#171C90#171C90

#171C90 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.9% C 0.182 H 269.2°. Best body text is #FFFFFF at 13.08:1 contrast (WCAG AA passes).

Color values

HEX	#171C90
RGB	rgb(23, 28, 144)
HSL	hsl(238, 72%, 33%)
HSV	hsv(238, 84%, 56%)
CMYK	cmyk(84%, 80.6%, 0%, 43.5%)
CIE-LAB	lab(20.15, 41.06, -62.80)
CIE-LCH	lch(20.15, 75.03, 303.18°)
OKLab	oklab(32.92% -0.0026 -0.1819)
OKLCH	oklch(32.92% 0.182 269.2)
XYZ	xyz(5.8009, 3.0256, 26.6584)
Luminance	0.0303 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C90 #908B17

analogous

#175890 #171C90 #4F1790

triadic

#171C90 #90171C #1C9017

tetradic

#171C90 #901758 #908B17 #17904F

square

#171C90 #901758 #908B17 #17904F

split-complementary

#171C90 #904F17 #589017

monochromatic

#060726 #0F125B #171C90 #1F26C5 #4147E1

Accessibility & contrast

On white

13.08

#171C90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.61

#171C90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C90

13.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C90	#FFFFFF	#000000	##FFFFFF
##171C90	1.00	13.08	1.61	13.08
#FFFFFF	13.08	1.00	21.00	1.00
#000000	1.61	21.00	1.00	21.00
##FFFFFF	13.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003793

Deuteranopia (green-blind)

#002A8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #171c90;
/* rgb */ color: rgb(23, 28, 144);
/* oklch */ color: oklch(32.9% 0.182 269.2);

Tailwind

colors: {
  custom: {
    50: '#6e5bb2',
    500: '#171c90',
    950: '#000000',
  },
}

SCSS

$custom: #171c90;
$custom-light: #6e5bb2;
$custom-dark: #000000;

JSON

{
  "hex": "#171c90",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 144
  },
  "hsl": {
    "h": 237.521,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32917,
    "c": 0.18193,
    "h": 269.2
  },
  "luminance": 0.03026
}

Semantic roles & 50–950 ramp

primary

#171C90

secondary

#C1BC42

accent

#E839EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171C90

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

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