#171E72#171E72

#171E72 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.141 H 270.7°. Best body text is #FFFFFF at 14.33:1 contrast (WCAG AA passes).

Color values

HEX	#171E72
RGB	rgb(23, 30, 114)
HSL	hsl(235, 66%, 27%)
HSV	hsv(235, 80%, 45%)
CMYK	cmyk(79.8%, 73.7%, 0%, 55.3%)
CIE-LAB	lab(17.11, 29.06, -48.81)
CIE-LCH	lch(17.11, 56.81, 300.77°)
OKLab	oklab(29.74% 0.0016 -0.1413)
OKLCH	oklch(29.74% 0.141 270.7)
XYZ	xyz(3.8539, 2.3252, 16.1620)
Luminance	0.0233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E72 #726B17

analogous

#174C72 #171E72 #3E1772

triadic

#171E72 #72171E #1E7217

tetradic

#171E72 #72174C #726B17 #17723E

square

#171E72 #72174C #726B17 #17723E

split-complementary

#171E72 #723E17 #4C7217

monochromatic

#050719 #0D113F #171E72 #212BA5 #2E3BD5

Accessibility & contrast

On white

14.33

#171E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#171E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E72

14.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E72	#FFFFFF	#000000	##FFFFFF
##171E72	1.00	14.33	1.47	14.33
#FFFFFF	14.33	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F75

Deuteranopia (green-blind)

#002670

Tritanopia (blue-blind)

#003645

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171e72;
/* rgb */ color: rgb(23, 30, 114);
/* oklch */ color: oklch(29.7% 0.141 270.7);

Tailwind

colors: {
  custom: {
    50: '#655a9b',
    500: '#171e72',
    950: '#000000',
  },
}

SCSS

$custom: #171e72;
$custom-light: #655a9b;
$custom-dark: #000000;

JSON

{
  "hex": "#171e72",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 114
  },
  "hsl": {
    "h": 235.385,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.2974,
    "c": 0.14131,
    "h": 270.7
  },
  "luminance": 0.02326
}

Semantic roles & 50–950 ramp

primary

#171E72

secondary

#A89F3D

accent

#DC3EE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #171E72

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

Preview Lab → · Contrast checker → · Palette generator →