#437DDF#437DDF
#437DDF is a mid, vivid blue. Relative luminance 0.212; OKLCH L 60.0% C 0.161 H 260.2°. Best body text is #000000 at 5.24:1 contrast (WCAG AA passes).
Color values
| HEX | #437DDF |
|---|---|
| RGB | rgb(67, 125, 223) |
| HSL | hsl(218, 71%, 57%) |
| HSV | hsv(218, 70%, 87%) |
| CMYK | cmyk(70%, 43.9%, 0%, 12.5%) |
| CIE-LAB | lab(53.15, 13.34, -55.56) |
| CIE-LCH | lch(53.15, 57.14, 283.50°) |
| OKLab | oklab(60.03% -0.0274 -0.1589) |
| OKLCH | oklch(60.03% 0.161 260.2) |
| XYZ | xyz(22.9629, 21.1858, 72.6768) |
| Luminance | 0.2119 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Clear Blue
#247AFD
ΔE00 2.98
Azure
#007FFF
ΔE00 3.50
Dodger Blue
#3E82FC
ΔE00 3.50
Deep Sky Blue
#0D75F8
ΔE00 3.53
Lightish Blue
#3D7AFD
ΔE00 3.56
Windows Blue
#3778BF
ΔE00 4.86
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#437DDF #DFA543
analogous
#43CBDF #437DDF #5743DF
triadic
#437DDF #DF437D #7DDF43
tetradic
#437DDF #DF43CB #DFA543 #43DF57
square
#437DDF #DF43CB #DFA543 #43DF57
split-complementary
#437DDF #DF5743 #CBDF43
monochromatic
#18458F #215EC4 #437DDF #77A1E8 #ACC5F1
Accessibility & contrast
On white
4.01
#437DDF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.24
#437DDF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #437DDF
5.24:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##437DDF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##437DDF | 1.00 | 4.01 | 5.24 | 5.24 |
| #FFFFFF | 4.01 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.24 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.24 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4C87E3
Deuteranopia (green-blind)
#2F78DD
Tritanopia (blue-blind)
#0094A3
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #437ddf; /* rgb */ color: rgb(67, 125, 223); /* oklch */ color: oklch(60.0% 0.161 260.2);
Tailwind
colors: {
custom: {
50: '#89a2e9',
500: '#437ddf',
950: '#000000',
},
}SCSS
$custom: #437ddf; $custom-light: #89a2e9; $custom-dark: #000000;
JSON
{
"hex": "#437ddf",
"rgb": {
"r": 67,
"g": 125,
"b": 223
},
"hsl": {
"h": 217.692,
"s": 70.909,
"l": 56.863
},
"oklch": {
"l": 0.60031,
"c": 0.16129,
"h": 260.2
},
"luminance": 0.21188
}Semantic roles & 50–950 ramp
primary
#437DDF
secondary
#DFC79F
accent
#AB3AEE
background
#F9F9FE
surface
#F1F2FD
border
#CBCCD5
text
#0D0F16
muted
#7E7E84