#17174B#17174B

#17174B is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.3% C 0.094 H 276.9°. Best body text is #FFFFFF at 16.66:1 contrast (WCAG AA passes).

Color values

HEX	#17174B
RGB	rgb(23, 23, 75)
HSL	hsl(240, 53%, 19%)
HSV	hsv(240, 69%, 29%)
CMYK	cmyk(69.3%, 69.3%, 0%, 70.6%)
CIE-LAB	lab(11.30, 18.74, -32.31)
CIE-LCH	lch(11.30, 37.35, 300.12°)
OKLab	oklab(24.3% 0.0112 -0.093)
OKLCH	oklch(24.3% 0.094 276.9)
XYZ	xyz(1.9293, 1.3028, 6.8050)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17174B #4B4B17

analogous

#17314B #17174B #31174B

triadic

#17174B #4B1717 #174B17

tetradic

#17174B #4B1731 #4B4B17 #174B31

square

#17174B #4B1731 #4B4B17 #174B31

split-complementary

#17174B #4B3117 #314B17

monochromatic

#070717 #09091C #17174B #25257A #3434A9

Accessibility & contrast

On white

16.66

#17174B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#17174B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17174B

16.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17174B	#FFFFFF	#000000	##FFFFFF
##17174B	1.00	16.66	1.26	16.66
#FFFFFF	16.66	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00204D

Deuteranopia (green-blind)

#001C4A

Tritanopia (blue-blind)

#00242E

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #17174b;
/* rgb */ color: rgb(23, 23, 75);
/* oklch */ color: oklch(24.3% 0.094 276.9);

Tailwind

colors: {
  custom: {
    50: '#5b547e',
    500: '#17174b',
    950: '#000000',
  },
}

SCSS

$custom: #17174b;
$custom-light: #5b547e;
$custom-dark: #000000;

JSON

{
  "hex": "#17174b",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 75
  },
  "hsl": {
    "h": 240,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.24297,
    "c": 0.09372,
    "h": 276.9
  },
  "luminance": 0.01303
}

Semantic roles & 50–950 ramp

primary

#17174B

secondary

#82823C

accent

#DC4BDC

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #17174B

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

Preview Lab → · Contrast checker → · Palette generator →