#0B033A#0B033A

#0B033A is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.5% C 0.099 H 277.3°. Best body text is #FFFFFF at 19.29:1 contrast (WCAG AA passes).

Color values

HEX	#0B033A
RGB	rgb(11, 3, 58)
HSL	hsl(249, 90%, 12%)
HSV	hsv(249, 95%, 23%)
CMYK	cmyk(81%, 94.8%, 0%, 77.3%)
CIE-LAB	lab(3.99, 20.93, -32.23)
CIE-LCH	lch(3.99, 38.43, 303.00°)
OKLab	oklab(17.55% 0.0125 -0.0979)
OKLCH	oklch(17.55% 0.099 277.3)
XYZ	xyz(0.9340, 0.4417, 4.0382)
Luminance	0.0044 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B033A #323A03

analogous

#03173A #0B033A #27033A

triadic

#0B033A #3A0B03 #033A0B

tetradic

#0B033A #3A0317 #323A03 #033A27

square

#0B033A #3A0317 #323A03 #033A27

split-complementary

#0B033A #3A2703 #173A03

monochromatic

#06021D #06021D #0B033A #160674 #2109AE

Accessibility & contrast

On white

19.29

#0B033A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#0B033A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B033A

19.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B033A	#FFFFFF	#000000	##FFFFFF
##0B033A	1.00	19.29	1.09	19.29
#FFFFFF	19.29	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103B

Deuteranopia (green-blind)

#000C39

Tritanopia (blue-blind)

#00141F

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #0b033a;
/* rgb */ color: rgb(11, 3, 58);
/* oklch */ color: oklch(17.5% 0.099 277.3);

Tailwind

colors: {
  custom: {
    50: '#524771',
    500: '#0b033a',
    950: '#000000',
  },
}

SCSS

$custom: #0b033a;
$custom-light: #524771;
$custom-dark: #000000;

JSON

{
  "hex": "#0b033a",
  "rgb": {
    "r": 11,
    "g": 3,
    "b": 58
  },
  "hsl": {
    "h": 248.727,
    "s": 90.164,
    "l": 11.961
  },
  "oklch": {
    "l": 0.17549,
    "c": 0.09867,
    "h": 277.3
  },
  "luminance": 0.00442
}

Semantic roles & 50–950 ramp

primary

#0B033A

secondary

#6F7D1C

accent

#FF29E0

background

#F4F3F6

surface

#E7E5EC

border

#C3C1C7

text

#030008

muted

#78777B

Preview Lab

Preview with #0B033A

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

Preview Lab → · Contrast checker → · Palette generator →