#636FEA#636FEA
#636FEA is a mid, vivid blue. Relative luminance 0.200; OKLCH L 59.6% C 0.184 H 275.2°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).
Color values
| HEX | #636FEA |
|---|---|
| RGB | rgb(99, 111, 234) |
| HSL | hsl(235, 76%, 65%) |
| HSV | hsv(235, 58%, 92%) |
| CMYK | cmyk(57.7%, 52.6%, 0%, 8.2%) |
| CIE-LAB | lab(51.79, 31.02, -63.83) |
| CIE-LCH | lch(51.79, 70.97, 295.92°) |
| OKLab | oklab(59.65% 0.0165 -0.1828) |
| OKLCH | oklch(59.65% 0.184 275.2) |
| XYZ | xyz(25.6765, 19.9601, 80.3256) |
| Luminance | 0.1996 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 3.71
Cornflower Blue
#5170D7
ΔE00 4.32
Mediumslateblue
#7B68EE
ΔE00 5.01
Royal Blue
#4169E1
ΔE00 5.25
Dark Periwinkle
#665FD1
ΔE00 6.53
Lightish Blue
#3D7AFD
ΔE00 6.73
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#636FEA #EADE63
analogous
#63B2EA #636FEA #9B63EA
triadic
#636FEA #EA636F #6FEA63
tetradic
#636FEA #EA63B2 #EADE63 #63EA9B
square
#636FEA #EA63B2 #EADE63 #63EA9B
split-complementary
#636FEA #EA9B63 #B2EA63
monochromatic
#1927BA #2D3DE3 #636FEA #99A1F1 #CFD3F9
Accessibility & contrast
On white
4.21
#636FEA on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
4.99
#636FEA on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #636FEA
4.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##636FEA | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##636FEA | 1.00 | 4.21 | 4.99 | 4.99 |
| #FFFFFF | 4.21 | 1.00 | 21.00 | 21.00 |
| #000000 | 4.99 | 21.00 | 1.00 | 1.00 |
| ##000000 | 4.99 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2481EE
Deuteranopia (green-blind)
#0076E7
Tritanopia (blue-blind)
#008BA2
Achromatopsia (no color)
#7B7B7B
Design tokens & code
CSS
--color: #636fea; /* rgb */ color: rgb(99, 111, 234); /* oklch */ color: oklch(59.6% 0.184 275.2);
Tailwind
colors: {
custom: {
50: '#9a98f1',
500: '#636fea',
950: '#000000',
},
}SCSS
$custom: #636fea; $custom-light: #9a98f1; $custom-dark: #000000;
JSON
{
"hex": "#636fea",
"rgb": {
"r": 99,
"g": 111,
"b": 234
},
"hsl": {
"h": 234.667,
"s": 76.271,
"l": 65.294
},
"oklch": {
"l": 0.59649,
"c": 0.18358,
"h": 275.2
},
"luminance": 0.19962
}Semantic roles & 50–950 ramp
primary
#636FEA
secondary
#EBE7BE
accent
#C60DD8
background
#FAF9FE
surface
#F4F2FD
border
#CECCD5
text
#0F0D17
muted
#7F7E85