#0B1640#0B1640

#0B1640 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.1% C 0.081 H 267.9°. Best body text is #FFFFFF at 17.46:1 contrast (WCAG AA passes).

Color values

HEX	#0B1640
RGB	rgb(11, 22, 64)
HSL	hsl(228, 71%, 15%)
HSV	hsv(228, 83%, 25%)
CMYK	cmyk(82.8%, 65.6%, 0%, 74.9%)
CIE-LAB	lab(9.12, 12.83, -28.19)
CIE-LCH	lch(9.12, 30.98, 294.47°)
OKLab	oklab(22.14% -0.003 -0.0813)
OKLCH	oklch(22.14% 0.081 267.9)
XYZ	xyz(1.3500, 1.0150, 4.9743)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1640 #40350B

analogous

#0B3140 #0B1640 #1B0B40

triadic

#0B1640 #400B16 #16400B

tetradic

#0B1640 #400B31 #40350B #0B401B

square

#0B1640 #400B31 #40350B #0B401B

split-complementary

#0B1640 #401B0B #31400B

monochromatic

#04091A #04091A #0B1640 #142874 #1D3AA8

Accessibility & contrast

On white

17.46

#0B1640 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#0B1640 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1640

17.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1640	#FFFFFF	#000000	##FFFFFF
##0B1640	1.00	17.46	1.20	17.46
#FFFFFF	17.46	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C41

Deuteranopia (green-blind)

#00173F

Tritanopia (blue-blind)

#002028

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b1640;
/* rgb */ color: rgb(11, 22, 64);
/* oklch */ color: oklch(22.1% 0.081 267.9);

Tailwind

colors: {
  custom: {
    50: '#535275',
    500: '#0b1640',
    950: '#000000',
  },
}

SCSS

$custom: #0b1640;
$custom-light: #535275;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1640",
  "rgb": {
    "r": 11,
    "g": 22,
    "b": 64
  },
  "hsl": {
    "h": 227.547,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.22136,
    "c": 0.08137,
    "h": 267.9
  },
  "luminance": 0.01015
}

Semantic roles & 50–950 ramp

primary

#0B1640

secondary

#7D6C2A

accent

#C83AED

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B1640

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

Preview Lab → · Contrast checker → · Palette generator →