#171358#171358

#171358 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 25.0% C 0.118 H 276.1°. Best body text is #FFFFFF at 16.53:1 contrast (WCAG AA passes).

Color values

HEX	#171358
RGB	rgb(23, 19, 88)
HSL	hsl(243, 64%, 21%)
HSV	hsv(243, 78%, 35%)
CMYK	cmyk(73.9%, 78.4%, 0%, 65.5%)
CIE-LAB	lab(11.64, 26.48, -40.64)
CIE-LCH	lch(11.64, 48.51, 303.08°)
OKLab	oklab(24.96% 0.0126 -0.1174)
OKLCH	oklch(24.96% 0.118 276.1)
XYZ	xyz(2.3471, 1.3523, 9.3680)
Luminance	0.0135 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171358 #545813

analogous

#133158 #171358 #391358

triadic

#171358 #581713 #135817

tetradic

#171358 #581331 #545813 #135839

square

#171358 #581331 #545813 #135839

split-complementary

#171358 #583913 #315813

monochromatic

#070519 #0A0826 #171358 #241E8A #3129BD

Accessibility & contrast

On white

16.53

#171358 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.27

#171358 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171358

16.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171358	#FFFFFF	#000000	##FFFFFF
##171358	1.00	16.53	1.27	16.53
#FFFFFF	16.53	1.00	21.00	1.00
#000000	1.27	21.00	1.00	21.00
##FFFFFF	16.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00225A

Deuteranopia (green-blind)

#001C57

Tritanopia (blue-blind)

#002634

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #171358;
/* rgb */ color: rgb(23, 19, 88);
/* oklch */ color: oklch(25.0% 0.118 276.1);

Tailwind

colors: {
  custom: {
    50: '#5f5188',
    500: '#171358',
    950: '#000000',
  },
}

SCSS

$custom: #171358;
$custom-light: #5f5188;
$custom-dark: #000000;

JSON

{
  "hex": "#171358",
  "rgb": {
    "r": 23,
    "g": 19,
    "b": 88
  },
  "hsl": {
    "h": 243.478,
    "s": 64.486,
    "l": 20.98
  },
  "oklch": {
    "l": 0.24958,
    "c": 0.11812,
    "h": 276.1
  },
  "luminance": 0.01352
}

Semantic roles & 50–950 ramp

primary

#171358

secondary

#8B9037

accent

#E740DE

background

#F5F4F8

surface

#EAE7F0

border

#C6C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #171358

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

Preview Lab → · Contrast checker → · Palette generator →