#172F71#172F71

#172F71 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.0% C 0.118 H 265.3°. Best body text is #FFFFFF at 12.49:1 contrast (WCAG AA passes).

Color values

HEX	#172F71
RGB	rgb(23, 47, 113)
HSL	hsl(224, 66%, 27%)
HSV	hsv(224, 80%, 44%)
CMYK	cmyk(79.6%, 58.4%, 0%, 55.7%)
CIE-LAB	lab(21.61, 16.75, -40.81)
CIE-LCH	lch(21.61, 44.11, 292.31°)
OKLab	oklab(33.03% -0.0098 -0.1177)
OKLCH	oklch(33.03% 0.118 265.3)
XYZ	xyz(4.3494, 3.4070, 16.0480)
Luminance	0.0341 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F71 #715917

analogous

#175C71 #172F71 #2C1771

triadic

#172F71 #71172F #2F7117

tetradic

#172F71 #71175C #715917 #17712C

square

#172F71 #71175C #715917 #17712C

split-complementary

#172F71 #712C17 #5C7117

monochromatic

#050B19 #0D1A3E #172F71 #2144A4 #2E5AD4

Accessibility & contrast

On white

12.49

#172F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#172F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F71

12.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F71	#FFFFFF	#000000	##FFFFFF
##172F71	1.00	12.49	1.68	12.49
#FFFFFF	12.49	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003873

Deuteranopia (green-blind)

#003070

Tritanopia (blue-blind)

#003F4B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172f71;
/* rgb */ color: rgb(23, 47, 113);
/* oklch */ color: oklch(33.0% 0.118 265.3);

Tailwind

colors: {
  custom: {
    50: '#63679a',
    500: '#172f71',
    950: '#000000',
  },
}

SCSS

$custom: #172f71;
$custom-light: #63679a;
$custom-dark: #000000;

JSON

{
  "hex": "#172f71",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 113
  },
  "hsl": {
    "h": 224,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.33028,
    "c": 0.11811,
    "h": 265.3
  },
  "luminance": 0.03407
}

Semantic roles & 50–950 ramp

primary

#172F71

secondary

#A78B3D

accent

#BC3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #172F71

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

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