#0B0539#0B0539

#0B0539 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.094 H 276.9°. Best body text is #FFFFFF at 19.18:1 contrast (WCAG AA passes).

Color values

HEX	#0B0539
RGB	rgb(11, 5, 57)
HSL	hsl(247, 84%, 12%)
HSV	hsv(247, 91%, 22%)
CMYK	cmyk(80.7%, 91.2%, 0%, 77.6%)
CIE-LAB	lab(4.29, 19.51, -31.01)
CIE-LCH	lch(4.29, 36.64, 302.17°)
OKLab	oklab(17.83% 0.0113 -0.0936)
OKLCH	oklch(17.83% 0.094 276.9)
XYZ	xyz(0.9306, 0.4750, 3.9127)
Luminance	0.0047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B0539 #333905

analogous

#051939 #0B0539 #250539

triadic

#0B0539 #390B05 #05390B

tetradic

#0B0539 #390519 #333905 #053925

square

#0B0539 #390519 #333905 #053925

split-complementary

#0B0539 #392505 #193905

monochromatic

#05021C #05021C #0B0539 #160A71 #210FAA

Accessibility & contrast

On white

19.18

#0B0539 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#0B0539 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B0539

19.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B0539	#FFFFFF	#000000	##FFFFFF
##0B0539	1.00	19.18	1.10	19.18
#FFFFFF	19.18	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00113A

Deuteranopia (green-blind)

#000D38

Tritanopia (blue-blind)

#00141F

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #0b0539;
/* rgb */ color: rgb(11, 5, 57);
/* oklch */ color: oklch(17.8% 0.094 276.9);

Tailwind

colors: {
  custom: {
    50: '#514870',
    500: '#0b0539',
    950: '#000000',
  },
}

SCSS

$custom: #0b0539;
$custom-light: #514870;
$custom-dark: #000000;

JSON

{
  "hex": "#0b0539",
  "rgb": {
    "r": 11,
    "g": 5,
    "b": 57
  },
  "hsl": {
    "h": 246.923,
    "s": 83.871,
    "l": 12.157
  },
  "oklch": {
    "l": 0.1783,
    "c": 0.09425,
    "h": 276.9
  },
  "luminance": 0.00475
}

Semantic roles & 50–950 ramp

primary

#0B0539

secondary

#707A20

accent

#FA2EE3

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020007

muted

#78777A

Preview Lab

Preview with #0B0539

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

Preview Lab → · Contrast checker → · Palette generator →