#171C70#171C70

#171C70 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.141 H 271.2°. Best body text is #FFFFFF at 14.62:1 contrast (WCAG AA passes).

Color values

HEX	#171C70
RGB	rgb(23, 28, 112)
HSL	hsl(237, 66%, 26%)
HSV	hsv(237, 79%, 44%)
CMYK	cmyk(79.5%, 75%, 0%, 56.1%)
CIE-LAB	lab(16.42, 29.62, -48.66)
CIE-LCH	lch(16.42, 56.96, 301.33°)
OKLab	oklab(29.18% 0.003 -0.1409)
OKLCH	oklch(29.18% 0.141 271.2)
XYZ	xyz(3.6922, 2.1821, 15.5527)
Luminance	0.0218 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C70 #706B17

analogous

#174970 #171C70 #3F1770

triadic

#171C70 #70171C #1C7017

tetradic

#171C70 #701749 #706B17 #17703F

square

#171C70 #701749 #706B17 #17703F

split-complementary

#171C70 #703F17 #497017

monochromatic

#050619 #0D0F3D #171C70 #2129A3 #2D37D4

Accessibility & contrast

On white

14.62

#171C70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171C70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C70

14.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C70	#FFFFFF	#000000	##FFFFFF
##171C70	1.00	14.62	1.44	14.62
#FFFFFF	14.62	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D73

Deuteranopia (green-blind)

#00246E

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171c70;
/* rgb */ color: rgb(23, 28, 112);
/* oklch */ color: oklch(29.2% 0.141 271.2);

Tailwind

colors: {
  custom: {
    50: '#65599a',
    500: '#171c70',
    950: '#000000',
  },
}

SCSS

$custom: #171c70;
$custom-light: #65599a;
$custom-dark: #000000;

JSON

{
  "hex": "#171c70",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 112
  },
  "hsl": {
    "h": 236.629,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29177,
    "c": 0.14089,
    "h": 271.2
  },
  "luminance": 0.02183
}

Semantic roles & 50–950 ramp

primary

#171C70

secondary

#A6A03D

accent

#DF3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171C70

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

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