#171C74#171C74

#171C74 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.146 H 270.9°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#171C74
RGB	rgb(23, 28, 116)
HSL	hsl(237, 67%, 27%)
HSV	hsv(237, 80%, 45%)
CMYK	cmyk(80.2%, 75.9%, 0%, 54.5%)
CIE-LAB	lab(16.86, 31.11, -50.51)
CIE-LCH	lch(16.86, 59.32, 301.63°)
OKLab	oklab(29.63% 0.0023 -0.1462)
OKLCH	oklch(29.63% 0.146 270.9)
XYZ	xyz(3.9199, 2.2732, 16.7518)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C74 #746F17

analogous

#174B74 #171C74 #401774

triadic

#171C74 #74171C #1C7417

tetradic

#171C74 #74174B #746F17 #177440

square

#171C74 #74174B #746F17 #177440

split-complementary

#171C74 #744017 #4B7417

monochromatic

#05061A #0D1041 #171C74 #2128A7 #3038D6

Accessibility & contrast

On white

14.43

#171C74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171C74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C74

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C74	#FFFFFF	#000000	##FFFFFF
##171C74	1.00	14.43	1.45	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E77

Deuteranopia (green-blind)

#002572

Tritanopia (blue-blind)

#003546

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171c74;
/* rgb */ color: rgb(23, 28, 116);
/* oklch */ color: oklch(29.6% 0.146 270.9);

Tailwind

colors: {
  custom: {
    50: '#66599d',
    500: '#171c74',
    950: '#000000',
  },
}

SCSS

$custom: #171c74;
$custom-light: #66599d;
$custom-dark: #000000;

JSON

{
  "hex": "#171c74",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 116
  },
  "hsl": {
    "h": 236.774,
    "s": 66.906,
    "l": 27.255
  },
  "oklch": {
    "l": 0.29628,
    "c": 0.14627,
    "h": 270.9
  },
  "luminance": 0.02274
}

Semantic roles & 50–950 ramp

primary

#171C74

secondary

#A9A43D

accent

#E13EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171C74

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

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