#63B0EF#63B0EF
#63B0EF is a light, moderate cyan. Relative luminance 0.399; OKLCH L 73.3% C 0.120 H 245.1°. Best body text is #000000 at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #63B0EF |
|---|---|
| RGB | rgb(99, 176, 239) |
| HSL | hsl(207, 81%, 66%) |
| HSV | hsv(207, 59%, 94%) |
| CMYK | cmyk(58.6%, 26.4%, 0%, 6.3%) |
| CIE-LAB | lab(69.42, -5.61, -38.62) |
| CIE-LCH | lch(69.42, 39.03, 261.73°) |
| OKLab | oklab(73.35% -0.0503 -0.1085) |
| OKLCH | oklch(73.35% 0.12 245.1) |
| XYZ | xyz(36.2452, 39.9320, 87.4422) |
| Luminance | 0.3993 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Sky Blue (survey)
#75BBFD
ΔE00 3.51
Carolina Blue
#8AB8FE
ΔE00 6.74
Sky
#82CAFC
ΔE00 7.21
Lightblue (survey)
#7BC8F6
ΔE00 7.25
Azure (survey)
#069AF3
ΔE00 7.29
Deepskyblue
#00BFFF
ΔE00 7.81
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#63B0EF #EFA263
analogous
#63EFE8 #63B0EF #636AEF
triadic
#63B0EF #EF63B0 #B0EF63
tetradic
#63B0EF #E863EF #EFA263 #6AEF63
square
#63B0EF #E863EF #EFA263 #6AEF63
split-complementary
#63B0EF #EF636A #EFE863
monochromatic
#1475C4 #2B94E9 #63B0EF #9BCCF5 #D2E8FA
Accessibility & contrast
On white
2.34
#63B0EF on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
8.99
#63B0EF on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #63B0EF
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##63B0EF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##63B0EF | 1.00 | 2.34 | 8.99 | 8.99 |
| #FFFFFF | 2.34 | 1.00 | 21.00 | 21.00 |
| #000000 | 8.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 8.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#95B1F2
Deuteranopia (green-blind)
#82A3EE
Tritanopia (blue-blind)
#00BFC6
Achromatopsia (no color)
#A9A9A9
Design tokens & code
CSS
--color: #63b0ef; /* rgb */ color: rgb(99, 176, 239); /* oklch */ color: oklch(73.3% 0.120 245.1);
Tailwind
colors: {
custom: {
50: '#9ac7f4',
500: '#63b0ef',
950: '#000000',
},
}SCSS
$custom: #63b0ef; $custom-light: #9ac7f4; $custom-dark: #000000;
JSON
{
"hex": "#63b0ef",
"rgb": {
"r": 99,
"g": 176,
"b": 239
},
"hsl": {
"h": 207,
"s": 81.395,
"l": 66.275
},
"oklch": {
"l": 0.73347,
"c": 0.1196,
"h": 245.1
},
"luminance": 0.39935
}Semantic roles & 50–950 ramp
primary
#63B0EF
secondary
#EED5C0
accent
#6808DE
background
#FAFCFE
surface
#F3F8FD
border
#CDD1D5
text
#0F1317
muted
#7F8285