#171D80#171D80

#171D80 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.2% C 0.161 H 270.0°. Best body text is #FFFFFF at 13.78:1 contrast (WCAG AA passes).

Color values

HEX	#171D80
RGB	rgb(23, 29, 128)
HSL	hsl(237, 70%, 30%)
HSV	hsv(237, 82%, 50%)
CMYK	cmyk(82%, 77.3%, 0%, 49.8%)
CIE-LAB	lab(18.45, 34.88, -55.56)
CIE-LCH	lch(18.45, 65.60, 302.12°)
OKLab	oklab(31.16% -0.0001 -0.1609)
OKLCH	oklch(31.16% 0.161 270)
XYZ	xyz(4.6877, 2.6189, 20.6763)
Luminance	0.0262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D80 #807A17

analogous

#175280 #171D80 #451780

triadic

#171D80 #80171D #1D8017

tetradic

#171D80 #801752 #807A17 #178045

square

#171D80 #801752 #807A17 #178045

split-complementary

#171D80 #804517 #528017

monochromatic

#05061A #0E114C #171D80 #2029B4 #3640DB

Accessibility & contrast

On white

13.78

#171D80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#171D80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D80

13.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D80	#FFFFFF	#000000	##FFFFFF
##171D80	1.00	13.78	1.52	13.78
#FFFFFF	13.78	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003283

Deuteranopia (green-blind)

#00287E

Tritanopia (blue-blind)

#003A4D

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #171d80;
/* rgb */ color: rgb(23, 29, 128);
/* oklch */ color: oklch(31.2% 0.161 270.0);

Tailwind

colors: {
  custom: {
    50: '#695aa6',
    500: '#171d80',
    950: '#000000',
  },
}

SCSS

$custom: #171d80;
$custom-light: #695aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#171d80",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 128
  },
  "hsl": {
    "h": 236.571,
    "s": 69.536,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31164,
    "c": 0.16095,
    "h": 270
  },
  "luminance": 0.02619
}

Semantic roles & 50–950 ramp

primary

#171D80

secondary

#B4AE3E

accent

#E23BEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#08040F

muted

#7A797F

Preview Lab

Preview with #171D80

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

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