#171A8F#171A8F

#171A8F is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.5% C 0.182 H 269.4°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#171A8F
RGB	rgb(23, 26, 143)
HSL	hsl(239, 72%, 33%)
HSV	hsv(239, 84%, 56%)
CMYK	cmyk(83.9%, 81.8%, 0%, 43.9%)
CIE-LAB	lab(19.65, 41.79, -62.99)
CIE-LCH	lch(19.65, 75.60, 303.56°)
OKLab	oklab(32.54% -0.0019 -0.1824)
OKLCH	oklch(32.54% 0.182 269.4)
XYZ	xyz(5.6790, 2.9034, 26.2424)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A8F #8F8C17

analogous

#17568F #171A8F #50178F

triadic

#171A8F #8F171A #1A8F17

tetradic

#171A8F #8F1756 #8F8C17 #178F50

square

#171A8F #8F1756 #8F8C17 #178F50

split-complementary

#171A8F #8F5017 #568F17

monochromatic

#060726 #0F105A #171A8F #1F24C4 #4044E0

Accessibility & contrast

On white

13.28

#171A8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#171A8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A8F

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A8F	#FFFFFF	#000000	##FFFFFF
##171A8F	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003692

Deuteranopia (green-blind)

#00298D

Tritanopia (blue-blind)

#003F55

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #171a8f;
/* rgb */ color: rgb(23, 26, 143);
/* oklch */ color: oklch(32.5% 0.182 269.4);

Tailwind

colors: {
  custom: {
    50: '#6e59b1',
    500: '#171a8f',
    950: '#000000',
  },
}

SCSS

$custom: #171a8f;
$custom-light: #6e59b1;
$custom-dark: #000000;

JSON

{
  "hex": "#171a8f",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 143
  },
  "hsl": {
    "h": 238.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.32536,
    "c": 0.18245,
    "h": 269.4
  },
  "luminance": 0.02904
}

Semantic roles & 50–950 ramp

primary

#171A8F

secondary

#C1BE41

accent

#EA39EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171A8F

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

Preview Lab → · Contrast checker → · Palette generator →