#172D84#172D84
#172D84 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.4% C 0.148 H 266.9°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).
Color values
| HEX | #172D84 |
|---|---|
| RGB | rgb(23, 45, 132) |
| HSL | hsl(228, 70%, 30%) |
| HSV | hsv(228, 83%, 52%) |
| CMYK | cmyk(82.6%, 65.9%, 0%, 48.2%) |
| CIE-LAB | lab(22.74, 25.89, -51.02) |
| CIE-LCH | lch(22.74, 57.22, 296.91°) |
| OKLab | oklab(34.4% -0.0081 -0.1477) |
| OKLCH | oklch(34.4% 0.148 266.9) |
| XYZ | xyz(5.4551, 3.7242, 22.2567) |
| Luminance | 0.0372 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 6.19
Midnight Blue
#191970
ΔE00 6.19
Royal
#0C1793
ΔE00 6.64
Marine
#042E60
ΔE00 6.98
Darkslateblue
#483D8B
ΔE00 7.65
Blueberry
#464196
ΔE00 7.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#172D84 #846E17
analogous
#176384 #172D84 #371784
triadic
#172D84 #84172D #2D8417
tetradic
#172D84 #841763 #846E17 #178437
square
#172D84 #841763 #846E17 #178437
split-complementary
#172D84 #843717 #638417
monochromatic
#05091C #0E1B50 #172D84 #203FB8 #395ADC
Accessibility & contrast
On white
12.03
#172D84 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.75
#172D84 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #172D84
12.03:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##172D84 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##172D84 | 1.00 | 12.03 | 1.75 | 12.03 |
| #FFFFFF | 12.03 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.75 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 12.03 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#003C87
Deuteranopia (green-blind)
#003182
Tritanopia (blue-blind)
#004454
Achromatopsia (no color)
#363636
Design tokens & code
CSS
--color: #172d84; /* rgb */ color: rgb(23, 45, 132); /* oklch */ color: oklch(34.4% 0.148 266.9);
Tailwind
colors: {
custom: {
50: '#6965a9',
500: '#172d84',
950: '#000000',
},
}SCSS
$custom: #172d84; $custom-light: #6965a9; $custom-dark: #000000;
JSON
{
"hex": "#172d84",
"rgb": {
"r": 23,
"g": 45,
"b": 132
},
"hsl": {
"h": 227.89,
"s": 70.323,
"l": 30.392
},
"oklch": {
"l": 0.34398,
"c": 0.14791,
"h": 266.9
},
"luminance": 0.03725
}Semantic roles & 50–950 ramp
primary
#172D84
secondary
#B8A03F
accent
#C93BED
background
#F6F6FA
surface
#ECEBF4
border
#C7C6CE
text
#070510
muted
#7A7A7F