#171E88#171E88

#171E88 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.170 H 269.4°. Best body text is #FFFFFF at 13.31:1 contrast (WCAG AA passes).

Color values

HEX	#171E88
RGB	rgb(23, 30, 136)
HSL	hsl(236, 71%, 31%)
HSV	hsv(236, 83%, 53%)
CMYK	cmyk(83.1%, 77.9%, 0%, 46.7%)
CIE-LAB	lab(19.59, 37.14, -58.72)
CIE-LCH	lch(19.59, 69.48, 302.31°)
OKLab	oklab(32.25% -0.0017 -0.1701)
OKLCH	oklch(32.25% 0.17 269.4)
XYZ	xyz(5.2600, 2.8877, 23.5679)
Luminance	0.0289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E88 #888117

analogous

#175688 #171E88 #481788

triadic

#171E88 #88171E #1E8817

tetradic

#171E88 #881756 #888117 #178848

square

#171E88 #881756 #888117 #178848

split-complementary

#171E88 #884817 #568817

monochromatic

#05071F #0E1254 #171E88 #202ABC #3B46DE

Accessibility & contrast

On white

13.31

#171E88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#171E88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E88

13.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E88	#FFFFFF	#000000	##FFFFFF
##171E88	1.00	13.31	1.58	13.31
#FFFFFF	13.31	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00358B

Deuteranopia (green-blind)

#002A86

Tritanopia (blue-blind)

#003E52

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #171e88;
/* rgb */ color: rgb(23, 30, 136);
/* oklch */ color: oklch(32.2% 0.170 269.4);

Tailwind

colors: {
  custom: {
    50: '#6b5bac',
    500: '#171e88',
    950: '#000000',
  },
}

SCSS

$custom: #171e88;
$custom-light: #6b5bac;
$custom-dark: #000000;

JSON

{
  "hex": "#171e88",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 136
  },
  "hsl": {
    "h": 236.283,
    "s": 71.069,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32246,
    "c": 0.17014,
    "h": 269.4
  },
  "luminance": 0.02888
}

Semantic roles & 50–950 ramp

primary

#171E88

secondary

#BCB43F

accent

#E33AEE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171E88

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

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