#172D7D#172D7D

#172D7D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.7% C 0.138 H 266.7°. Best body text is #FFFFFF at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#172D7D
RGB	rgb(23, 45, 125)
HSL	hsl(227, 69%, 29%)
HSV	hsv(227, 82%, 49%)
CMYK	cmyk(81.6%, 64%, 0%, 51%)
CIE-LAB	lab(22.08, 23.09, -47.68)
CIE-LCH	lch(22.08, 52.98, 295.84°)
OKLab	oklab(33.71% -0.0079 -0.1379)
OKLCH	oklch(33.71% 0.138 266.7)
XYZ	xyz(4.9921, 3.5390, 19.8181)
Luminance	0.0354 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D7D #7D6717

analogous

#17607D #172D7D #34177D

triadic

#172D7D #7D172D #2D7D17

tetradic

#172D7D #7D1760 #7D6717 #177D34

square

#172D7D #7D1760 #7D6717 #177D34

split-complementary

#172D7D #7D3417 #607D17

monochromatic

#05091A #0D1A49 #172D7D #2140B1 #3558DA

Accessibility & contrast

On white

12.30

#172D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#172D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D7D

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D7D	#FFFFFF	#000000	##FFFFFF
##172D7D	1.00	12.30	1.71	12.30
#FFFFFF	12.30	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A80

Deuteranopia (green-blind)

#00307B

Tritanopia (blue-blind)

#004250

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172d7d;
/* rgb */ color: rgb(23, 45, 125);
/* oklch */ color: oklch(33.7% 0.138 266.7);

Tailwind

colors: {
  custom: {
    50: '#6765a3',
    500: '#172d7d',
    950: '#000000',
  },
}

SCSS

$custom: #172d7d;
$custom-light: #6765a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172d7d",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 125
  },
  "hsl": {
    "h": 227.059,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33714,
    "c": 0.13813,
    "h": 266.7
  },
  "luminance": 0.0354
}

Semantic roles & 50–950 ramp

primary

#172D7D

secondary

#B2993E

accent

#C63CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172D7D

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

Preview Lab → · Contrast checker → · Palette generator →