#171171#171171

#171171 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.153 H 272.8°. Best body text is #FFFFFF at 15.50:1 contrast (WCAG AA passes).

Color values

HEX	#171171
RGB	rgb(23, 17, 113)
HSL	hsl(244, 74%, 25%)
HSV	hsv(244, 85%, 44%)
CMYK	cmyk(79.6%, 85%, 0%, 55.7%)
CIE-LAB	lab(14.26, 36.45, -52.88)
CIE-LCH	lch(14.26, 64.22, 304.58°)
OKLab	oklab(27.69% 0.0074 -0.153)
OKLCH	oklch(27.69% 0.153 272.8)
XYZ	xyz(3.5334, 1.7749, 15.7760)
Luminance	0.0177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171171 #6B7111

analogous

#113B71 #171171 #471171

triadic

#171171 #711711 #117117

tetradic

#171171 #71113B #6B7111 #117147

square

#171171 #71113B #6B7111 #117147

split-complementary

#171171 #714711 #3B7111

monochromatic

#05041B #0C093C #171171 #2219A6 #2D21DB

Accessibility & contrast

On white

15.50

#171171 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171171 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171171

15.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171171	#FFFFFF	#000000	##FFFFFF
##171171	1.00	15.50	1.36	15.50
#FFFFFF	15.50	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002974

Deuteranopia (green-blind)

#001F6F

Tritanopia (blue-blind)

#002F42

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #171171;
/* rgb */ color: rgb(23, 17, 113);
/* oklch */ color: oklch(27.7% 0.153 272.8);

Tailwind

colors: {
  custom: {
    50: '#66529b',
    500: '#171171',
    950: '#000000',
  },
}

SCSS

$custom: #171171;
$custom-light: #66529b;
$custom-dark: #000000;

JSON

{
  "hex": "#171171",
  "rgb": {
    "r": 23,
    "g": 17,
    "b": 113
  },
  "hsl": {
    "h": 243.75,
    "s": 73.846,
    "l": 25.49
  },
  "oklch": {
    "l": 0.2769,
    "c": 0.15316,
    "h": 272.8
  },
  "luminance": 0.01775
}

Semantic roles & 50–950 ramp

primary

#171171

secondary

#A1A836

accent

#F137E5

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020E

muted

#7A787E

Preview Lab

Preview with #171171

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

Preview Lab → · Contrast checker → · Palette generator →