#172D71#172D71

#172D71 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.6% C 0.121 H 266.1°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX	#172D71
RGB	rgb(23, 45, 113)
HSL	hsl(225, 66%, 27%)
HSV	hsv(225, 80%, 44%)
CMYK	cmyk(79.6%, 60.2%, 0%, 55.7%)
CIE-LAB	lab(21.02, 18.19, -41.76)
CIE-LCH	lch(21.02, 45.55, 293.54°)
OKLab	oklab(32.59% -0.0082 -0.1205)
OKLCH	oklch(32.59% 0.121 266.1)
XYZ	xyz(4.2713, 3.2507, 16.0219)
Luminance	0.0325 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D71 #715B17

analogous

#175A71 #172D71 #2E1771

triadic

#172D71 #71172D #2D7117

tetradic

#172D71 #71175A #715B17 #17712E

square

#172D71 #71175A #715B17 #17712E

split-complementary

#172D71 #712E17 #5A7117

monochromatic

#050A19 #0D193E #172D71 #2141A4 #2E57D4

Accessibility & contrast

On white

12.73

#172D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#172D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D71

12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D71	#FFFFFF	#000000	##FFFFFF
##172D71	1.00	12.73	1.65	12.73
#FFFFFF	12.73	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003773

Deuteranopia (green-blind)

#002F70

Tritanopia (blue-blind)

#003E4A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172d71;
/* rgb */ color: rgb(23, 45, 113);
/* oklch */ color: oklch(32.6% 0.121 266.1);

Tailwind

colors: {
  custom: {
    50: '#63659a',
    500: '#172d71',
    950: '#000000',
  },
}

SCSS

$custom: #172d71;
$custom-light: #63659a;
$custom-dark: #000000;

JSON

{
  "hex": "#172d71",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 113
  },
  "hsl": {
    "h": 225.333,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.32589,
    "c": 0.12081,
    "h": 266.1
  },
  "luminance": 0.03251
}

Semantic roles & 50–950 ramp

primary

#172D71

secondary

#A78D3D

accent

#BF3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172D71

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

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