#171D7A#171D7A

#171D7A is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.153 H 270.3°. Best body text is #FFFFFF at 14.06:1 contrast (WCAG AA passes).

Color values

HEX	#171D7A
RGB	rgb(23, 29, 122)
HSL	hsl(236, 68%, 28%)
HSV	hsv(236, 81%, 48%)
CMYK	cmyk(81.1%, 76.2%, 0%, 52.2%)
CIE-LAB	lab(17.76, 32.70, -52.88)
CIE-LCH	lch(17.76, 62.17, 301.73°)
OKLab	oklab(30.47% 0.0009 -0.1531)
OKLCH	oklch(30.47% 0.153 270.3)
XYZ	xyz(4.3044, 2.4655, 18.6576)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D7A #7A7417

analogous

#174E7A #171D7A #42177A

triadic

#171D7A #7A171D #1D7A17

tetradic

#171D7A #7A174E #7A7417 #177A42

square

#171D7A #7A174E #7A7417 #177A42

split-complementary

#171D7A #7A4217 #4E7A17

monochromatic

#05061A #0D1147 #171D7A #2129AD #333DD9

Accessibility & contrast

On white

14.06

#171D7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#171D7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D7A

14.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D7A	#FFFFFF	#000000	##FFFFFF
##171D7A	1.00	14.06	1.49	14.06
#FFFFFF	14.06	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307D

Deuteranopia (green-blind)

#002778

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #171d7a;
/* rgb */ color: rgb(23, 29, 122);
/* oklch */ color: oklch(30.5% 0.153 270.3);

Tailwind

colors: {
  custom: {
    50: '#685aa2',
    500: '#171d7a',
    950: '#000000',
  },
}

SCSS

$custom: #171d7a;
$custom-light: #685aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#171d7a",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 122
  },
  "hsl": {
    "h": 236.364,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30473,
    "c": 0.15314,
    "h": 270.3
  },
  "luminance": 0.02466
}

Semantic roles & 50–950 ramp

primary

#171D7A

secondary

#AFA83E

accent

#E13DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #171D7A

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

Preview Lab → · Contrast checker → · Palette generator →