#170F52#170F52

#170F52 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.6% C 0.114 H 278.4°. Best body text is #FFFFFF at 17.12:1 contrast (WCAG AA passes).

Color values

HEX	#170F52
RGB	rgb(23, 15, 82)
HSL	hsl(247, 69%, 19%)
HSV	hsv(247, 82%, 32%)
CMYK	cmyk(72%, 81.7%, 0%, 67.8%)
CIE-LAB	lab(10.05, 26.81, -39.17)
CIE-LCH	lch(10.05, 47.47, 304.39°)
OKLab	oklab(23.63% 0.0167 -0.1131)
OKLCH	oklch(23.63% 0.114 278.4)
XYZ	xyz(2.0467, 1.1328, 8.0918)
Luminance	0.0113 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F52 #4A520F

analogous

#0F2952 #170F52 #390F52

triadic

#170F52 #52170F #0F5217

tetradic

#170F52 #520F29 #4A520F #0F5239

square

#170F52 #520F29 #4A520F #0F5239

split-complementary

#170F52 #52390F #29520F

monochromatic

#07051A #08061E #170F52 #261886 #3422B9

Accessibility & contrast

On white

17.12

#170F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#170F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F52

17.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F52	#FFFFFF	#000000	##FFFFFF
##170F52	1.00	17.12	1.23	17.12
#FFFFFF	17.12	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E54

Deuteranopia (green-blind)

#001951

Tritanopia (blue-blind)

#00222F

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170f52;
/* rgb */ color: rgb(23, 15, 82);
/* oklch */ color: oklch(23.6% 0.114 278.4);

Tailwind

colors: {
  custom: {
    50: '#5e4f83',
    500: '#170f52',
    950: '#000000',
  },
}

SCSS

$custom: #170f52;
$custom-light: #5e4f83;
$custom-dark: #000000;

JSON

{
  "hex": "#170f52",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 82
  },
  "hsl": {
    "h": 247.164,
    "s": 69.072,
    "l": 19.02
  },
  "oklch": {
    "l": 0.2363,
    "c": 0.11435,
    "h": 278.4
  },
  "luminance": 0.01133
}

Semantic roles & 50–950 ramp

primary

#170F52

secondary

#818C31

accent

#EC3CD7

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #170F52

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

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