#171F49#171F49

#171F49 is a dark, moderate blue. Relative luminance 0.016; OKLCH L 25.9% C 0.078 H 271.7°. Best body text is #FFFFFF at 15.81:1 contrast (WCAG AA passes).

Color values

HEX	#171F49
RGB	rgb(23, 31, 73)
HSL	hsl(230, 52%, 19%)
HSV	hsv(230, 68%, 29%)
CMYK	cmyk(68.5%, 57.5%, 0%, 71.4%)
CIE-LAB	lab(13.49, 11.97, -27.37)
CIE-LCH	lch(13.49, 29.87, 293.62°)
OKLab	oklab(25.88% 0.0024 -0.0784)
OKLCH	oklch(25.88% 0.078 271.7)
XYZ	xyz(2.0455, 1.6430, 6.5114)
Luminance	0.0164 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F49 #494117

analogous

#173849 #171F49 #281749

triadic

#171F49 #49171F #1F4917

tetradic

#171F49 #491738 #494117 #174928

square

#171F49 #491738 #494117 #174928

split-complementary

#171F49 #492817 #384917

monochromatic

#070A17 #080B1A #171F49 #263378 #3447A6

Accessibility & contrast

On white

15.81

#171F49 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#171F49 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F49

15.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F49	#FFFFFF	#000000	##FFFFFF
##171F49	1.00	15.81	1.33	15.81
#FFFFFF	15.81	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#07254A

Deuteranopia (green-blind)

#002048

Tritanopia (blue-blind)

#002930

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171f49;
/* rgb */ color: rgb(23, 31, 73);
/* oklch */ color: oklch(25.9% 0.078 271.7);

Tailwind

colors: {
  custom: {
    50: '#5a5a7c',
    500: '#171f49',
    950: '#000000',
  },
}

SCSS

$custom: #171f49;
$custom-light: #5a5a7c;
$custom-dark: #000000;

JSON

{
  "hex": "#171f49",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 73
  },
  "hsl": {
    "h": 230.4,
    "s": 52.083,
    "l": 18.824
  },
  "oklch": {
    "l": 0.25876,
    "c": 0.07847,
    "h": 271.7
  },
  "luminance": 0.01643
}

Semantic roles & 50–950 ramp

primary

#171F49

secondary

#80753C

accent

#C54CDC

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#040309

muted

#79787B

Preview Lab

Preview with #171F49

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

Preview Lab → · Contrast checker → · Palette generator →