#172C7D#172C7D

#172C7D is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.5% C 0.139 H 267.0°. Best body text is #FFFFFF at 12.41:1 contrast (WCAG AA passes).

Color values

HEX	#172C7D
RGB	rgb(23, 44, 125)
HSL	hsl(228, 69%, 29%)
HSV	hsv(228, 82%, 49%)
CMYK	cmyk(81.6%, 64.8%, 0%, 51%)
CIE-LAB	lab(21.81, 23.79, -48.13)
CIE-LCH	lch(21.81, 53.69, 296.31°)
OKLab	oklab(33.51% -0.0073 -0.1392)
OKLCH	oklch(33.51% 0.139 267)
XYZ	xyz(4.9544, 3.4636, 19.8055)
Luminance	0.0346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C7D #7D6817

analogous

#175F7D #172C7D #35177D

triadic

#172C7D #7D172C #2C7D17

tetradic

#172C7D #7D175F #7D6817 #177D35

square

#172C7D #7D175F #7D6817 #177D35

split-complementary

#172C7D #7D3517 #5F7D17

monochromatic

#05091A #0D1A49 #172C7D #213EB1 #3557DA

Accessibility & contrast

On white

12.41

#172C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#172C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C7D

12.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C7D	#FFFFFF	#000000	##FFFFFF
##172C7D	1.00	12.41	1.69	12.41
#FFFFFF	12.41	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003980

Deuteranopia (green-blind)

#00307B

Tritanopia (blue-blind)

#004150

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172c7d;
/* rgb */ color: rgb(23, 44, 125);
/* oklch */ color: oklch(33.5% 0.139 267.0);

Tailwind

colors: {
  custom: {
    50: '#6764a3',
    500: '#172c7d',
    950: '#000000',
  },
}

SCSS

$custom: #172c7d;
$custom-light: #6764a3;
$custom-dark: #000000;

JSON

{
  "hex": "#172c7d",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 125
  },
  "hsl": {
    "h": 227.647,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.33512,
    "c": 0.13941,
    "h": 267
  },
  "luminance": 0.03464
}

Semantic roles & 50–950 ramp

primary

#172C7D

secondary

#B29A3E

accent

#C83CEC

background

#F6F6FA

surface

#EBEBF4

border

#C6C6CE

text

#07050F

muted

#7A7A7F

Preview Lab

Preview with #172C7D

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

Preview Lab → · Contrast checker → · Palette generator →