#51A4DD#51A4DD
#51A4DD is a light, moderate cyan. Relative luminance 0.335; OKLCH L 69.1% C 0.117 H 241.3°. Best body text is #000000 at 7.70:1 contrast (WCAG AA passes).
Color values
| HEX | #51A4DD |
|---|---|
| RGB | rgb(81, 164, 221) |
| HSL | hsl(204, 67%, 59%) |
| HSV | hsv(204, 63%, 87%) |
| CMYK | cmyk(63.3%, 25.8%, 0%, 13.3%) |
| CIE-LAB | lab(64.58, -7.97, -36.35) |
| CIE-LCH | lch(64.58, 37.22, 257.64°) |
| OKLab | oklab(69.08% -0.0561 -0.1022) |
| OKLCH | oklch(69.08% 0.117 241.3) |
| XYZ | xyz(29.7150, 33.5177, 73.2962) |
| Luminance | 0.3352 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Azure (survey)
#069AF3
ΔE00 4.74
Sky Blue (survey)
#75BBFD
ΔE00 7.61
Dodgerblue
#1E90FF
ΔE00 7.91
Dark Sky Blue
#448EE4
ΔE00 8.07
Cornflowerblue
#6495ED
ΔE00 8.70
Deepskyblue
#00BFFF
ΔE00 8.75
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51A4DD #DD8A51
analogous
#51DDD0 #51A4DD #515EDD
triadic
#51A4DD #DD51A4 #A4DD51
tetradic
#51A4DD #D051DD #DD8A51 #5EDD51
square
#51A4DD #D051DD #DD8A51 #5EDD51
split-complementary
#51A4DD #DD515E #DDD051
monochromatic
#1D6596 #2787C9 #51A4DD #84BFE7 #B7DAF1
Accessibility & contrast
On white
2.73
#51A4DD on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
7.70
#51A4DD on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51A4DD
7.70:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51A4DD | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51A4DD | 1.00 | 2.73 | 7.70 | 7.70 |
| #FFFFFF | 2.73 | 1.00 | 21.00 | 21.00 |
| #000000 | 7.70 | 21.00 | 1.00 | 1.00 |
| ##000000 | 7.70 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#8AA4E0
Deuteranopia (green-blind)
#7796DC
Tritanopia (blue-blind)
#00B2B8
Achromatopsia (no color)
#9D9D9D
Design tokens & code
CSS
--color: #51a4dd; /* rgb */ color: rgb(81, 164, 221); /* oklch */ color: oklch(69.1% 0.117 241.3);
Tailwind
colors: {
custom: {
50: '#8fbee7',
500: '#51a4dd',
950: '#000000',
},
}SCSS
$custom: #51a4dd; $custom-light: #8fbee7; $custom-dark: #000000;
JSON
{
"hex": "#51a4dd",
"rgb": {
"r": 81,
"g": 164,
"b": 221
},
"hsl": {
"h": 204.429,
"s": 67.308,
"l": 59.216
},
"oklch": {
"l": 0.6908,
"c": 0.11661,
"h": 241.3
},
"luminance": 0.33521
}Semantic roles & 50–950 ramp
primary
#51A4DD
secondary
#E0C0AA
accent
#843EEA
background
#F9FBFE
surface
#F2F6FC
border
#CCD0D5
text
#0D1216
muted
#7E8184