#4173CC#4173CC
#4173CC is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.6% C 0.148 H 261.0°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).
Color values
| HEX | #4173CC |
|---|---|
| RGB | rgb(65, 115, 204) |
| HSL | hsl(218, 58%, 53%) |
| HSV | hsv(218, 68%, 80%) |
| CMYK | cmyk(68.1%, 43.6%, 0%, 20%) |
| CIE-LAB | lab(49.18, 12.45, -51.15) |
| CIE-LCH | lch(49.18, 52.64, 283.67°) |
| OKLab | oklab(56.59% -0.0232 -0.1462) |
| OKLCH | oklch(56.59% 0.148 261) |
| XYZ | xyz(19.2059, 17.7430, 59.5276) |
| Luminance | 0.1774 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 3.71
Windows Blue
#3778BF
ΔE00 3.75
Cerulean Blue
#056EEE
ΔE00 3.85
Medium Blue
#2C6FBB
ΔE00 4.00
French Blue
#436BAD
ΔE00 4.60
Deep Sky Blue
#0D75F8
ΔE00 4.63
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4173CC #CC9A41
analogous
#41B9CC #4173CC #5441CC
triadic
#4173CC #CC4173 #73CC41
tetradic
#4173CC #CC41B9 #CC9A41 #41CC54
square
#4173CC #CC41B9 #CC9A41 #41CC54
split-complementary
#4173CC #CC5441 #B9CC41
monochromatic
#1F3D74 #2C57A4 #4173CC #7197D9 #A1BAE6
Accessibility & contrast
On white
4.62
#4173CC on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.55
#4173CC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#FFFFFF on #4173CC
4.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4173CC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##4173CC | 1.00 | 4.62 | 4.55 | 4.62 |
| #FFFFFF | 4.62 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.62 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#487CCF
Deuteranopia (green-blind)
#306FCA
Tritanopia (blue-blind)
#008895
Achromatopsia (no color)
#757575
Design tokens & code
CSS
--color: #4173cc; /* rgb */ color: rgb(65, 115, 204); /* oklch */ color: oklch(56.6% 0.148 261.0);
Tailwind
colors: {
custom: {
50: '#859adc',
500: '#4173cc',
950: '#000000',
},
}SCSS
$custom: #4173cc; $custom-light: #859adc; $custom-dark: #000000;
JSON
{
"hex": "#4173cc",
"rgb": {
"r": 65,
"g": 115,
"b": 204
},
"hsl": {
"h": 218.417,
"s": 57.676,
"l": 52.745
},
"oklch": {
"l": 0.56587,
"c": 0.14802,
"h": 261
},
"luminance": 0.17745
}Semantic roles & 50–950 ramp
primary
#4173CC
secondary
#D3BD96
accent
#AA47E1
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83