#4379CB#4379CB
#4379CB is a mid, vivid blue. Relative luminance 0.192; OKLCH L 57.9% C 0.139 H 258.6°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).
Color values
| HEX | #4379CB |
|---|---|
| RGB | rgb(67, 121, 203) |
| HSL | hsl(216, 57%, 53%) |
| HSV | hsv(216, 67%, 80%) |
| CMYK | cmyk(67%, 40.4%, 0%, 20.4%) |
| CIE-LAB | lab(50.89, 8.70, -47.85) |
| CIE-LCH | lch(50.89, 48.63, 280.30°) |
| OKLab | oklab(57.92% -0.0276 -0.1364) |
| OKLCH | oklch(57.92% 0.139 258.6) |
| XYZ | xyz(19.9277, 19.1778, 59.1398) |
| Luminance | 0.1918 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Windows Blue
#3778BF
ΔE00 2.71
Deep Sky Blue
#0D75F8
ΔE00 4.42
Bluish
#2976BB
ΔE00 4.50
Medium Blue
#2C6FBB
ΔE00 4.78
Cerulean Blue
#056EEE
ΔE00 4.88
Clear Blue
#247AFD
ΔE00 4.96
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4379CB #CB9543
analogous
#43BDCB #4379CB #5143CB
triadic
#4379CB #CB4379 #79CB43
tetradic
#4379CB #CB43BD #CB9543 #43CB51
square
#4379CB #CB43BD #CB9543 #43CB51
split-complementary
#4379CB #CB5143 #BDCB43
monochromatic
#204174 #2D5CA4 #4379CB #739BD8 #A3BDE6
Accessibility & contrast
On white
4.34
#4379CB on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.84
#4379CB on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #4379CB
4.84:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4379CB | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##4379CB | 1.00 | 4.34 | 4.84 | 4.84 |
| #FFFFFF | 4.34 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.84 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.84 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5380CE
Deuteranopia (green-blind)
#3F73C9
Tritanopia (blue-blind)
#008C98
Achromatopsia (no color)
#797979
Design tokens & code
CSS
--color: #4379cb; /* rgb */ color: rgb(67, 121, 203); /* oklch */ color: oklch(57.9% 0.139 258.6);
Tailwind
colors: {
custom: {
50: '#859fdb',
500: '#4379cb',
950: '#000000',
},
}SCSS
$custom: #4379cb; $custom-light: #859fdb; $custom-dark: #000000;
JSON
{
"hex": "#4379cb",
"rgb": {
"r": 67,
"g": 121,
"b": 203
},
"hsl": {
"h": 216.176,
"s": 56.667,
"l": 52.941
},
"oklch": {
"l": 0.57915,
"c": 0.13912,
"h": 258.6
},
"luminance": 0.1918
}Semantic roles & 50–950 ramp
primary
#4379CB
secondary
#D2BB98
accent
#A448E0
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83