#171357#171357

#171357 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 24.8% C 0.117 H 276.3°. Best body text is #FFFFFF at 16.57:1 contrast (WCAG AA passes).

Color values

HEX	#171357
RGB	rgb(23, 19, 87)
HSL	hsl(244, 64%, 21%)
HSV	hsv(244, 78%, 34%)
CMYK	cmyk(73.6%, 78.2%, 0%, 65.9%)
CIE-LAB	lab(11.52, 26.11, -40.15)
CIE-LCH	lch(11.52, 47.90, 303.04°)
OKLab	oklab(24.84% 0.0128 -0.116)
OKLCH	oklch(24.84% 0.117 276.3)
XYZ	xyz(2.3060, 1.3358, 9.1513)
Luminance	0.0134 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171357 #535713

analogous

#133157 #171357 #391357

triadic

#171357 #571713 #135717

tetradic

#171357 #571331 #535713 #135739

square

#171357 #571331 #535713 #135739

split-complementary

#171357 #573913 #315713

monochromatic

#070519 #0A0825 #171357 #241E89 #3229BB

Accessibility & contrast

On white

16.57

#171357 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#171357 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171357

16.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171357	#FFFFFF	#000000	##FFFFFF
##171357	1.00	16.57	1.27	16.57
#FFFFFF	16.57	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002159

Deuteranopia (green-blind)

#001C56

Tritanopia (blue-blind)

#002633

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #171357;
/* rgb */ color: rgb(23, 19, 87);
/* oklch */ color: oklch(24.8% 0.117 276.3);

Tailwind

colors: {
  custom: {
    50: '#5f5187',
    500: '#171357',
    950: '#000000',
  },
}

SCSS

$custom: #171357;
$custom-light: #5f5187;
$custom-dark: #000000;

JSON

{
  "hex": "#171357",
  "rgb": {
    "r": 23,
    "g": 19,
    "b": 87
  },
  "hsl": {
    "h": 243.529,
    "s": 64.151,
    "l": 20.784
  },
  "oklch": {
    "l": 0.24844,
    "c": 0.11673,
    "h": 276.3
  },
  "luminance": 0.01336
}

Semantic roles & 50–950 ramp

primary

#171357

secondary

#8A8F36

accent

#E741DD

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #171357

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

Preview Lab → · Contrast checker → · Palette generator →