#0B1741#0B1741

#0B1741 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.5% C 0.082 H 267.3°. Best body text is #FFFFFF at 17.31:1 contrast (WCAG AA passes).

Color values

HEX	#0B1741
RGB	rgb(11, 23, 65)
HSL	hsl(227, 71%, 15%)
HSV	hsv(227, 83%, 25%)
CMYK	cmyk(83.1%, 64.6%, 0%, 74.5%)
CIE-LAB	lab(9.52, 12.49, -28.24)
CIE-LCH	lch(9.52, 30.88, 293.86°)
OKLab	oklab(22.47% -0.0038 -0.0814)
OKLCH	oklch(22.47% 0.082 267.3)
XYZ	xyz(1.3982, 1.0654, 5.1320)
Luminance	0.0107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1741 #41350B

analogous

#0B3241 #0B1741 #1A0B41

triadic

#0B1741 #410B17 #17410B

tetradic

#0B1741 #410B32 #41350B #0B411A

square

#0B1741 #410B32 #41350B #0B411A

split-complementary

#0B1741 #411A0B #32410B

monochromatic

#04091A #04091A #0B1741 #142A75 #1D3CAA

Accessibility & contrast

On white

17.31

#0B1741 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0B1741 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1741

17.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1741	#FFFFFF	#000000	##FFFFFF
##0B1741	1.00	17.31	1.21	17.31
#FFFFFF	17.31	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D42

Deuteranopia (green-blind)

#001840

Tritanopia (blue-blind)

#002129

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #0b1741;
/* rgb */ color: rgb(11, 23, 65);
/* oklch */ color: oklch(22.5% 0.082 267.3);

Tailwind

colors: {
  custom: {
    50: '#535376',
    500: '#0b1741',
    950: '#000000',
  },
}

SCSS

$custom: #0b1741;
$custom-light: #535376;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1741",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 65
  },
  "hsl": {
    "h": 226.667,
    "s": 71.053,
    "l": 14.902
  },
  "oklch": {
    "l": 0.22472,
    "c": 0.08152,
    "h": 267.3
  },
  "luminance": 0.01066
}

Semantic roles & 50–950 ramp

primary

#0B1741

secondary

#7E6B2A

accent

#C63AEE

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B1741

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

Preview Lab → · Contrast checker → · Palette generator →