#171B36#171B36

#171B36 is a very dark, muted blue. Relative luminance 0.012; OKLCH L 23.4% C 0.052 H 275.3°. Best body text is #FFFFFF at 16.85:1 contrast (WCAG AA passes).

Color values

HEX	#171B36
RGB	rgb(23, 27, 54)
HSL	hsl(232, 40%, 15%)
HSV	hsv(232, 57%, 21%)
CMYK	cmyk(57.4%, 50%, 0%, 78.8%)
CIE-LAB	lab(10.79, 7.39, -18.31)
CIE-LCH	lch(10.79, 19.74, 291.99°)
OKLab	oklab(23.38% 0.0048 -0.0519)
OKLCH	oklch(23.38% 0.052 275.3)
XYZ	xyz(1.4109, 1.2323, 3.6528)
Luminance	0.0123 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B36 #363217

analogous

#172A36 #171B36 #221736

triadic

#171B36 #36171B #1B3617

tetradic

#171B36 #36172A #363217 #173622

square

#171B36 #36172A #363217 #173622

split-complementary

#171B36 #362217 #2A3617

monochromatic

#090B15 #090B15 #171B36 #293061 #3C468C

Accessibility & contrast

On white

16.85

#171B36 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#171B36 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B36

16.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B36	#FFFFFF	#000000	##FFFFFF
##171B36	1.00	16.85	1.25	16.85
#FFFFFF	16.85	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#101E37

Deuteranopia (green-blind)

#0D1C35

Tritanopia (blue-blind)

#0B2125

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #171b36;
/* rgb */ color: rgb(23, 27, 54);
/* oklch */ color: oklch(23.4% 0.052 275.3);

Tailwind

colors: {
  custom: {
    50: '#56576d',
    500: '#171b36',
    950: '#000000',
  },
}

SCSS

$custom: #171b36;
$custom-light: #56576d;
$custom-dark: #000000;

JSON

{
  "hex": "#171b36",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 54
  },
  "hsl": {
    "h": 232.258,
    "s": 40.26,
    "l": 15.098
  },
  "oklch": {
    "l": 0.23375,
    "c": 0.05209,
    "h": 275.3
  },
  "luminance": 0.01232
}

Semantic roles & 50–950 ramp

primary

#171B36

secondary

#6C663D

accent

#C158D0

background

#F5F5F6

surface

#E9E9EB

border

#C5C5C6

text

#030307

muted

#78787A

Preview Lab

Preview with #171B36

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

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