#172F75#172F75

#172F75 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.4% C 0.124 H 265.6°. Best body text is #FFFFFF at 12.35:1 contrast (WCAG AA passes).

Color values

HEX	#172F75
RGB	rgb(23, 47, 117)
HSL	hsl(225, 67%, 27%)
HSV	hsv(225, 80%, 46%)
CMYK	cmyk(80.3%, 59.8%, 0%, 54.1%)
CIE-LAB	lab(21.94, 18.40, -42.83)
CIE-LCH	lch(21.94, 46.61, 293.26°)
OKLab	oklab(33.39% -0.0095 -0.1236)
OKLCH	oklch(33.39% 0.124 265.6)
XYZ	xyz(4.5796, 3.4990, 17.2602)
Luminance	0.0350 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F75 #755D17

analogous

#175E75 #172F75 #2E1775

triadic

#172F75 #75172F #2F7517

tetradic

#172F75 #75175E #755D17 #17752E

square

#172F75 #75175E #755D17 #17752E

split-complementary

#172F75 #752E17 #5E7517

monochromatic

#050A1A #0D1A42 #172F75 #2144A8 #305BD6

Accessibility & contrast

On white

12.35

#172F75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#172F75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F75

12.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F75	#FFFFFF	#000000	##FFFFFF
##172F75	1.00	12.35	1.70	12.35
#FFFFFF	12.35	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003977

Deuteranopia (green-blind)

#003074

Tritanopia (blue-blind)

#00404D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172f75;
/* rgb */ color: rgb(23, 47, 117);
/* oklch */ color: oklch(33.4% 0.124 265.6);

Tailwind

colors: {
  custom: {
    50: '#64679d',
    500: '#172f75',
    950: '#000000',
  },
}

SCSS

$custom: #172f75;
$custom-light: #64679d;
$custom-dark: #000000;

JSON

{
  "hex": "#172f75",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 117
  },
  "hsl": {
    "h": 224.681,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.33386,
    "c": 0.124,
    "h": 265.6
  },
  "luminance": 0.035
}

Semantic roles & 50–950 ramp

primary

#172F75

secondary

#AA8F3D

accent

#BE3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #172F75

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

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