#0B0437#0B0437

#0B0437 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.3% C 0.093 H 277.9°. Best body text is #FFFFFF at 19.32:1 contrast (WCAG AA passes).

Color values

HEX	#0B0437
RGB	rgb(11, 4, 55)
HSL	hsl(248, 86%, 12%)
HSV	hsv(248, 93%, 22%)
CMYK	cmyk(80%, 92.7%, 0%, 78.4%)
CIE-LAB	lab(3.92, 18.77, -30.16)
CIE-LCH	lch(3.92, 35.52, 301.90°)
OKLab	oklab(17.35% 0.0129 -0.0921)
OKLCH	oklch(17.35% 0.093 277.9)
XYZ	xyz(0.8708, 0.4337, 3.6515)
Luminance	0.0043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0437 #303704

analogous

#041737 #0B0437 #250437

triadic

#0B0437 #370B04 #04370B

tetradic

#0B0437 #370417 #303704 #043725

square

#0B0437 #370417 #303704 #043725

split-complementary

#0B0437 #372504 #173704

monochromatic

#06021D #06021D #0B0437 #160870 #220CA9

Accessibility & contrast

On white

19.32

#0B0437 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#0B0437 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0437

19.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0437	#FFFFFF	#000000	##FFFFFF
##0B0437	1.00	19.32	1.09	19.32
#FFFFFF	19.32	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001038

Deuteranopia (green-blind)

#000C36

Tritanopia (blue-blind)

#00131D

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #0b0437;
/* rgb */ color: rgb(11, 4, 55);
/* oklch */ color: oklch(17.3% 0.093 277.9);

Tailwind

colors: {
  custom: {
    50: '#50476e',
    500: '#0b0437',
    950: '#000000',
  },
}

SCSS

$custom: #0b0437;
$custom-light: #50476e;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0437",
  "rgb": {
    "r": 11,
    "g": 4,
    "b": 55
  },
  "hsl": {
    "h": 248.235,
    "s": 86.441,
    "l": 11.569
  },
  "oklch": {
    "l": 0.17347,
    "c": 0.09298,
    "h": 277.9
  },
  "luminance": 0.00434
}

Semantic roles & 50–950 ramp

primary

#0B0437

secondary

#6D791E

accent

#FD2BE0

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020007

muted

#78777A

Preview Lab

Preview with #0B0437

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

Preview Lab → · Contrast checker → · Palette generator →