#0A033F#0A033F

#0A033F is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.2% C 0.106 H 274.8°. Best body text is #FFFFFF at 19.13:1 contrast (WCAG AA passes).

Color values

HEX	#0A033F
RGB	rgb(10, 3, 63)
HSL	hsl(247, 91%, 13%)
HSV	hsv(247, 95%, 25%)
CMYK	cmyk(84.1%, 95.2%, 0%, 75.3%)
CIE-LAB	lab(4.41, 23.54, -35.17)
CIE-LCH	lch(4.41, 42.32, 303.80°)
OKLab	oklab(18.18% 0.0088 -0.1052)
OKLCH	oklch(18.18% 0.106 274.8)
XYZ	xyz(1.0546, 0.4884, 4.7404)
Luminance	0.0049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.16

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0A033F #383F03

analogous

#031A3F #0A033F #28033F

triadic

#0A033F #3F0A03 #033F0A

tetradic

#0A033F #3F031A #383F03 #033F28

square

#0A033F #3F031A #383F03 #033F28

split-complementary

#0A033F #3F2803 #1A3F03

monochromatic

#05011D #05011D #0A033F #130679 #1D09B4

Accessibility & contrast

On white

19.13

#0A033F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0A033F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0A033F

19.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0A033F	#FFFFFF	#000000	##FFFFFF
##0A033F	1.00	19.13	1.10	19.13
#FFFFFF	19.13	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001241

Deuteranopia (green-blind)

#000C3E

Tritanopia (blue-blind)

#001622

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #0a033f;
/* rgb */ color: rgb(10, 3, 63);
/* oklch */ color: oklch(18.2% 0.106 274.8);

Tailwind

colors: {
  custom: {
    50: '#534675',
    500: '#0a033f',
    950: '#000000',
  },
}

SCSS

$custom: #0a033f;
$custom-light: #534675;
$custom-dark: #000000;

JSON

{
  "hex": "#0a033f",
  "rgb": {
    "r": 10,
    "g": 3,
    "b": 63
  },
  "hsl": {
    "h": 247,
    "s": 90.909,
    "l": 12.941
  },
  "oklch": {
    "l": 0.1818,
    "c": 0.10562,
    "h": 274.8
  },
  "luminance": 0.00489
}

Semantic roles & 50–950 ramp

primary

#0A033F

secondary

#75811D

accent

#FF29E6

background

#F5F3F7

surface

#E9E5ED

border

#C5C1C8

text

#030008

muted

#78777B

Preview Lab

Preview with #0A033F

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

Preview Lab → · Contrast checker → · Palette generator →