#172F6C#172F6C

#172F6C is a dark, moderate blue. Relative luminance 0.033; OKLCH L 32.6% C 0.111 H 264.7°. Best body text is #FFFFFF at 12.65:1 contrast (WCAG AA passes).

Color values

HEX	#172F6C
RGB	rgb(23, 47, 108)
HSL	hsl(223, 65%, 26%)
HSV	hsv(223, 79%, 42%)
CMYK	cmyk(78.7%, 56.5%, 0%, 57.6%)
CIE-LAB	lab(21.20, 14.67, -38.25)
CIE-LCH	lch(21.20, 40.96, 290.99°)
OKLab	oklab(32.59% -0.0102 -0.1102)
OKLCH	oklch(32.59% 0.111 264.7)
XYZ	xyz(4.0757, 3.2975, 14.6061)
Luminance	0.0330 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F6C #6C5417

analogous

#17596C #172F6C #29176C

triadic

#172F6C #6C172F #2F6C17

tetradic

#172F6C #6C1759 #6C5417 #176C29

square

#172F6C #6C1759 #6C5417 #176C29

split-complementary

#172F6C #6C2917 #596C17

monochromatic

#050B19 #0C193A #172F6C #22459E #2C5BD1

Accessibility & contrast

On white

12.65

#172F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#172F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F6C

12.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F6C	#FFFFFF	#000000	##FFFFFF
##172F6C	1.00	12.65	1.66	12.65
#FFFFFF	12.65	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#02376E

Deuteranopia (green-blind)

#002F6B

Tritanopia (blue-blind)

#003E48

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172f6c;
/* rgb */ color: rgb(23, 47, 108);
/* oklch */ color: oklch(32.6% 0.111 264.7);

Tailwind

colors: {
  custom: {
    50: '#626797',
    500: '#172f6c',
    950: '#000000',
  },
}

SCSS

$custom: #172f6c;
$custom-light: #626797;
$custom-dark: #000000;

JSON

{
  "hex": "#172f6c",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 108
  },
  "hsl": {
    "h": 223.059,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.32592,
    "c": 0.11064,
    "h": 264.7
  },
  "luminance": 0.03298
}

Semantic roles & 50–950 ramp

primary

#172F6C

secondary

#A2853D

accent

#B840E8

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #172F6C

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

Preview Lab → · Contrast checker → · Palette generator →