#51A4E3#51A4E3
#51A4E3 is a light, vivid cyan. Relative luminance 0.338; OKLCH L 69.4% C 0.123 H 243.9°. Best body text is #000000 at 7.77:1 contrast (WCAG AA passes).
Color values
| HEX | #51A4E3 |
|---|---|
| RGB | rgb(81, 164, 227) |
| HSL | hsl(206, 72%, 60%) |
| HSV | hsv(206, 64%, 89%) |
| CMYK | cmyk(64.3%, 27.8%, 0%, 11%) |
| CIE-LAB | lab(64.84, -6.02, -39.26) |
| CIE-LCH | lch(64.84, 39.72, 261.28°) |
| OKLab | oklab(69.37% -0.0542 -0.1106) |
| OKLCH | oklch(69.37% 0.123 243.9) |
| XYZ | xyz(30.5287, 33.8432, 77.5817) |
| Luminance | 0.3385 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Azure (survey)
#069AF3
ΔE00 4.13
Sky Blue (survey)
#75BBFD
ΔE00 7.15
Dodgerblue
#1E90FF
ΔE00 7.18
Dark Sky Blue
#448EE4
ΔE00 7.52
Cornflowerblue
#6495ED
ΔE00 8.01
Deepskyblue
#00BFFF
ΔE00 9.32
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51A4E3 #E39051
analogous
#51E3D9 #51A4E3 #515BE3
triadic
#51A4E3 #E351A4 #A4E351
tetradic
#51A4E3 #D951E3 #E39051 #5BE351
square
#51A4E3 #D951E3 #E39051 #5BE351
split-complementary
#51A4E3 #E3515B #E3D951
monochromatic
#1A66A0 #2288D5 #51A4E3 #86C0EB #BADBF4
Accessibility & contrast
On white
2.70
#51A4E3 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.77
#51A4E3 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51A4E3
7.77:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51A4E3 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51A4E3 | 1.00 | 2.70 | 7.77 | 7.77 |
| #FFFFFF | 2.70 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.77 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.77 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#88A5E6
Deuteranopia (green-blind)
#7497E2
Tritanopia (blue-blind)
#00B3BA
Achromatopsia (no color)
#9D9D9D
Design tokens & code
CSS
--color: #51a4e3; /* rgb */ color: rgb(81, 164, 227); /* oklch */ color: oklch(69.4% 0.123 243.9);
Tailwind
colors: {
custom: {
50: '#8fbeec',
500: '#51a4e3',
950: '#000000',
},
}SCSS
$custom: #51a4e3; $custom-light: #8fbeec; $custom-dark: #000000;
JSON
{
"hex": "#51a4e3",
"rgb": {
"r": 81,
"g": 164,
"b": 227
},
"hsl": {
"h": 205.89,
"s": 72.277,
"l": 60.392
},
"oklch": {
"l": 0.69371,
"c": 0.1232,
"h": 243.9
},
"luminance": 0.33846
}Semantic roles & 50–950 ramp
primary
#51A4E3
secondary
#E4C4AC
accent
#6511D4
background
#F9FBFE
surface
#F2F6FD
border
#CCD0D5
text
#0E1216
muted
#7E8184