#171C7A#171C7A

#171C7A is a dark, vivid blue. Relative luminance 0.024; OKLCH L 30.3% C 0.154 H 270.5°. Best body text is #FFFFFF at 14.15:1 contrast (WCAG AA passes).

Color values

HEX	#171C7A
RGB	rgb(23, 28, 122)
HSL	hsl(237, 68%, 28%)
HSV	hsv(237, 81%, 48%)
CMYK	cmyk(81.1%, 77%, 0%, 52.2%)
CIE-LAB	lab(17.54, 33.32, -53.24)
CIE-LCH	lch(17.54, 62.81, 302.04°)
OKLab	oklab(30.32% 0.0013 -0.1542)
OKLCH	oklch(30.32% 0.154 270.5)
XYZ	xyz(4.2803, 2.4173, 18.6496)
Luminance	0.0242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C7A #7A7517

analogous

#174D7A #171C7A #43177A

triadic

#171C7A #7A171C #1C7A17

tetradic

#171C7A #7A174D #7A7517 #177A43

square

#171C7A #7A174D #7A7517 #177A43

split-complementary

#171C7A #7A4317 #4D7A17

monochromatic

#05061A #0D1047 #171C7A #2128AD #333BD9

Accessibility & contrast

On white

14.15

#171C7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.48

#171C7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C7A

14.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C7A	#FFFFFF	#000000	##FFFFFF
##171C7A	1.00	14.15	1.48	14.15
#FFFFFF	14.15	1.00	21.00	1.00
#000000	1.48	21.00	1.00	21.00
##FFFFFF	14.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307D

Deuteranopia (green-blind)

#002678

Tritanopia (blue-blind)

#003749

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #171c7a;
/* rgb */ color: rgb(23, 28, 122);
/* oklch */ color: oklch(30.3% 0.154 270.5);

Tailwind

colors: {
  custom: {
    50: '#6859a2',
    500: '#171c7a',
    950: '#000000',
  },
}

SCSS

$custom: #171c7a;
$custom-light: #6859a2;
$custom-dark: #000000;

JSON

{
  "hex": "#171c7a",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 122
  },
  "hsl": {
    "h": 236.97,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30315,
    "c": 0.1542,
    "h": 270.5
  },
  "luminance": 0.02418
}

Semantic roles & 50–950 ramp

primary

#171C7A

secondary

#AFA93E

accent

#E23DEB

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171C7A

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

Preview Lab → · Contrast checker → · Palette generator →