#172171#172171

#172171 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.2% C 0.136 H 270.0°. Best body text is #FFFFFF at 14.07:1 contrast (WCAG AA passes).

Color values

HEX	#172171
RGB	rgb(23, 33, 113)
HSL	hsl(233, 66%, 27%)
HSV	hsv(233, 80%, 44%)
CMYK	cmyk(79.6%, 70.8%, 0%, 55.7%)
CIE-LAB	lab(17.74, 26.66, -47.12)
CIE-LCH	lch(17.74, 54.14, 299.50°)
OKLab	oklab(30.17% 0 -0.1364)
OKLCH	oklch(30.17% 0.136 270)
XYZ	xyz(3.8768, 2.4617, 15.8904)
Luminance	0.0246 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172171 #716717

analogous

#174E71 #172171 #3A1771

triadic

#172171 #711721 #217117

tetradic

#172171 #71174E #716717 #17713A

square

#172171 #71174E #716717 #17713A

split-complementary

#172171 #713A17 #4E7117

monochromatic

#050719 #0D123E #172171 #2130A4 #2E40D4

Accessibility & contrast

On white

14.07

#172171 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#172171 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172171

14.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172171	#FFFFFF	#000000	##FFFFFF
##172171	1.00	14.07	1.49	14.07
#FFFFFF	14.07	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003073

Deuteranopia (green-blind)

#002770

Tritanopia (blue-blind)

#003746

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #172171;
/* rgb */ color: rgb(23, 33, 113);
/* oklch */ color: oklch(30.2% 0.136 270.0);

Tailwind

colors: {
  custom: {
    50: '#655c9b',
    500: '#172171',
    950: '#000000',
  },
}

SCSS

$custom: #172171;
$custom-light: #655c9b;
$custom-dark: #000000;

JSON

{
  "hex": "#172171",
  "rgb": {
    "r": 23,
    "g": 33,
    "b": 113
  },
  "hsl": {
    "h": 233.333,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.30168,
    "c": 0.13636,
    "h": 270
  },
  "luminance": 0.02462
}

Semantic roles & 50–950 ramp

primary

#172171

secondary

#A79B3D

accent

#D63FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #172171

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

Preview Lab → · Contrast checker → · Palette generator →