#636DF4#636DF4
#636DF4 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 60.0% C 0.199 H 275.4°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).
Color values
| HEX | #636DF4 |
|---|---|
| RGB | rgb(99, 109, 244) |
| HSL | hsl(236, 87%, 67%) |
| HSV | hsv(236, 59%, 96%) |
| CMYK | cmyk(59.4%, 55.3%, 0%, 4.3%) |
| CIE-LAB | lab(51.97, 35.45, -69.13) |
| CIE-LCH | lch(51.97, 77.69, 297.15°) |
| OKLab | oklab(60% 0.0189 -0.1984) |
| OKLCH | oklch(60% 0.199 275.4) |
| XYZ | xyz(26.9380, 20.1195, 88.0343) |
| Luminance | 0.2012 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 3.83
Mediumslateblue
#7B68EE
ΔE00 4.48
Cornflower Blue
#5170D7
ΔE00 5.43
Royal Blue
#4169E1
ΔE00 5.82
Dark Periwinkle
#665FD1
ΔE00 6.82
Lightish Blue
#3D7AFD
ΔE00 7.04
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#636DF4 #F4EA63
analogous
#63B6F4 #636DF4 #A263F4
triadic
#636DF4 #F4636D #6DF463
tetradic
#636DF4 #F463B6 #F4EA63 #63F4A2
square
#636DF4 #F463B6 #F4EA63 #63F4A2
split-complementary
#636DF4 #F4A263 #B6F463
monochromatic
#0F1CCE #2A37F0 #636DF4 #9CA3F8 #D5D8FC
Accessibility & contrast
On white
4.18
#636DF4 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.02
#636DF4 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #636DF4
5.02:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##636DF4 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##636DF4 | 1.00 | 4.18 | 5.02 | 5.02 |
| #FFFFFF | 4.18 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.02 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.02 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0082F9
Deuteranopia (green-blind)
#0076F1
Tritanopia (blue-blind)
#008DA6
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #636df4; /* rgb */ color: rgb(99, 109, 244); /* oklch */ color: oklch(60.0% 0.199 275.4);
Tailwind
colors: {
custom: {
50: '#9c96f9',
500: '#636df4',
950: '#000000',
},
}SCSS
$custom: #636df4; $custom-light: #9c96f9; $custom-dark: #000000;
JSON
{
"hex": "#636df4",
"rgb": {
"r": 99,
"g": 109,
"b": 244
},
"hsl": {
"h": 235.862,
"s": 86.826,
"l": 67.255
},
"oklch": {
"l": 0.59996,
"c": 0.19933,
"h": 275.4
},
"luminance": 0.20122
}Semantic roles & 50–950 ramp
primary
#636DF4
secondary
#F0EDC3
accent
#D402E3
background
#FAF9FF
surface
#F4F2FF
border
#CECCD7
text
#0F0D17
muted
#7F7E85