#170D53#170D53

#170D53 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.5% C 0.118 H 278.7°. Best body text is #FFFFFF at 17.23:1 contrast (WCAG AA passes).

Color values

HEX	#170D53
RGB	rgb(23, 13, 83)
HSL	hsl(249, 73%, 19%)
HSV	hsv(249, 84%, 33%)
CMYK	cmyk(72.3%, 84.3%, 0%, 67.5%)
CIE-LAB	lab(9.75, 28.35, -40.35)
CIE-LCH	lch(9.75, 49.31, 305.10°)
OKLab	oklab(23.46% 0.0178 -0.1165)
OKLCH	oklch(23.46% 0.118 278.7)
XYZ	xyz(2.0581, 1.0944, 8.2847)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D53 #49530D

analogous

#0D2653 #170D53 #3A0D53

triadic

#170D53 #53170D #0D5317

tetradic

#170D53 #530D26 #49530D #0D533A

square

#170D53 #530D26 #49530D #0D533A

split-complementary

#170D53 #533A0D #26530D

monochromatic

#07041A #08051E #170D53 #261588 #341EBD

Accessibility & contrast

On white

17.23

#170D53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#170D53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D53

17.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D53	#FFFFFF	#000000	##FFFFFF
##170D53	1.00	17.23	1.22	17.23
#FFFFFF	17.23	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E55

Deuteranopia (green-blind)

#001852

Tritanopia (blue-blind)

#002230

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #170d53;
/* rgb */ color: rgb(23, 13, 83);
/* oklch */ color: oklch(23.5% 0.118 278.7);

Tailwind

colors: {
  custom: {
    50: '#5f4d84',
    500: '#170d53',
    950: '#000000',
  },
}

SCSS

$custom: #170d53;
$custom-light: #5f4d84;
$custom-dark: #000000;

JSON

{
  "hex": "#170d53",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 83
  },
  "hsl": {
    "h": 248.571,
    "s": 72.917,
    "l": 18.824
  },
  "oklch": {
    "l": 0.23456,
    "c": 0.11788,
    "h": 278.7
  },
  "luminance": 0.01095
}

Semantic roles & 50–950 ramp

primary

#170D53

secondary

#808E2E

accent

#F038D5

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #170D53

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

Preview Lab → · Contrast checker → · Palette generator →