#0B174E#0B174E

#0B174E is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.8% C 0.102 H 267.9°. Best body text is #FFFFFF at 16.84:1 contrast (WCAG AA passes).

Color values

HEX	#0B174E
RGB	rgb(11, 23, 78)
HSL	hsl(229, 75%, 17%)
HSV	hsv(229, 86%, 31%)
CMYK	cmyk(85.9%, 70.5%, 0%, 69.4%)
CIE-LAB	lab(10.80, 18.21, -35.21)
CIE-LCH	lch(10.80, 39.64, 297.34°)
OKLab	oklab(23.82% -0.0038 -0.1019)
OKLCH	oklch(23.82% 0.102 267.9)
XYZ	xyz(1.8191, 1.2338, 7.3485)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#0B174E #4E420B

analogous

#0B384E #0B174E #210B4E

triadic

#0B174E #4E0B17 #174E0B

tetradic

#0B174E #4E0B38 #4E420B #0B4E21

square

#0B174E #4E0B38 #4E420B #0B4E21

split-complementary

#0B174E #4E210B #384E0B

monochromatic

#04081B #04081B #0B174E #132784 #1A37B9

Accessibility & contrast

On white

16.84

#0B174E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#0B174E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #0B174E

16.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##0B174E	#FFFFFF	#000000	##FFFFFF
##0B174E	1.00	16.84	1.25	16.84
#FFFFFF	16.84	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002050

Deuteranopia (green-blind)

#001A4D

Tritanopia (blue-blind)

#002630

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #0b174e;
/* rgb */ color: rgb(11, 23, 78);
/* oklch */ color: oklch(23.8% 0.102 267.9);

Tailwind

colors: {
  custom: {
    50: '#575380',
    500: '#0b174e',
    950: '#000000',
  },
}

SCSS

$custom: #0b174e;
$custom-light: #575380;
$custom-dark: #000000;

JSON

{
  "hex": "#0b174e",
  "rgb": {
    "r": 11,
    "g": 23,
    "b": 78
  },
  "hsl": {
    "h": 229.254,
    "s": 75.281,
    "l": 17.451
  },
  "oklch": {
    "l": 0.23819,
    "c": 0.10197,
    "h": 267.9
  },
  "luminance": 0.01234
}

Semantic roles & 50–950 ramp

primary

#0B174E

secondary

#8A792B

accent

#D036F2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #0B174E

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

Preview Lab → · Contrast checker → · Palette generator →