#171D5D#171D5D

#171D5D is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.3% C 0.113 H 272.3°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#171D5D
RGB	rgb(23, 29, 93)
HSL	hsl(235, 60%, 23%)
HSV	hsv(235, 75%, 36%)
CMYK	cmyk(75.3%, 68.8%, 0%, 63.5%)
CIE-LAB	lab(14.68, 21.57, -39.00)
CIE-LCH	lch(14.68, 44.57, 298.94°)
OKLab	oklab(27.32% 0.0045 -0.1126)
OKLCH	oklch(27.32% 0.113 272.3)
XYZ	xyz(2.7678, 1.8509, 10.5652)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D5D #5D5717

analogous

#17405D #171D5D #34175D

triadic

#171D5D #5D171D #1D5D17

tetradic

#171D5D #5D1740 #5D5717 #175D34

square

#171D5D #5D1740 #5D5717 #175D34

split-complementary

#171D5D #5D3417 #405D17

monochromatic

#060819 #0B0E2C #171D5D #232C8E #2F3CBF

Accessibility & contrast

On white

15.33

#171D5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171D5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D5D

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D5D	#FFFFFF	#000000	##FFFFFF
##171D5D	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285F

Deuteranopia (green-blind)

#00225C

Tritanopia (blue-blind)

#002E3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171d5d;
/* rgb */ color: rgb(23, 29, 93);
/* oklch */ color: oklch(27.3% 0.113 272.3);

Tailwind

colors: {
  custom: {
    50: '#5f598c',
    500: '#171d5d',
    950: '#000000',
  },
}

SCSS

$custom: #171d5d;
$custom-light: #5f598c;
$custom-dark: #000000;

JSON

{
  "hex": "#171d5d",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 93
  },
  "hsl": {
    "h": 234.857,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.27321,
    "c": 0.11272,
    "h": 272.3
  },
  "luminance": 0.01851
}

Semantic roles & 50–950 ramp

primary

#171D5D

secondary

#948C3C

accent

#D644E3

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #171D5D

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

Preview Lab → · Contrast checker → · Palette generator →