#171A4F#171A4F

#171A4F is a dark, moderate blue. Relative luminance 0.015; OKLCH L 25.3% C 0.096 H 274.8°. Best body text is #FFFFFF at 16.19:1 contrast (WCAG AA passes).

Color values

HEX	#171A4F
RGB	rgb(23, 26, 79)
HSL	hsl(237, 55%, 20%)
HSV	hsv(237, 71%, 31%)
CMYK	cmyk(70.9%, 67.1%, 0%, 69%)
CIE-LAB	lab(12.51, 18.14, -33.08)
CIE-LCH	lch(12.51, 37.72, 298.74°)
OKLab	oklab(25.31% 0.008 -0.0953)
OKLCH	oklch(25.31% 0.096 274.8)
XYZ	xyz(2.1336, 1.4853, 7.5699)
Luminance	0.0149 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.22

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A4F #4F4C17

analogous

#17364F #171A4F #30174F

triadic

#171A4F #4F171A #1A4F17

tetradic

#171A4F #4F1736 #4F4C17 #174F30

square

#171A4F #4F1736 #4F4C17 #174F30

split-complementary

#171A4F #4F3017 #364F17

monochromatic

#070818 #090A20 #171A4F #252A7E #3339AE

Accessibility & contrast

On white

16.19

#171A4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.30

#171A4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A4F

16.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A4F	#FFFFFF	#000000	##FFFFFF
##171A4F	1.00	16.19	1.30	16.19
#FFFFFF	16.19	1.00	21.00	1.00
#000000	1.30	21.00	1.00	21.00
##FFFFFF	16.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002351

Deuteranopia (green-blind)

#001E4E

Tritanopia (blue-blind)

#002731

Achromatopsia (no color)

#212121

Design tokens & code

CSS

--color: #171a4f;
/* rgb */ color: rgb(23, 26, 79);
/* oklch */ color: oklch(25.3% 0.096 274.8);

Tailwind

colors: {
  custom: {
    50: '#5c5681',
    500: '#171a4f',
    950: '#000000',
  },
}

SCSS

$custom: #171a4f;
$custom-light: #5c5681;
$custom-dark: #000000;

JSON

{
  "hex": "#171a4f",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 79
  },
  "hsl": {
    "h": 236.786,
    "s": 54.902,
    "l": 20
  },
  "oklch": {
    "l": 0.25311,
    "c": 0.09561,
    "h": 274.8
  },
  "luminance": 0.01485
}

Semantic roles & 50–950 ramp

primary

#171A4F

secondary

#86823C

accent

#D64ADE

background

#F5F5F7

surface

#E9E9EE

border

#C5C5C9

text

#04030A

muted

#79787C

Preview Lab

Preview with #171A4F

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

Preview Lab → · Contrast checker → · Palette generator →