#51DDF3#51DDF3
#51DDF3 is a very light, vivid teal. Relative luminance 0.599; OKLCH L 83.1% C 0.122 H 209.8°. Best body text is #000000 at 12.99:1 contrast (WCAG AA passes).
Color values
| HEX | #51DDF3 |
|---|---|
| RGB | rgb(81, 221, 243) |
| HSL | hsl(188, 87%, 64%) |
| HSV | hsv(188, 67%, 95%) |
| CMYK | cmyk(66.7%, 9.1%, 0%, 4.7%) |
| CIE-LAB | lab(81.80, -30.64, -21.78) |
| CIE-LCH | lch(81.80, 37.59, 215.41°) |
| OKLab | oklab(83.12% -0.1055 -0.0605) |
| OKLCH | oklch(83.12% 0.122 209.8) |
| XYZ | xyz(45.4206, 59.9282, 93.9502) |
| Luminance | 0.5993 (WCAG relative) |
| Temperature | cool |
| Family | teal |
Closest named colors
Aqua Blue
#02D8E9
ΔE00 3.62
Robin'S Egg
#6DEDFD
ΔE00 4.15
Neon Blue
#04D9FF
ΔE00 4.36
Robin Egg Blue
#8AF1FE
ΔE00 6.02
Robin'S Egg Blue
#98EFF9
ΔE00 6.98
Sky Blue
#87CEEB
ΔE00 8.31
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#51DDF3 #F36751
analogous
#51F3B8 #51DDF3 #518CF3
triadic
#51DDF3 #F351DD #DDF351
tetradic
#51DDF3 #B851F3 #F36751 #8CF351
square
#51DDF3 #B851F3 #F36751 #8CF351
split-complementary
#51DDF3 #F3518C #F3B851
monochromatic
#0DA5BD #18D2EF #51DDF3 #8AE8F7 #C4F3FB
Accessibility & contrast
On white
1.62
#51DDF3 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
12.99
#51DDF3 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #51DDF3
12.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##51DDF3 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##51DDF3 | 1.00 | 1.62 | 12.99 | 12.99 |
| #FFFFFF | 1.62 | 1.00 | 21.00 | 21.00 |
| #000000 | 12.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 12.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#CAD5F4
Deuteranopia (green-blind)
#B3C4F3
Tritanopia (blue-blind)
#00E7E4
Achromatopsia (no color)
#CBCBCB
Design tokens & code
CSS
--color: #51ddf3; /* rgb */ color: rgb(81, 221, 243); /* oklch */ color: oklch(83.1% 0.122 209.8);
Tailwind
colors: {
custom: {
50: '#95e8f7',
500: '#51ddf3',
950: '#000000',
},
}SCSS
$custom: #51ddf3; $custom-light: #95e8f7; $custom-dark: #000000;
JSON
{
"hex": "#51ddf3",
"rgb": {
"r": 81,
"g": 221,
"b": 243
},
"hsl": {
"h": 188.148,
"s": 87.097,
"l": 63.529
},
"oklch": {
"l": 0.83117,
"c": 0.12163,
"h": 209.8
},
"luminance": 0.59933
}Semantic roles & 50–950 ramp
primary
#51DDF3
secondary
#BB412D
accent
#2102E4
background
#FCFEFF
surface
#F5FCFE
border
#CFD5D6
text
#0F1617
muted
#808485