#171D41#171D41

#171D41 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.7% C 0.068 H 273.3°. Best body text is #FFFFFF at 16.30:1 contrast (WCAG AA passes).

Color values

HEX	#171D41
RGB	rgb(23, 29, 65)
HSL	hsl(231, 48%, 17%)
HSV	hsv(231, 65%, 25%)
CMYK	cmyk(64.6%, 55.4%, 0%, 74.5%)
CIE-LAB	lab(12.24, 10.23, -23.81)
CIE-LCH	lch(12.24, 25.92, 293.25°)
OKLab	oklab(24.73% 0.0039 -0.068)
OKLCH	oklch(24.73% 0.068 273.3)
XYZ	xyz(1.7465, 1.4424, 5.1864)
Luminance	0.0144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D41 #413B17

analogous

#173241 #171D41 #261741

triadic

#171D41 #41171D #1D4117

tetradic

#171D41 #411732 #413B17 #174126

square

#171D41 #411732 #413B17 #174126

split-complementary

#171D41 #412617 #324117

monochromatic

#080A17 #080A17 #171D41 #27316E #37459B

Accessibility & contrast

On white

16.30

#171D41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#171D41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D41

16.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D41	#FFFFFF	#000000	##FFFFFF
##171D41	1.00	16.30	1.29	16.30
#FFFFFF	16.30	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B2242

Deuteranopia (green-blind)

#061E40

Tritanopia (blue-blind)

#01252B

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #171d41;
/* rgb */ color: rgb(23, 29, 65);
/* oklch */ color: oklch(24.7% 0.068 273.3);

Tailwind

colors: {
  custom: {
    50: '#585876',
    500: '#171d41',
    950: '#000000',
  },
}

SCSS

$custom: #171d41;
$custom-light: #585876;
$custom-dark: #000000;

JSON

{
  "hex": "#171d41",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 65
  },
  "hsl": {
    "h": 231.429,
    "s": 47.727,
    "l": 17.255
  },
  "oklch": {
    "l": 0.2473,
    "c": 0.06811,
    "h": 273.3
  },
  "luminance": 0.01443
}

Semantic roles & 50–950 ramp

primary

#171D41

secondary

#786F3C

accent

#C450D7

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040308

muted

#79787B

Preview Lab

Preview with #171D41

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

Preview Lab → · Contrast checker → · Palette generator →