#537CCF#537CCF
#537CCF is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.6% C 0.135 H 263.1°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).
Color values
| HEX | #537CCF |
|---|---|
| RGB | rgb(83, 124, 207) |
| HSL | hsl(220, 56%, 57%) |
| HSV | hsv(220, 60%, 81%) |
| CMYK | cmyk(59.9%, 40.1%, 0%, 18.8%) |
| CIE-LAB | lab(52.68, 11.10, -47.23) |
| CIE-LCH | lch(52.68, 48.52, 283.23°) |
| OKLab | oklab(59.57% -0.0163 -0.1342) |
| OKLCH | oklch(59.57% 0.135 263.1) |
| XYZ | xyz(22.0335, 20.7574, 61.8648) |
| Luminance | 0.2076 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 4.49
Lightish Blue
#3D7AFD
ΔE00 4.86
Clear Blue
#247AFD
ΔE00 5.00
Windows Blue
#3778BF
ΔE00 5.19
Deep Sky Blue
#0D75F8
ΔE00 5.22
Dodger Blue
#3E82FC
ΔE00 5.28
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#537CCF #CFA653
analogous
#53BACF #537CCF #6853CF
triadic
#537CCF #CF537C #7CCF53
tetradic
#537CCF #CF53BA #CFA653 #53CF68
square
#537CCF #CF53BA #CFA653 #53CF68
split-complementary
#537CCF #CF6853 #BACF53
monochromatic
#254483 #325DB3 #537CCF #83A0DC #B3C5EA
Accessibility & contrast
On white
4.08
#537CCF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.15
#537CCF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #537CCF
5.15:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##537CCF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##537CCF | 1.00 | 4.08 | 5.15 | 5.15 |
| #FFFFFF | 4.08 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.15 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.15 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5884D2
Deuteranopia (green-blind)
#4778CD
Tritanopia (blue-blind)
#008F9B
Achromatopsia (no color)
#7E7E7E
Design tokens & code
CSS
--color: #537ccf; /* rgb */ color: rgb(83, 124, 207); /* oklch */ color: oklch(59.6% 0.135 263.1);
Tailwind
colors: {
custom: {
50: '#8da1de',
500: '#537ccf',
950: '#000000',
},
}SCSS
$custom: #537ccf; $custom-light: #8da1de; $custom-dark: #000000;
JSON
{
"hex": "#537ccf",
"rgb": {
"r": 83,
"g": 124,
"b": 207
},
"hsl": {
"h": 220.161,
"s": 56.364,
"l": 56.863
},
"oklch": {
"l": 0.5957,
"c": 0.13524,
"h": 263.1
},
"luminance": 0.20759
}Semantic roles & 50–950 ramp
primary
#537CCF
secondary
#D8C7A6
accent
#AE48E0
background
#F9F9FD
surface
#F1F2FB
border
#CBCCD4
text
#0D0E15
muted
#7E7E83