#171571#171571

#171571 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.150 H 272.3°. Best body text is #FFFFFF at 15.19:1 contrast (WCAG AA passes).

Color values

HEX	#171571
RGB	rgb(23, 21, 113)
HSL	hsl(241, 69%, 26%)
HSV	hsv(241, 81%, 44%)
CMYK	cmyk(79.6%, 81.4%, 0%, 55.7%)
CIE-LAB	lab(15.01, 34.27, -51.63)
CIE-LCH	lch(15.01, 61.97, 303.57°)
OKLab	oklab(28.21% 0.0059 -0.1494)
OKLCH	oklch(28.21% 0.15 272.3)
XYZ	xyz(3.6011, 1.9104, 15.7985)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171571 #6F7115

analogous

#154171 #171571 #451571

triadic

#171571 #711715 #157117

tetradic

#171571 #711541 #6F7115 #157145

square

#171571 #711541 #6F7115 #157145

split-complementary

#171571 #714515 #417115

monochromatic

#05051A #0C0B3D #171571 #221FA5 #2D29D7

Accessibility & contrast

On white

15.19

#171571 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#171571 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171571

15.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171571	#FFFFFF	#000000	##FFFFFF
##171571	1.00	15.19	1.38	15.19
#FFFFFF	15.19	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A74

Deuteranopia (green-blind)

#00216F

Tritanopia (blue-blind)

#003143

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171571;
/* rgb */ color: rgb(23, 21, 113);
/* oklch */ color: oklch(28.2% 0.150 272.3);

Tailwind

colors: {
  custom: {
    50: '#66549b',
    500: '#171571',
    950: '#000000',
  },
}

SCSS

$custom: #171571;
$custom-light: #66549b;
$custom-dark: #000000;

JSON

{
  "hex": "#171571",
  "rgb": {
    "r": 23,
    "g": 21,
    "b": 113
  },
  "hsl": {
    "h": 241.304,
    "s": 68.657,
    "l": 26.275
  },
  "oklch": {
    "l": 0.28214,
    "c": 0.14955,
    "h": 272.3
  },
  "luminance": 0.01911
}

Semantic roles & 50–950 ramp

primary

#171571

secondary

#A5A73B

accent

#EB3CE8

background

#F6F4F9

surface

#EBE8F2

border

#C6C4CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171571

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

Preview Lab → · Contrast checker → · Palette generator →