#537AC8#537AC8
#537AC8 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.7% C 0.128 H 263.0°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #537AC8 |
|---|---|
| RGB | rgb(83, 122, 200) |
| HSL | hsl(220, 52%, 55%) |
| HSV | hsv(220, 59%, 78%) |
| CMYK | cmyk(58.5%, 39%, 0%, 21.6%) |
| CIE-LAB | lab(51.75, 9.98, -44.72) |
| CIE-LCH | lch(51.75, 45.82, 282.58°) |
| OKLab | oklab(58.73% -0.0157 -0.1269) |
| OKLCH | oklch(58.73% 0.128 263) |
| XYZ | xyz(20.9486, 19.9265, 57.3746) |
| Luminance | 0.1993 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 4.11
Windows Blue
#3778BF
ΔE00 4.81
Off Blue
#5684AE
ΔE00 5.53
Deep Sky Blue
#0D75F8
ΔE00 5.62
Lightish Blue
#3D7AFD
ΔE00 5.65
Clear Blue
#247AFD
ΔE00 5.73
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#537AC8 #C8A153
analogous
#53B4C8 #537AC8 #6653C8
triadic
#537AC8 #C8537A #7AC853
tetradic
#537AC8 #C853B4 #C8A153 #53C866
square
#537AC8 #C853B4 #C8A153 #53C866
split-complementary
#537AC8 #C86653 #B4C853
monochromatic
#27437A #365CA8 #537AC8 #819ED7 #B0C2E6
Accessibility & contrast
On white
4.21
#537AC8 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.99
#537AC8 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #537AC8
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##537AC8 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##537AC8 | 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)
#5981CB
Deuteranopia (green-blind)
#4A76C6
Tritanopia (blue-blind)
#008B97
Achromatopsia (no color)
#7B7B7B
Design tokens & code
CSS
--color: #537ac8; /* rgb */ color: rgb(83, 122, 200); /* oklch */ color: oklch(58.7% 0.128 263.0);
Tailwind
colors: {
custom: {
50: '#8ca0d9',
500: '#537ac8',
950: '#000000',
},
}SCSS
$custom: #537ac8; $custom-light: #8ca0d9; $custom-dark: #000000;
JSON
{
"hex": "#537ac8",
"rgb": {
"r": 83,
"g": 122,
"b": 200
},
"hsl": {
"h": 220,
"s": 51.542,
"l": 55.49
},
"oklch": {
"l": 0.5873,
"c": 0.12789,
"h": 263
},
"luminance": 0.19928
}Semantic roles & 50–950 ramp
primary
#537AC8
secondary
#D4C4A3
accent
#AC4DDB
background
#F9F9FD
surface
#F1F2FA
border
#CBCCD3
text
#0D0E14
muted
#7E7E83