#51A5E6#51A5E6
#51A5E6 is a light, vivid cyan. Relative luminance 0.344; OKLCH L 69.7% C 0.126 H 244.4°. Best body text is #000000 at 7.87:1 contrast (WCAG AA passes).
Color values
| HEX | #51A5E6 |
|---|---|
| RGB | rgb(81, 165, 230) |
| HSL | hsl(206, 75%, 61%) |
| HSV | hsv(206, 65%, 90%) |
| CMYK | cmyk(64.8%, 28.3%, 0%, 9.8%) |
| CIE-LAB | lab(65.25, -5.60, -40.26) |
| CIE-LCH | lch(65.25, 40.64, 262.08°) |
| OKLab | oklab(69.74% -0.0543 -0.1135) |
| OKLCH | oklch(69.74% 0.126 244.4) |
| XYZ | xyz(31.1260, 34.3696, 79.8412) |
| Luminance | 0.3437 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Azure (survey)
#069AF3
ΔE00 4.22
Sky Blue (survey)
#75BBFD
ΔE00 6.80
Dodgerblue
#1E90FF
ΔE00 7.26
Dark Sky Blue
#448EE4
ΔE00 7.70
Cornflowerblue
#6495ED
ΔE00 8.07
Carolina Blue
#8AB8FE
ΔE00 9.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51A5E6 #E69251
analogous
#51E6DC #51A5E6 #515AE6
triadic
#51A5E6 #E651A5 #A5E651
tetradic
#51A5E6 #DC51E6 #E69251 #5AE651
square
#51A5E6 #DC51E6 #E69251 #5AE651
split-complementary
#51A5E6 #E6515A #E6DC51
monochromatic
#1867A5 #1F89DA #51A5E6 #87C1EE #BCDCF5
Accessibility & contrast
On white
2.67
#51A5E6 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.87
#51A5E6 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51A5E6
7.87:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51A5E6 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51A5E6 | 1.00 | 2.67 | 7.87 | 7.87 |
| #FFFFFF | 2.67 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.87 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.87 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#88A6E9
Deuteranopia (green-blind)
#7498E5
Tritanopia (blue-blind)
#00B5BC
Achromatopsia (no color)
#9E9E9E
Design tokens & code
CSS
--color: #51a5e6; /* rgb */ color: rgb(81, 165, 230); /* oklch */ color: oklch(69.7% 0.126 244.4);
Tailwind
colors: {
custom: {
50: '#90bfee',
500: '#51a5e6',
950: '#000000',
},
}SCSS
$custom: #51a5e6; $custom-light: #90bfee; $custom-dark: #000000;
JSON
{
"hex": "#51a5e6",
"rgb": {
"r": 81,
"g": 165,
"b": 230
},
"hsl": {
"h": 206.174,
"s": 74.874,
"l": 60.98
},
"oklch": {
"l": 0.69744,
"c": 0.12584,
"h": 244.4
},
"luminance": 0.34373
}Semantic roles & 50–950 ramp
primary
#51A5E6
secondary
#E5C6AD
accent
#660ED7
background
#F9FBFE
surface
#F2F7FD
border
#CCD0D5
text
#0E1216
muted
#7E8184