#172B68#172B68

#172B68 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.3% C 0.110 H 266.3°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#172B68
RGB	rgb(23, 43, 104)
HSL	hsl(225, 64%, 25%)
HSV	hsv(225, 78%, 41%)
CMYK	cmyk(77.9%, 58.7%, 0%, 59.2%)
CIE-LAB	lab(19.68, 15.91, -38.12)
CIE-LCH	lch(19.68, 41.31, 292.65°)
OKLab	oklab(31.34% -0.0071 -0.1099)
OKLCH	oklch(31.34% 0.11 266.3)
XYZ	xyz(3.7150, 2.9090, 13.4597)
Luminance	0.0291 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B68 #685417

analogous

#175468 #172B68 #2B1768

triadic

#172B68 #68172B #2B6817

tetradic

#172B68 #681754 #685417 #17682B

square

#172B68 #681754 #685417 #17682B

split-complementary

#172B68 #682B17 #546817

monochromatic

#060A19 #0C1636 #172B68 #22409A #2D54CC

Accessibility & contrast

On white

13.28

#172B68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172B68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B68

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B68	#FFFFFF	#000000	##FFFFFF
##172B68	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336A

Deuteranopia (green-blind)

#002C67

Tritanopia (blue-blind)

#003A45

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172b68;
/* rgb */ color: rgb(23, 43, 104);
/* oklch */ color: oklch(31.3% 0.110 266.3);

Tailwind

colors: {
  custom: {
    50: '#616394',
    500: '#172b68',
    950: '#000000',
  },
}

SCSS

$custom: #172b68;
$custom-light: #616394;
$custom-dark: #000000;

JSON

{
  "hex": "#172b68",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 104
  },
  "hsl": {
    "h": 225.185,
    "s": 63.78,
    "l": 24.902
  },
  "oklch": {
    "l": 0.3134,
    "c": 0.1101,
    "h": 266.3
  },
  "luminance": 0.02909
}

Semantic roles & 50–950 ramp

primary

#172B68

secondary

#9E863D

accent

#BE41E7

background

#F6F5F9

surface

#EBEAF1

border

#C6C6CB

text

#06050D

muted

#7A797E

Preview Lab

Preview with #172B68

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

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