#170D5C#170D5C

#170D5C is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.6% C 0.130 H 276.6°. Best body text is #FFFFFF at 16.82:1 contrast (WCAG AA passes).

Color values

HEX	#170D5C
RGB	rgb(23, 13, 92)
HSL	hsl(248, 75%, 21%)
HSV	hsv(248, 86%, 36%)
CMYK	cmyk(75%, 85.9%, 0%, 63.9%)
CIE-LAB	lab(10.87, 31.46, -44.61)
CIE-LCH	lch(10.87, 54.59, 305.19°)
OKLab	oklab(24.56% 0.015 -0.1289)
OKLCH	oklch(24.56% 0.13 276.6)
XYZ	xyz(2.4284, 1.2425, 10.2350)
Luminance	0.0124 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D5C #525C0D

analogous

#0D2A5C #170D5C #3E0D5C

triadic

#170D5C #5C170D #0D5C17

tetradic

#170D5C #5C0D2A #525C0D #0D5C3E

square

#170D5C #5C0D2A #525C0D #0D5C3E

split-complementary

#170D5C #5C3E0D #2A5C0D

monochromatic

#07041B #0A0526 #170D5C #241592 #321CC7

Accessibility & contrast

On white

16.82

#170D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#170D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D5C

16.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D5C	#FFFFFF	#000000	##FFFFFF
##170D5C	1.00	16.82	1.25	16.82
#FFFFFF	16.82	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205E

Deuteranopia (green-blind)

#001A5B

Tritanopia (blue-blind)

#002535

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #170d5c;
/* rgb */ color: rgb(23, 13, 92);
/* oklch */ color: oklch(24.6% 0.130 276.6);

Tailwind

colors: {
  custom: {
    50: '#614e8b',
    500: '#170d5c',
    950: '#000000',
  },
}

SCSS

$custom: #170d5c;
$custom-light: #614e8b;
$custom-dark: #000000;

JSON

{
  "hex": "#170d5c",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 92
  },
  "hsl": {
    "h": 247.595,
    "s": 75.238,
    "l": 20.588
  },
  "oklch": {
    "l": 0.24559,
    "c": 0.12981,
    "h": 276.6
  },
  "luminance": 0.01243
}

Semantic roles & 50–950 ramp

primary

#170D5C

secondary

#89962F

accent

#F236DA

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #170D5C

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

Preview Lab → · Contrast checker → · Palette generator →