#170D52#170D52

#170D52 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.3% C 0.117 H 278.9°. Best body text is #FFFFFF at 17.27:1 contrast (WCAG AA passes).

Color values

HEX	#170D52
RGB	rgb(23, 13, 82)
HSL	hsl(249, 73%, 19%)
HSV	hsv(249, 84%, 32%)
CMYK	cmyk(72%, 84.1%, 0%, 67.8%)
CIE-LAB	lab(9.63, 28.01, -39.86)
CIE-LCH	lch(9.63, 48.72, 305.09°)
OKLab	oklab(23.34% 0.0181 -0.1151)
OKLCH	oklch(23.34% 0.117 278.9)
XYZ	xyz(2.0198, 1.0790, 8.0828)
Luminance	0.0108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D52 #48520D

analogous

#0D2552 #170D52 #390D52

triadic

#170D52 #52170D #0D5217

tetradic

#170D52 #520D25 #48520D #0D5239

square

#170D52 #520D25 #48520D #0D5239

split-complementary

#170D52 #52390D #25520D

monochromatic

#07041A #08051D #170D52 #261587 #351EBC

Accessibility & contrast

On white

17.27

#170D52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#170D52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D52

17.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D52	#FFFFFF	#000000	##FFFFFF
##170D52	1.00	17.27	1.22	17.27
#FFFFFF	17.27	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D54

Deuteranopia (green-blind)

#001851

Tritanopia (blue-blind)

#00212F

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #170d52;
/* rgb */ color: rgb(23, 13, 82);
/* oklch */ color: oklch(23.3% 0.117 278.9);

Tailwind

colors: {
  custom: {
    50: '#5e4d83',
    500: '#170d52',
    950: '#000000',
  },
}

SCSS

$custom: #170d52;
$custom-light: #5e4d83;
$custom-dark: #000000;

JSON

{
  "hex": "#170d52",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 82
  },
  "hsl": {
    "h": 248.696,
    "s": 72.632,
    "l": 18.627
  },
  "oklch": {
    "l": 0.23335,
    "c": 0.11652,
    "h": 278.9
  },
  "luminance": 0.01079
}

Semantic roles & 50–950 ramp

primary

#170D52

secondary

#7F8D2E

accent

#EF38D5

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #170D52

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

Preview Lab → · Contrast checker → · Palette generator →