#171C5D#171C5D

#171C5D is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.1% C 0.114 H 272.7°. Best body text is #FFFFFF at 15.43:1 contrast (WCAG AA passes).

Color values

HEX	#171C5D
RGB	rgb(23, 28, 93)
HSL	hsl(236, 60%, 23%)
HSV	hsv(236, 75%, 36%)
CMYK	cmyk(75.3%, 69.9%, 0%, 63.5%)
CIE-LAB	lab(14.42, 22.28, -39.44)
CIE-LCH	lch(14.42, 45.30, 299.46°)
OKLab	oklab(27.12% 0.0053 -0.1139)
OKLCH	oklch(27.12% 0.114 272.7)
XYZ	xyz(2.7437, 1.8027, 10.5572)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C5D #5D5817

analogous

#173F5D #171C5D #35175D

triadic

#171C5D #5D171C #1C5D17

tetradic

#171C5D #5D173F #5D5817 #175D35

square

#171C5D #5D173F #5D5817 #175D35

split-complementary

#171C5D #5D3517 #3F5D17

monochromatic

#060719 #0B0D2C #171C5D #232B8E #2F3ABF

Accessibility & contrast

On white

15.43

#171C5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171C5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C5D

15.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C5D	#FFFFFF	#000000	##FFFFFF
##171C5D	1.00	15.43	1.36	15.43
#FFFFFF	15.43	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285F

Deuteranopia (green-blind)

#00215C

Tritanopia (blue-blind)

#002D39

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #171c5d;
/* rgb */ color: rgb(23, 28, 93);
/* oklch */ color: oklch(27.1% 0.114 272.7);

Tailwind

colors: {
  custom: {
    50: '#60588c',
    500: '#171c5d',
    950: '#000000',
  },
}

SCSS

$custom: #171c5d;
$custom-light: #60588c;
$custom-dark: #000000;

JSON

{
  "hex": "#171c5d",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 93
  },
  "hsl": {
    "h": 235.714,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27124,
    "c": 0.11405,
    "h": 272.7
  },
  "luminance": 0.01803
}

Semantic roles & 50–950 ramp

primary

#171C5D

secondary

#948E3C

accent

#D844E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #171C5D

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

Preview Lab → · Contrast checker → · Palette generator →