#171A8C#171A8C

#171A8C is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.179 H 269.6°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#171A8C
RGB	rgb(23, 26, 140)
HSL	hsl(238, 72%, 32%)
HSV	hsv(238, 84%, 55%)
CMYK	cmyk(83.6%, 81.4%, 0%, 45.1%)
CIE-LAB	lab(19.28, 40.79, -61.74)
CIE-LCH	lch(19.28, 73.99, 303.45°)
OKLab	oklab(32.17% -0.0013 -0.1788)
OKLCH	oklch(32.17% 0.179 269.6)
XYZ	xyz(5.4548, 2.8138, 25.0615)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A8C #8C8917

analogous

#17548C #171A8C #4F178C

triadic

#171A8C #8C171A #1A8C17

tetradic

#171A8C #8C1754 #8C8917 #178C4F

square

#171A8C #8C1754 #8C8917 #178C4F

split-complementary

#171A8C #8C4F17 #548C17

monochromatic

#060623 #0E1057 #171A8C #2024C1 #3E42DF

Accessibility & contrast

On white

13.44

#171A8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#171A8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A8C

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A8C	#FFFFFF	#000000	##FFFFFF
##171A8C	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358F

Deuteranopia (green-blind)

#00298A

Tritanopia (blue-blind)

#003E53

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #171a8c;
/* rgb */ color: rgb(23, 26, 140);
/* oklch */ color: oklch(32.2% 0.179 269.6);

Tailwind

colors: {
  custom: {
    50: '#6d59af',
    500: '#171a8c',
    950: '#000000',
  },
}

SCSS

$custom: #171a8c;
$custom-light: #6d59af;
$custom-dark: #000000;

JSON

{
  "hex": "#171a8c",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 140
  },
  "hsl": {
    "h": 238.462,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.3217,
    "c": 0.17882,
    "h": 269.6
  },
  "luminance": 0.02814
}

Semantic roles & 50–950 ramp

primary

#171A8C

secondary

#BFBC3F

accent

#EA39EF

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080411

muted

#7B7980

Preview Lab

Preview with #171A8C

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

Preview Lab → · Contrast checker → · Palette generator →