#171D3E#171D3E

#171D3E is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.5% C 0.063 H 273.1°. Best body text is #FFFFFF at 16.38:1 contrast (WCAG AA passes).

Color values

HEX	#171D3E
RGB	rgb(23, 29, 62)
HSL	hsl(231, 46%, 17%)
HSV	hsv(231, 63%, 24%)
CMYK	cmyk(62.9%, 53.2%, 0%, 75.7%)
CIE-LAB	lab(12.01, 9.02, -22.06)
CIE-LCH	lch(12.01, 23.83, 292.24°)
OKLab	oklab(24.49% 0.0035 -0.0628)
OKLCH	oklch(24.49% 0.063 273.1)
XYZ	xyz(1.6619, 1.4086, 4.7408)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D3E #3E3817

analogous

#17313E #171D3E #25173E

triadic

#171D3E #3E171D #1D3E17

tetradic

#171D3E #3E1731 #3E3817 #173E25

square

#171D3E #3E1731 #3E3817 #173E25

split-complementary

#171D3E #3E2517 #313E17

monochromatic

#080A16 #080A16 #171D3E #28326B #384797

Accessibility & contrast

On white

16.38

#171D3E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#171D3E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D3E

16.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D3E	#FFFFFF	#000000	##FFFFFF
##171D3E	1.00	16.38	1.28	16.38
#FFFFFF	16.38	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E213F

Deuteranopia (green-blind)

#091E3D

Tritanopia (blue-blind)

#04242A

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #171d3e;
/* rgb */ color: rgb(23, 29, 62);
/* oklch */ color: oklch(24.5% 0.063 273.1);

Tailwind

colors: {
  custom: {
    50: '#585873',
    500: '#171d3e',
    950: '#000000',
  },
}

SCSS

$custom: #171d3e;
$custom-light: #585873;
$custom-dark: #000000;

JSON

{
  "hex": "#171d3e",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 62
  },
  "hsl": {
    "h": 230.769,
    "s": 45.882,
    "l": 16.667
  },
  "oklch": {
    "l": 0.24489,
    "c": 0.06294,
    "h": 273.1
  },
  "luminance": 0.01409
}

Semantic roles & 50–950 ramp

primary

#171D3E

secondary

#756C3C

accent

#C152D6

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #171D3E

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

Preview Lab → · Contrast checker → · Palette generator →