#51A3DC#51A3DC
#51A3DC is a light, moderate cyan. Relative luminance 0.331; OKLCH L 68.8% C 0.116 H 241.5°. Best body text is #000000 at 7.62:1 contrast (WCAG AA passes).
Color values
| HEX | #51A3DC |
|---|---|
| RGB | rgb(81, 163, 220) |
| HSL | hsl(205, 67%, 59%) |
| HSV | hsv(205, 63%, 86%) |
| CMYK | cmyk(63.2%, 25.9%, 0%, 13.7%) |
| CIE-LAB | lab(64.25, -7.74, -36.32) |
| CIE-LCH | lch(64.25, 37.13, 257.98°) |
| OKLab | oklab(68.81% -0.0554 -0.1021) |
| OKLCH | oklch(68.81% 0.116 241.5) |
| XYZ | xyz(29.4039, 33.1081, 72.5372) |
| Luminance | 0.3311 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Azure (survey)
#069AF3
ΔE00 4.54
Dodgerblue
#1E90FF
ΔE00 7.64
Dark Sky Blue
#448EE4
ΔE00 7.76
Sky Blue (survey)
#75BBFD
ΔE00 7.82
Cornflowerblue
#6495ED
ΔE00 8.46
Deepskyblue
#00BFFF
ΔE00 9.06
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51A3DC #DC8A51
analogous
#51DCCF #51A3DC #515EDC
triadic
#51A3DC #DC51A3 #A3DC51
tetradic
#51A3DC #CF51DC #DC8A51 #5EDC51
square
#51A3DC #CF51DC #DC8A51 #5EDC51
split-complementary
#51A3DC #DC515E #DCCF51
monochromatic
#1E6495 #2886C8 #51A3DC #84BEE6 #B7D9F0
Accessibility & contrast
On white
2.76
#51A3DC on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.62
#51A3DC on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51A3DC
7.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51A3DC | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51A3DC | 1.00 | 2.76 | 7.62 | 7.62 |
| #FFFFFF | 2.76 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.62 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.62 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#89A3DF
Deuteranopia (green-blind)
#7696DB
Tritanopia (blue-blind)
#00B1B7
Achromatopsia (no color)
#9C9C9C
Design tokens & code
CSS
--color: #51a3dc; /* rgb */ color: rgb(81, 163, 220); /* oklch */ color: oklch(68.8% 0.116 241.5);
Tailwind
colors: {
custom: {
50: '#8fbee7',
500: '#51a3dc',
950: '#000000',
},
}SCSS
$custom: #51a3dc; $custom-light: #8fbee7; $custom-dark: #000000;
JSON
{
"hex": "#51a3dc",
"rgb": {
"r": 81,
"g": 163,
"b": 220
},
"hsl": {
"h": 204.604,
"s": 66.507,
"l": 59.02
},
"oklch": {
"l": 0.68805,
"c": 0.11617,
"h": 241.5
},
"luminance": 0.33111
}Semantic roles & 50–950 ramp
primary
#51A3DC
secondary
#E0BFA9
accent
#853EE9
background
#F9FBFE
surface
#F2F6FC
border
#CCD0D5
text
#0D1216
muted
#7E8184