#171B49#171B49

#171B49 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 25.0% C 0.085 H 274.7°. Best body text is #FFFFFF at 16.29:1 contrast (WCAG AA passes).

Color values

HEX	#171B49
RGB	rgb(23, 27, 73)
HSL	hsl(235, 52%, 19%)
HSV	hsv(235, 68%, 29%)
CMYK	cmyk(68.5%, 63%, 0%, 71.4%)
CIE-LAB	lab(12.27, 14.98, -29.34)
CIE-LCH	lch(12.27, 32.95, 297.05°)
OKLab	oklab(24.96% 0.007 -0.0843)
OKLCH	oklch(24.96% 0.085 274.7)
XYZ	xyz(1.9475, 1.4469, 6.4787)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B49 #494517

analogous

#173449 #171B49 #2C1749

triadic

#171B49 #49171B #1B4917

tetradic

#171B49 #491734 #494517 #17492C

square

#171B49 #491734 #494517 #17492C

split-complementary

#171B49 #492C17 #344917

monochromatic

#070917 #080A1A #171B49 #262C78 #343DA6

Accessibility & contrast

On white

16.29

#171B49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#171B49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B49

16.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B49	#FFFFFF	#000000	##FFFFFF
##171B49	1.00	16.29	1.29	16.29
#FFFFFF	16.29	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00224B

Deuteranopia (green-blind)

#001E48

Tritanopia (blue-blind)

#00262E

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #171b49;
/* rgb */ color: rgb(23, 27, 73);
/* oklch */ color: oklch(25.0% 0.085 274.7);

Tailwind

colors: {
  custom: {
    50: '#5a577c',
    500: '#171b49',
    950: '#000000',
  },
}

SCSS

$custom: #171b49;
$custom-light: #5a577c;
$custom-dark: #000000;

JSON

{
  "hex": "#171b49",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 73
  },
  "hsl": {
    "h": 235.2,
    "s": 52.083,
    "l": 18.824
  },
  "oklch": {
    "l": 0.24958,
    "c": 0.08459,
    "h": 274.7
  },
  "luminance": 0.01447
}

Semantic roles & 50–950 ramp

primary

#171B49

secondary

#807B3C

accent

#D04CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #171B49

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

Preview Lab → · Contrast checker → · Palette generator →