#171D75#171D75

#171D75 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.9% C 0.146 H 270.7°. Best body text is #FFFFFF at 14.30:1 contrast (WCAG AA passes).

Color values

HEX	#171D75
RGB	rgb(23, 29, 117)
HSL	hsl(236, 67%, 27%)
HSV	hsv(236, 80%, 46%)
CMYK	cmyk(80.3%, 75.2%, 0%, 54.1%)
CIE-LAB	lab(17.20, 30.84, -50.59)
CIE-LCH	lch(17.20, 59.25, 301.37°)
OKLab	oklab(29.91% 0.0017 -0.1465)
OKLCH	oklch(29.91% 0.147 270.7)
XYZ	xyz(4.0025, 2.3448, 17.0678)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D75 #756F17

analogous

#174C75 #171D75 #401775

triadic

#171D75 #75171D #1D7517

tetradic

#171D75 #75174C #756F17 #177540

square

#171D75 #75174C #756F17 #177540

split-complementary

#171D75 #754017 #4C7517

monochromatic

#05061A #0D1042 #171D75 #212AA8 #303BD6

Accessibility & contrast

On white

14.30

#171D75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#171D75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D75

14.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D75	#FFFFFF	#000000	##FFFFFF
##171D75	1.00	14.30	1.47	14.30
#FFFFFF	14.30	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F78

Deuteranopia (green-blind)

#002673

Tritanopia (blue-blind)

#003647

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171d75;
/* rgb */ color: rgb(23, 29, 117);
/* oklch */ color: oklch(29.9% 0.146 270.7);

Tailwind

colors: {
  custom: {
    50: '#665a9e',
    500: '#171d75',
    950: '#000000',
  },
}

SCSS

$custom: #171d75;
$custom-light: #665a9e;
$custom-dark: #000000;

JSON

{
  "hex": "#171d75",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 117
  },
  "hsl": {
    "h": 236.17,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.29906,
    "c": 0.1465,
    "h": 270.7
  },
  "luminance": 0.02345
}

Semantic roles & 50–950 ramp

primary

#171D75

secondary

#AAA33D

accent

#DF3EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171D75

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

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