#4378DF#4378DF
#4378DF is a mid, vivid blue. Relative luminance 0.200; OKLCH L 59.0% C 0.167 H 262.1°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #4378DF |
|---|---|
| RGB | rgb(67, 120, 223) |
| HSL | hsl(220, 71%, 57%) |
| HSV | hsv(220, 70%, 87%) |
| CMYK | cmyk(70%, 46.2%, 0%, 12.5%) |
| CIE-LAB | lab(51.78, 16.43, -57.76) |
| CIE-LCH | lch(51.78, 60.05, 285.88°) |
| OKLab | oklab(58.98% -0.023 -0.1655) |
| OKLCH | oklch(58.98% 0.167 262.1) |
| XYZ | xyz(22.3457, 19.9516, 72.4711) |
| Luminance | 0.1995 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Deep Sky Blue
#0D75F8
ΔE00 2.97
Clear Blue
#247AFD
ΔE00 3.24
Lightish Blue
#3D7AFD
ΔE00 3.43
Cornflower Blue
#5170D7
ΔE00 3.99
Cerulean Blue
#056EEE
ΔE00 4.02
Dodger Blue
#3E82FC
ΔE00 4.64
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4378DF #DFAA43
analogous
#43C6DF #4378DF #5C43DF
triadic
#4378DF #DF4378 #78DF43
tetradic
#4378DF #DF43C6 #DFAA43 #43DF5C
square
#4378DF #DF43C6 #DFAA43 #43DF5C
split-complementary
#4378DF #DF5C43 #C6DF43
monochromatic
#18418F #2158C4 #4378DF #779EE8 #ACC3F1
Accessibility & contrast
On white
4.21
#4378DF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.99
#4378DF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #4378DF
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4378DF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##4378DF | 1.00 | 4.21 | 4.99 | 4.99 |
| #FFFFFF | 4.21 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4283E3
Deuteranopia (green-blind)
#1F75DD
Tritanopia (blue-blind)
#0090A1
Achromatopsia (no color)
#7B7B7B
Design tokens & code
CSS
--color: #4378df; /* rgb */ color: rgb(67, 120, 223); /* oklch */ color: oklch(59.0% 0.167 262.1);
Tailwind
colors: {
custom: {
50: '#899eea',
500: '#4378df',
950: '#000000',
},
}SCSS
$custom: #4378df; $custom-light: #899eea; $custom-dark: #000000;
JSON
{
"hex": "#4378df",
"rgb": {
"r": 67,
"g": 120,
"b": 223
},
"hsl": {
"h": 219.615,
"s": 70.909,
"l": 56.863
},
"oklch": {
"l": 0.58977,
"c": 0.16708,
"h": 262.1
},
"luminance": 0.19954
}Semantic roles & 50–950 ramp
primary
#4378DF
secondary
#DFC99F
accent
#B13AEE
background
#F9F9FE
surface
#F1F2FD
border
#CBCCD5
text
#0D0E16
muted
#7E7E84