#17173D#17173D

#17173D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.0% C 0.071 H 279.2°. Best body text is #FFFFFF at 17.12:1 contrast (WCAG AA passes).

Color values

HEX	#17173D
RGB	rgb(23, 23, 61)
HSL	hsl(240, 45%, 16%)
HSV	hsv(240, 62%, 24%)
CMYK	cmyk(62.3%, 62.3%, 0%, 76.1%)
CIE-LAB	lab(10.04, 13.21, -24.52)
CIE-LCH	lch(10.04, 27.85, 298.31°)
OKLab	oklab(22.98% 0.0114 -0.0701)
OKLCH	oklch(22.98% 0.071 279.2)
XYZ	xyz(1.5018, 1.1318, 4.5533)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17173D #3D3D17

analogous

#172A3D #17173D #2A173D

triadic

#17173D #3D1717 #173D17

tetradic

#17173D #3D172A #3D3D17 #173D2A

square

#17173D #3D172A #3D3D17 #173D2A

split-complementary

#17173D #3D2A17 #2A3D17

monochromatic

#080816 #080816 #17173D #282869 #393996

Accessibility & contrast

On white

17.12

#17173D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#17173D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17173D

17.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17173D	#FFFFFF	#000000	##FFFFFF
##17173D	1.00	17.12	1.23	17.12
#FFFFFF	17.12	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#031D3E

Deuteranopia (green-blind)

#001A3C

Tritanopia (blue-blind)

#062027

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #17173d;
/* rgb */ color: rgb(23, 23, 61);
/* oklch */ color: oklch(23.0% 0.071 279.2);

Tailwind

colors: {
  custom: {
    50: '#585373',
    500: '#17173d',
    950: '#000000',
  },
}

SCSS

$custom: #17173d;
$custom-light: #585373;
$custom-dark: #000000;

JSON

{
  "hex": "#17173d",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 61
  },
  "hsl": {
    "h": 240,
    "s": 45.238,
    "l": 16.471
  },
  "oklch": {
    "l": 0.22979,
    "c": 0.07106,
    "h": 279.2
  },
  "luminance": 0.01132
}

Semantic roles & 50–950 ramp

primary

#17173D

secondary

#74743C

accent

#D553D5

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #17173D

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

Preview Lab → · Contrast checker → · Palette generator →