#63B9E7#63B9E7
#63B9E7 is a light, moderate cyan. Relative luminance 0.431; OKLCH L 75.0% C 0.106 H 234.0°. Best body text is #000000 at 9.62:1 contrast (WCAG AA passes).
Color values
| HEX | #63B9E7 |
|---|---|
| RGB | rgb(99, 185, 231) |
| HSL | hsl(201, 73%, 65%) |
| HSV | hsv(201, 57%, 91%) |
| CMYK | cmyk(57.1%, 19.9%, 0%, 9.4%) |
| CIE-LAB | lab(71.63, -12.94, -30.84) |
| CIE-LCH | lch(71.63, 33.45, 247.24°) |
| OKLab | oklab(74.99% -0.0625 -0.0861) |
| OKLCH | oklch(74.99% 0.106 234) |
| XYZ | xyz(36.9129, 43.1167, 81.9629) |
| Luminance | 0.4312 (WCAG relative) |
| Temperature | cool |
| Family | cyan |
Closest named colors
Lightblue (survey)
#7BC8F6
ΔE00 4.32
Deepskyblue
#00BFFF
ΔE00 4.56
Sky
#82CAFC
ΔE00 5.50
Sky Blue (survey)
#75BBFD
ΔE00 6.04
Lightskyblue
#87CEFA
ΔE00 6.07
Baby Blue
#89CFF0
ΔE00 6.78
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#63B9E7 #E79163
analogous
#63E7D3 #63B9E7 #6377E7
triadic
#63B9E7 #E763B9 #B9E763
tetradic
#63B9E7 #D363E7 #E79163 #77E763
square
#63B9E7 #D363E7 #E79163 #77E763
split-complementary
#63B9E7 #E76377 #E7D363
monochromatic
#1C7FB4 #2EA1DF #63B9E7 #98D1EF #CDE9F7
Accessibility & contrast
On white
2.18
#63B9E7 on #FFFFFF
AA ✗AA large ✗AAA ✗
On black
9.62
#63B9E7 on #000000
AA ✓AA large ✓AAA ✓
Best text color
#000000 on #63B9E7
9.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##63B9E7 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##63B9E7 | 1.00 | 2.18 | 9.62 | 9.62 |
| #FFFFFF | 2.18 | 1.00 | 21.00 | 21.00 |
| #000000 | 9.62 | 21.00 | 1.00 | 1.00 |
| ##000000 | 9.62 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#A3B7E9
Deuteranopia (green-blind)
#91A9E6
Tritanopia (blue-blind)
#00C5C8
Achromatopsia (no color)
#AFAFAF
Design tokens & code
CSS
--color: #63b9e7; /* rgb */ color: rgb(99, 185, 231); /* oklch */ color: oklch(75.0% 0.106 234.0);
Tailwind
colors: {
custom: {
50: '#99ceee',
500: '#63b9e7',
950: '#000000',
},
}SCSS
$custom: #63b9e7; $custom-light: #99ceee; $custom-dark: #000000;
JSON
{
"hex": "#63b9e7",
"rgb": {
"r": 99,
"g": 185,
"b": 231
},
"hsl": {
"h": 200.909,
"s": 73.333,
"l": 64.706
},
"oklch": {
"l": 0.74993,
"c": 0.10641,
"h": 234
},
"luminance": 0.4312
}Semantic roles & 50–950 ramp
primary
#63B9E7
secondary
#EACCBC
accent
#5510D5
background
#FAFCFE
surface
#F3F9FD
border
#CDD2D5
text
#0F1316
muted
#7F8284