#170F5A#170F5A

#170F5A is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.6% C 0.125 H 276.7°. Best body text is #FFFFFF at 16.77:1 contrast (WCAG AA passes).

Color values

HEX	#170F5A
RGB	rgb(23, 15, 90)
HSL	hsl(246, 71%, 21%)
HSV	hsv(246, 83%, 35%)
CMYK	cmyk(74.4%, 83.3%, 0%, 64.7%)
CIE-LAB	lab(11.01, 29.65, -43.04)
CIE-LCH	lch(11.01, 52.26, 304.56°)
OKLab	oklab(24.58% 0.0146 -0.1244)
OKLCH	oklch(24.58% 0.125 276.7)
XYZ	xyz(2.3690, 1.2618, 9.7896)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F5A #525A0F

analogous

#0F2C5A #170F5A #3C0F5A

triadic

#170F5A #5A170F #0F5A17

tetradic

#170F5A #5A0F2C #525A0F #0F5A3C

square

#170F5A #5A0F2C #525A0F #0F5A3C

split-complementary

#170F5A #5A3C0F #2C5A0F

monochromatic

#07041A #0A0626 #170F5A #24188E #3220C3

Accessibility & contrast

On white

16.77

#170F5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#170F5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F5A

16.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F5A	#FFFFFF	#000000	##FFFFFF
##170F5A	1.00	16.77	1.25	16.77
#FFFFFF	16.77	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215C

Deuteranopia (green-blind)

#001A59

Tritanopia (blue-blind)

#002534

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #170f5a;
/* rgb */ color: rgb(23, 15, 90);
/* oklch */ color: oklch(24.6% 0.125 276.7);

Tailwind

colors: {
  custom: {
    50: '#604f8a',
    500: '#170f5a',
    950: '#000000',
  },
}

SCSS

$custom: #170f5a;
$custom-light: #604f8a;
$custom-dark: #000000;

JSON

{
  "hex": "#170f5a",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 90
  },
  "hsl": {
    "h": 246.4,
    "s": 71.429,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24583,
    "c": 0.12523,
    "h": 276.7
  },
  "luminance": 0.01262
}

Semantic roles & 50–950 ramp

primary

#170F5A

secondary

#899431

accent

#EE3ADB

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#05020C

muted

#7A787D

Preview Lab

Preview with #170F5A

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

Preview Lab → · Contrast checker → · Palette generator →