    "c": 0.07888,
    "h": 280.7
  },
  "luminance": 0.00341
}

Semantic roles & 50–950 ramp

primary

#0A042D

secondary

#64701D

accent

#FA2EDC

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #0A042D

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

Preview Lab → · Contrast checker → · Palette generator →