#171C75#171C75

#171C75 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.148 H 270.8°. Best body text is #FFFFFF at 14.39:1 contrast (WCAG AA passes).

Color values

HEX	#171C75
RGB	rgb(23, 28, 117)
HSL	hsl(237, 67%, 27%)
HSV	hsv(237, 80%, 46%)
CMYK	cmyk(80.3%, 76.1%, 0%, 54.1%)
CIE-LAB	lab(16.97, 31.48, -50.97)
CIE-LCH	lch(16.97, 59.91, 301.70°)
OKLab	oklab(29.74% 0.0022 -0.1476)
OKLCH	oklch(29.74% 0.148 270.8)
XYZ	xyz(3.9784, 2.2966, 17.0598)
Luminance	0.0230 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C75 #757017

analogous

#174B75 #171C75 #411775

triadic

#171C75 #75171C #1C7517

tetradic

#171C75 #75174B #757017 #177541

square

#171C75 #75174B #757017 #177541

split-complementary

#171C75 #754117 #4B7517

monochromatic

#05061A #0D1042 #171C75 #2128A8 #3039D6

Accessibility & contrast

On white

14.39

#171C75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171C75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C75

14.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C75	#FFFFFF	#000000	##FFFFFF
##171C75	1.00	14.39	1.46	14.39
#FFFFFF	14.39	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E78

Deuteranopia (green-blind)

#002573

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171c75;
/* rgb */ color: rgb(23, 28, 117);
/* oklch */ color: oklch(29.7% 0.148 270.8);

Tailwind

colors: {
  custom: {
    50: '#66599e',
    500: '#171c75',
    950: '#000000',
  },
}

SCSS

$custom: #171c75;
$custom-light: #66599e;
$custom-dark: #000000;

JSON

{
  "hex": "#171c75",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 117
  },
  "hsl": {
    "h": 236.809,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29742,
    "c": 0.14761,
    "h": 270.8
  },
  "luminance": 0.02297
}

Semantic roles & 50–950 ramp

primary

#171C75

secondary

#AAA53D

accent

#E13EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171C75

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

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