#0B1740#0B1740

#0B1740 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 22.4% C 0.080 H 267.2°. Best body text is #FFFFFF at 17.34:1 contrast (WCAG AA passes).

Color values

HEX	#0B1740
RGB	rgb(11, 23, 64)
HSL	hsl(226, 71%, 15%)
HSV	hsv(226, 83%, 25%)
CMYK	cmyk(82.8%, 64.1%, 0%, 74.9%)
CIE-LAB	lab(9.43, 12.04, -27.68)
CIE-LCH	lch(9.43, 30.18, 293.51°)
OKLab	oklab(22.37% -0.0039 -0.0798)
OKLCH	oklch(22.37% 0.08 267.2)
XYZ	xyz(1.3695, 1.0540, 4.9808)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B1740 #40340B

analogous

#0B3240 #0B1740 #1A0B40

triadic

#0B1740 #400B17 #17400B

tetradic

#0B1740 #400B32 #40340B #0B401A

square

#0B1740 #400B32 #40340B #0B401A

split-complementary

#0B1740 #401A0B #32400B

monochromatic

#04091A #04091A #0B1740 #142A74 #1D3DA8

Accessibility & contrast

On white

17.34

#0B1740 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#0B1740 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B1740

17.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B1740	#FFFFFF	#000000	##FFFFFF
##0B1740	1.00	17.34	1.21	17.34
#FFFFFF	17.34	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D41

Deuteranopia (green-blind)

#00183F

Tritanopia (blue-blind)

#002128

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #0b1740;
/* rgb */ color: rgb(11, 23, 64);
/* oklch */ color: oklch(22.4% 0.080 267.2);

Tailwind

colors: {
  custom: {
    50: '#535375',
    500: '#0b1740',
    950: '#000000',
  },
}

SCSS

$custom: #0b1740;
$custom-light: #535375;
$custom-dark: #000000;

JSON

{
  "hex": "#0b1740",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 64
  },
  "hsl": {
    "h": 226.415,
    "s": 70.667,
    "l": 14.706
  },
  "oklch": {
    "l": 0.22374,
    "c": 0.07988,
    "h": 267.2
  },
  "luminance": 0.01054
}

Semantic roles & 50–950 ramp

primary

#0B1740

secondary

#7D6A2A

accent

#C53AED

background

#F5F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #0B1740

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

Preview Lab → · Contrast checker → · Palette generator →