#17478F#17478F

#17478F is a dark, vivid blue. Relative luminance 0.067; OKLCH L 40.9% C 0.130 H 258.9°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#17478F
RGB	rgb(23, 71, 143)
HSL	hsl(216, 72%, 33%)
HSV	hsv(216, 84%, 56%)
CMYK	cmyk(83.9%, 50.3%, 0%, 43.9%)
CIE-LAB	lab(31.05, 12.27, -44.34)
CIE-LCH	lch(31.05, 46.00, 285.47°)
OKLab	oklab(40.94% -0.0251 -0.1276)
OKLCH	oklch(40.94% 0.13 258.9)
XYZ	xyz(7.5627, 6.6709, 26.8703)
Luminance	0.0667 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17478F #8F5F17

analogous

#17838F #17478F #23178F

triadic

#17478F #8F1747 #478F17

tetradic

#17478F #8F1783 #8F5F17 #178F23

square

#17478F #8F1783 #8F5F17 #178F23

split-complementary

#17478F #8F2317 #838F17

monochromatic

#061326 #0F2D5A #17478F #1F61C4 #4080E0

Accessibility & contrast

On white

9.00

#17478F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#17478F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17478F

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17478F	#FFFFFF	#000000	##FFFFFF
##17478F	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C4F92

Deuteranopia (green-blind)

#00448E

Tritanopia (blue-blind)

#005864

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #17478f;
/* rgb */ color: rgb(23, 71, 143);
/* oklch */ color: oklch(40.9% 0.130 258.9);

Tailwind

colors: {
  custom: {
    50: '#6a79b0',
    500: '#17478f',
    950: '#000000',
  },
}

SCSS

$custom: #17478f;
$custom-light: #6a79b0;
$custom-dark: #000000;

JSON

{
  "hex": "#17478f",
  "rgb": {
    "r": 23,
    "g": 71,
    "b": 143
  },
  "hsl": {
    "h": 216,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.40943,
    "c": 0.13003,
    "h": 258.9
  },
  "luminance": 0.06672
}

Semantic roles & 50–950 ramp

primary

#17478F

secondary

#C18E41

accent

#A639EF

background

#F6F7FA

surface

#ECEDF5

border

#C7C8CF

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #17478F

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

Preview Lab → · Contrast checker → · Palette generator →