#171D72#171D72

#171D72 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.6% C 0.142 H 270.9°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#171D72
RGB	rgb(23, 29, 114)
HSL	hsl(236, 66%, 27%)
HSV	hsv(236, 80%, 45%)
CMYK	cmyk(79.8%, 74.6%, 0%, 55.3%)
CIE-LAB	lab(16.87, 29.72, -49.20)
CIE-LCH	lch(16.87, 57.48, 301.13°)
OKLab	oklab(29.57% 0.0021 -0.1424)
OKLCH	oklch(29.57% 0.142 270.9)
XYZ	xyz(3.8289, 2.2754, 16.1537)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D72 #726C17

analogous

#174B72 #171D72 #3F1772

triadic

#171D72 #72171D #1D7217

tetradic

#171D72 #72174B #726C17 #17723F

square

#171D72 #72174B #726C17 #17723F

split-complementary

#171D72 #723F17 #4B7217

monochromatic

#050619 #0D103F #171D72 #212AA5 #2E39D5

Accessibility & contrast

On white

14.43

#171D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D72

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D72	#FFFFFF	#000000	##FFFFFF
##171D72	1.00	14.43	1.46	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E75

Deuteranopia (green-blind)

#002570

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171d72;
/* rgb */ color: rgb(23, 29, 114);
/* oklch */ color: oklch(29.6% 0.142 270.9);

Tailwind

colors: {
  custom: {
    50: '#65599c',
    500: '#171d72',
    950: '#000000',
  },
}

SCSS

$custom: #171d72;
$custom-light: #65599c;
$custom-dark: #000000;

JSON

{
  "hex": "#171d72",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 114
  },
  "hsl": {
    "h": 236.044,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.29569,
    "c": 0.14247,
    "h": 270.9
  },
  "luminance": 0.02276
}

Semantic roles & 50–950 ramp

primary

#171D72

secondary

#A8A13D

accent

#DE3EE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171D72

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

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