#4573DD#4573DD
#4573DD is a mid, vivid blue. Relative luminance 0.187; OKLCH L 57.9% C 0.170 H 264.2°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).
Color values
| HEX | #4573DD |
|---|---|
| RGB | rgb(69, 115, 221) |
| HSL | hsl(222, 69%, 57%) |
| HSV | hsv(222, 69%, 87%) |
| CMYK | cmyk(68.8%, 48%, 0%, 13.3%) |
| CIE-LAB | lab(50.39, 19.12, -58.87) |
| CIE-LCH | lch(50.39, 61.89, 287.99°) |
| OKLab | oklab(57.89% -0.0173 -0.1688) |
| OKLCH | oklch(57.89% 0.17 264.2) |
| XYZ | xyz(21.6315, 18.7449, 70.8707) |
| Luminance | 0.1875 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 2.26
Cerulean Blue
#056EEE
ΔE00 3.43
Royal Blue
#4169E1
ΔE00 3.56
Deep Sky Blue
#0D75F8
ΔE00 3.70
Lightish Blue
#3D7AFD
ΔE00 4.37
Clear Blue
#247AFD
ΔE00 4.55
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#4573DD #DDAF45
analogous
#45BFDD #4573DD #6345DD
triadic
#4573DD #DD4573 #73DD45
tetradic
#4573DD #DD45BF #DDAF45 #45DD63
square
#4573DD #DD45BF #DDAF45 #45DD63
split-complementary
#4573DD #DD6345 #BFDD45
monochromatic
#1A3D8E #2353C1 #4573DD #799AE6 #ACC1F0
Accessibility & contrast
On white
4.42
#4573DD on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.75
#4573DD on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #4573DD
4.75:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##4573DD | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##4573DD | 1.00 | 4.42 | 4.75 | 4.75 |
| #FFFFFF | 4.42 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.75 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.75 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#397FE1
Deuteranopia (green-blind)
#0E71DB
Tritanopia (blue-blind)
#008C9D
Achromatopsia (no color)
#787878
Design tokens & code
CSS
--color: #4573dd; /* rgb */ color: rgb(69, 115, 221); /* oklch */ color: oklch(57.9% 0.170 264.2);
Tailwind
colors: {
custom: {
50: '#899ae8',
500: '#4573dd',
950: '#000000',
},
}SCSS
$custom: #4573dd; $custom-light: #899ae8; $custom-dark: #000000;
JSON
{
"hex": "#4573dd",
"rgb": {
"r": 69,
"g": 115,
"b": 221
},
"hsl": {
"h": 221.842,
"s": 69.091,
"l": 56.863
},
"oklch": {
"l": 0.57891,
"c": 0.16969,
"h": 264.2
},
"luminance": 0.18747
}Semantic roles & 50–950 ramp
primary
#4573DD
secondary
#DECBA0
accent
#B73CEC
background
#F9F9FE
surface
#F1F2FD
border
#CBCCD5
text
#0D0E16
muted
#7E7E84