#17173E#17173E

#17173E is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.1% C 0.073 H 279.1°. Best body text is #FFFFFF at 17.09:1 contrast (WCAG AA passes).

Color values

HEX	#17173E
RGB	rgb(23, 23, 62)
HSL	hsl(240, 46%, 17%)
HSV	hsv(240, 63%, 24%)
CMYK	cmyk(62.9%, 62.9%, 0%, 75.7%)
CIE-LAB	lab(10.13, 13.60, -25.09)
CIE-LCH	lch(10.13, 28.54, 298.46°)
OKLab	oklab(23.07% 0.0115 -0.0718)
OKLCH	oklch(23.07% 0.073 279.1)
XYZ	xyz(1.5290, 1.1427, 4.6965)
Luminance	0.0114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17173E #3E3E17

analogous

#172B3E #17173E #2B173E

triadic

#17173E #3E1717 #173E17

tetradic

#17173E #3E172B #3E3E17 #173E2B

square

#17173E #3E172B #3E3E17 #173E2B

split-complementary

#17173E #3E2B17 #2B3E17

monochromatic

#080816 #080816 #17173E #28286B #383897

Accessibility & contrast

On white

17.09

#17173E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#17173E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17173E

17.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17173E	#FFFFFF	#000000	##FFFFFF
##17173E	1.00	17.09	1.23	17.09
#FFFFFF	17.09	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#011D3F

Deuteranopia (green-blind)

#001A3D

Tritanopia (blue-blind)

#052027

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #17173e;
/* rgb */ color: rgb(23, 23, 62);
/* oklch */ color: oklch(23.1% 0.073 279.1);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#17173e",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 62
  },
  "hsl": {
    "h": 240,
    "s": 45.882,
    "l": 16.667
  },
  "oklch": {
    "l": 0.23067,
    "c": 0.07274,
    "h": 279.1
  },
  "luminance": 0.01143
}

Semantic roles & 50–950 ramp

primary

#17173E

secondary

#75753C

accent

#D652D6

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #17173E

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

Preview Lab → · Contrast checker → · Palette generator →