#537CD9#537CD9
#537CD9 is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.2% C 0.149 H 264.5°. Best body text is #000000 at 5.25:1 contrast (WCAG AA passes).
Color values
| HEX | #537CD9 |
|---|---|
| RGB | rgb(83, 124, 217) |
| HSL | hsl(222, 64%, 59%) |
| HSV | hsv(222, 62%, 85%) |
| CMYK | cmyk(61.8%, 42.9%, 0%, 14.9%) |
| CIE-LAB | lab(53.24, 14.48, -52.01) |
| CIE-LCH | lch(53.24, 53.99, 285.56°) |
| OKLab | oklab(60.18% -0.0144 -0.1483) |
| OKLCH | oklch(60.18% 0.149 264.5) |
| XYZ | xyz(23.2950, 21.2620, 68.5085) |
| Luminance | 0.2126 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Lightish Blue
#3D7AFD
ΔE00 3.87
Cornflower Blue
#5170D7
ΔE00 4.32
Clear Blue
#247AFD
ΔE00 4.33
Dodger Blue
#3E82FC
ΔE00 4.50
Soft Blue
#6488EA
ΔE00 4.76
Deep Sky Blue
#0D75F8
ΔE00 4.80
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#537CD9 #D9B053
analogous
#53BFD9 #537CD9 #6D53D9
triadic
#537CD9 #D9537C #7CD953
tetradic
#537CD9 #D953BF #D9B053 #53D96D
square
#537CD9 #D953BF #D9B053 #53D96D
split-complementary
#537CD9 #D96D53 #BFD953
monochromatic
#204391 #2B5AC4 #537CD9 #85A2E4 #B7C8EF
Accessibility & contrast
On white
4.00
#537CD9 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.25
#537CD9 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #537CD9
5.25:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##537CD9 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##537CD9 | 1.00 | 4.00 | 5.25 | 5.25 |
| #FFFFFF | 4.00 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.25 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.25 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5186DD
Deuteranopia (green-blind)
#3D79D7
Tritanopia (blue-blind)
#0091A0
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #537cd9; /* rgb */ color: rgb(83, 124, 217); /* oklch */ color: oklch(60.2% 0.149 264.5);
Tailwind
colors: {
custom: {
50: '#8fa1e5',
500: '#537cd9',
950: '#000000',
},
}SCSS
$custom: #537cd9; $custom-light: #8fa1e5; $custom-dark: #000000;
JSON
{
"hex": "#537cd9",
"rgb": {
"r": 83,
"g": 124,
"b": 217
},
"hsl": {
"h": 221.642,
"s": 63.81,
"l": 58.824
},
"oklch": {
"l": 0.60175,
"c": 0.14896,
"h": 264.5
},
"luminance": 0.21264
}Semantic roles & 50–950 ramp
primary
#537CD9
secondary
#DECEAA
accent
#B441E7
background
#F9F9FE
surface
#F2F2FC
border
#CCCCD5
text
#0D0E16
muted
#7E7E84