#17174D#17174D

#17174D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.5% C 0.097 H 276.5°. Best body text is #FFFFFF at 16.59:1 contrast (WCAG AA passes).

Color values

HEX	#17174D
RGB	rgb(23, 23, 77)
HSL	hsl(240, 54%, 20%)
HSV	hsv(240, 70%, 30%)
CMYK	cmyk(70.1%, 70.1%, 0%, 69.8%)
CIE-LAB	lab(11.49, 19.53, -33.38)
CIE-LCH	lch(11.49, 38.67, 300.34°)
OKLab	oklab(24.5% 0.011 -0.0962)
OKLCH	oklch(24.5% 0.097 276.5)
XYZ	xyz(1.9989, 1.3306, 7.1712)
Luminance	0.0133 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.66

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17174D #4D4D17

analogous

#17324D #17174D #32174D

triadic

#17174D #4D1717 #174D17

tetradic

#17174D #4D1732 #4D4D17 #174D32

square

#17174D #4D1732 #4D4D17 #174D32

split-complementary

#17174D #4D3217 #324D17

monochromatic

#070718 #09091E #17174D #25257C #3333AB

Accessibility & contrast

On white

16.59

#17174D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#17174D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17174D

16.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17174D	#FFFFFF	#000000	##FFFFFF
##17174D	1.00	16.59	1.27	16.59
#FFFFFF	16.59	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00214F

Deuteranopia (green-blind)

#001C4C

Tritanopia (blue-blind)

#00252F

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #17174d;
/* rgb */ color: rgb(23, 23, 77);
/* oklch */ color: oklch(24.5% 0.097 276.5);

Tailwind

colors: {
  custom: {
    50: '#5c547f',
    500: '#17174d',
    950: '#000000',
  },
}

SCSS

$custom: #17174d;
$custom-light: #5c547f;
$custom-dark: #000000;

JSON

{
  "hex": "#17174d",
  "rgb": {
    "r": 23,
    "g": 23,
    "b": 77
  },
  "hsl": {
    "h": 240,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.24499,
    "c": 0.09681,
    "h": 276.5
  },
  "luminance": 0.01331
}

Semantic roles & 50–950 ramp

primary

#17174D

secondary

#84843C

accent

#DD4ADD

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #17174D

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

Preview Lab → · Contrast checker → · Palette generator →