#171D43#171D43

#171D43 is a very dark, moderate blue. Relative luminance 0.015; OKLCH L 24.9% C 0.072 H 273.3°. Best body text is #FFFFFF at 16.24:1 contrast (WCAG AA passes).

Color values

HEX	#171D43
RGB	rgb(23, 29, 67)
HSL	hsl(232, 49%, 18%)
HSV	hsv(232, 66%, 26%)
CMYK	cmyk(65.7%, 56.7%, 0%, 73.7%)
CIE-LAB	lab(12.39, 11.04, -24.97)
CIE-LCH	lch(12.39, 27.30, 293.85°)
OKLab	oklab(24.9% 0.0042 -0.0714)
OKLCH	oklch(24.9% 0.072 273.3)
XYZ	xyz(1.8055, 1.4660, 5.4969)
Luminance	0.0147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D43 #433D17

analogous

#173343 #171D43 #271743

triadic

#171D43 #43171D #1D4317

tetradic

#171D43 #431733 #433D17 #174327

square

#171D43 #431733 #433D17 #174327

split-complementary

#171D43 #432717 #334317

monochromatic

#080A17 #080A17 #171D43 #273171 #36449E

Accessibility & contrast

On white

16.24

#171D43 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#171D43 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D43

16.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D43	#FFFFFF	#000000	##FFFFFF
##171D43	1.00	16.24	1.29	16.24
#FFFFFF	16.24	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#092244

Deuteranopia (green-blind)

#031E42

Tritanopia (blue-blind)

#00262C

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #171d43;
/* rgb */ color: rgb(23, 29, 67);
/* oklch */ color: oklch(24.9% 0.072 273.3);

Tailwind

colors: {
  custom: {
    50: '#595877',
    500: '#171d43',
    950: '#000000',
  },
}

SCSS

$custom: #171d43;
$custom-light: #595877;
$custom-dark: #000000;

JSON

{
  "hex": "#171d43",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 67
  },
  "hsl": {
    "h": 231.818,
    "s": 48.889,
    "l": 17.647
  },
  "oklch": {
    "l": 0.24895,
    "c": 0.07152,
    "h": 273.3
  },
  "luminance": 0.01466
}

Semantic roles & 50–950 ramp

primary

#171D43

secondary

#7A723C

accent

#C64FD8

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171D43

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

Preview Lab → · Contrast checker → · Palette generator →