#170D56#170D56

#170D56 is a very dark, vivid blue. Relative luminance 0.011; OKLCH L 23.8% C 0.122 H 277.9°. Best body text is #FFFFFF at 17.10:1 contrast (WCAG AA passes).

Color values

HEX	#170D56
RGB	rgb(23, 13, 86)
HSL	hsl(248, 74%, 19%)
HSV	hsv(248, 85%, 34%)
CMYK	cmyk(73.3%, 84.9%, 0%, 66.3%)
CIE-LAB	lab(10.12, 29.40, -41.79)
CIE-LCH	lch(10.12, 51.09, 305.12°)
OKLab	oklab(23.82% 0.0169 -0.1207)
OKLCH	oklch(23.82% 0.122 277.9)
XYZ	xyz(2.1764, 1.1417, 8.9080)
Luminance	0.0114 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D56 #4C560D

analogous

#0D2856 #170D56 #3C0D56

triadic

#170D56 #56170D #0D5617

tetradic

#170D56 #560D28 #4C560D #0D563C

square

#170D56 #560D28 #4C560D #0D563C

split-complementary

#170D56 #563C0D #28560D

monochromatic

#07041B #090521 #170D56 #25158B #331DC0

Accessibility & contrast

On white

17.10

#170D56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#170D56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D56

17.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D56	#FFFFFF	#000000	##FFFFFF
##170D56	1.00	17.10	1.23	17.10
#FFFFFF	17.10	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F58

Deuteranopia (green-blind)

#001955

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170d56;
/* rgb */ color: rgb(23, 13, 86);
/* oklch */ color: oklch(23.8% 0.122 277.9);

Tailwind

colors: {
  custom: {
    50: '#5f4e87',
    500: '#170d56',
    950: '#000000',
  },
}

SCSS

$custom: #170d56;
$custom-light: #5f4e87;
$custom-dark: #000000;

JSON

{
  "hex": "#170d56",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 86
  },
  "hsl": {
    "h": 248.219,
    "s": 73.737,
    "l": 19.412
  },
  "oklch": {
    "l": 0.2382,
    "c": 0.1219,
    "h": 277.9
  },
  "luminance": 0.01142
}

Semantic roles & 50–950 ramp

primary

#170D56

secondary

#83912E

accent

#F037D7

background

#F6F4F8

surface

#EBE7EF

border

#C6C3CA

text

#05010B

muted

#7A777C

Preview Lab

Preview with #170D56

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

Preview Lab → · Contrast checker → · Palette generator →