#173880#173880
#173880 is a dark, vivid blue. Relative luminance 0.046; OKLCH L 36.3% C 0.128 H 263.0°. Best body text is #FFFFFF at 10.97:1 contrast (WCAG AA passes).
Color values
| HEX | #173880 |
|---|---|
| RGB | rgb(23, 56, 128) |
| HSL | hsl(221, 70%, 30%) |
| HSV | hsv(221, 82%, 50%) |
| CMYK | cmyk(82%, 56.3%, 0%, 49.8%) |
| CIE-LAB | lab(25.47, 16.54, -44.06) |
| CIE-LCH | lch(25.47, 47.06, 290.57°) |
| OKLab | oklab(36.33% -0.0155 -0.1271) |
| OKLCH | oklch(36.33% 0.128 263) |
| XYZ | xyz(5.6624, 4.5684, 21.0012) |
| Luminance | 0.0457 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Darkish Blue
#014182
ΔE00 4.33
Marine Blue
#01386A
ΔE00 4.65
Cobalt (survey)
#1E488F
ΔE00 5.34
Twilight Blue
#0A437A
ΔE00 5.35
Marine
#042E60
ΔE00 5.40
Prussian Blue
#004577
ΔE00 6.91
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#173880 #805F17
analogous
#176D80 #173880 #2B1780
triadic
#173880 #801738 #388017
tetradic
#173880 #80176D #805F17 #17802B
square
#173880 #80176D #805F17 #17802B
split-complementary
#173880 #802B17 #6D8017
monochromatic
#050B1A #0E214C #173880 #204FB4 #366ADB
Accessibility & contrast
On white
10.97
#173880 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.91
#173880 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #173880
10.97:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##173880 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##173880 | 1.00 | 10.97 | 1.91 | 10.97 |
| #FFFFFF | 10.97 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.91 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.97 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004183
Deuteranopia (green-blind)
#00387F
Tritanopia (blue-blind)
#004A56
Achromatopsia (no color)
#3C3C3C
Design tokens & code
CSS
--color: #173880; /* rgb */ color: rgb(23, 56, 128); /* oklch */ color: oklch(36.3% 0.128 263.0);
Tailwind
colors: {
custom: {
50: '#676ea5',
500: '#173880',
950: '#000000',
},
}SCSS
$custom: #173880; $custom-light: #676ea5; $custom-dark: #000000;
JSON
{
"hex": "#173880",
"rgb": {
"r": 23,
"g": 56,
"b": 128
},
"hsl": {
"h": 221.143,
"s": 69.536,
"l": 29.608
},
"oklch": {
"l": 0.3633,
"c": 0.12803,
"h": 263
},
"luminance": 0.04569
}Semantic roles & 50–950 ramp
primary
#173880
secondary
#B48F3E
accent
#B53BEC
background
#F6F6FA
surface
#EBEBF4
border
#C6C6CE
text
#07070F
muted
#7A7A7F