#170F5C#170F5C

#170F5C is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.8% C 0.128 H 276.3°. Best body text is #FFFFFF at 16.67:1 contrast (WCAG AA passes).

Color values

HEX	#170F5C
RGB	rgb(23, 15, 92)
HSL	hsl(246, 72%, 21%)
HSV	hsv(246, 84%, 36%)
CMYK	cmyk(75%, 83.7%, 0%, 63.9%)
CIE-LAB	lab(11.25, 30.35, -43.98)
CIE-LCH	lch(11.25, 53.44, 304.61°)
OKLab	oklab(24.83% 0.014 -0.1271)
OKLCH	oklch(24.83% 0.128 276.3)
XYZ	xyz(2.4553, 1.2963, 10.2440)
Luminance	0.0130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F5C #545C0F

analogous

#0F2D5C #170F5C #3D0F5C

triadic

#170F5C #5C170F #0F5C17

tetradic

#170F5C #5C0F2D #545C0F #0F5C3D

square

#170F5C #5C0F2D #545C0F #0F5C3D

split-complementary

#170F5C #5C3D0F #2D5C0F

monochromatic

#07041A #0A0627 #170F5C #241891 #3120C5

Accessibility & contrast

On white

16.67

#170F5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#170F5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F5C

16.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F5C	#FFFFFF	#000000	##FFFFFF
##170F5C	1.00	16.67	1.26	16.67
#FFFFFF	16.67	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00215E

Deuteranopia (green-blind)

#001B5B

Tritanopia (blue-blind)

#002635

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #170f5c;
/* rgb */ color: rgb(23, 15, 92);
/* oklch */ color: oklch(24.8% 0.128 276.3);

Tailwind

colors: {
  custom: {
    50: '#614f8b',
    500: '#170f5c',
    950: '#000000',
  },
}

SCSS

$custom: #170f5c;
$custom-light: #614f8b;
$custom-dark: #000000;

JSON

{
  "hex": "#170f5c",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 92
  },
  "hsl": {
    "h": 246.234,
    "s": 71.963,
    "l": 20.98
  },
  "oklch": {
    "l": 0.24826,
    "c": 0.1279,
    "h": 276.3
  },
  "luminance": 0.01297
}

Semantic roles & 50–950 ramp

primary

#170F5C

secondary

#8B9531

accent

#EF39DC

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #170F5C

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

Preview Lab → · Contrast checker → · Palette generator →