#171850#171850

#171850 is a dark, moderate blue. Relative luminance 0.014; OKLCH L 25.0% C 0.100 H 275.6°. Best body text is #FFFFFF at 16.37:1 contrast (WCAG AA passes).

Color values

HEX	#171850
RGB	rgb(23, 24, 80)
HSL	hsl(239, 55%, 20%)
HSV	hsv(239, 71%, 31%)
CMYK	cmyk(71.2%, 70%, 0%, 68.6%)
CIE-LAB	lab(12.05, 19.99, -34.51)
CIE-LCH	lch(12.05, 39.89, 300.08°)
OKLab	oklab(25% 0.0098 -0.0995)
OKLCH	oklch(25% 0.1 275.6)
XYZ	xyz(2.1275, 1.4144, 7.7488)
Luminance	0.0141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.08

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171850 #504F17

analogous

#173550 #171850 #321750

triadic

#171850 #501718 #185017

tetradic

#171850 #501735 #504F17 #175032

square

#171850 #501735 #504F17 #175032

split-complementary

#171850 #503217 #355017

monochromatic

#070718 #090A20 #171850 #252680 #3235AF

Accessibility & contrast

On white

16.37

#171850 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#171850 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171850

16.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171850	#FFFFFF	#000000	##FFFFFF
##171850	1.00	16.37	1.28	16.37
#FFFFFF	16.37	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002252

Deuteranopia (green-blind)

#001D4F

Tritanopia (blue-blind)

#002631

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #171850;
/* rgb */ color: rgb(23, 24, 80);
/* oklch */ color: oklch(25.0% 0.100 275.6);

Tailwind

colors: {
  custom: {
    50: '#5d5582',
    500: '#171850',
    950: '#000000',
  },
}

SCSS

$custom: #171850;
$custom-light: #5d5582;
$custom-dark: #000000;

JSON

{
  "hex": "#171850",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 80
  },
  "hsl": {
    "h": 238.947,
    "s": 55.34,
    "l": 20.196
  },
  "oklch": {
    "l": 0.25002,
    "c": 0.09999,
    "h": 275.6
  },
  "luminance": 0.01415
}

Semantic roles & 50–950 ramp

primary

#171850

secondary

#87863C

accent

#DC49DF

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05030A

muted

#79787C

Preview Lab

Preview with #171850

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

Preview Lab → · Contrast checker → · Palette generator →