#636EFF#636EFF
#636EFF is a mid, highly saturated blue. Relative luminance 0.210; OKLCH L 61.0% C 0.212 H 274.9°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).
Color values
| HEX | #636EFF |
|---|---|
| RGB | rgb(99, 110, 255) |
| HSL | hsl(236, 100%, 69%) |
| HSV | hsv(236, 61%, 100%) |
| CMYK | cmyk(61.2%, 56.9%, 0%, 0%) |
| CIE-LAB | lab(52.97, 38.40, -73.61) |
| CIE-LCH | lch(52.97, 83.02, 297.55°) |
| OKLab | oklab(60.98% 0.0181 -0.2116) |
| OKLCH | oklch(60.98% 0.212 274.9) |
| XYZ | xyz(28.7656, 21.0222, 97.1302) |
| Luminance | 0.2102 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 3.45
Mediumslateblue
#7B68EE
ΔE00 4.84
Cornflower Blue
#5170D7
ΔE00 6.45
Royal Blue
#4169E1
ΔE00 6.77
Lightish Blue
#3D7AFD
ΔE00 6.85
Bright Blue
#0165FC
ΔE00 7.48
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#636EFF #FFF463
analogous
#63BCFF #636EFF #A663FF
triadic
#636EFF #FF636E #6EFF63
tetradic
#636EFF #FF63BC #FFF463 #63FFA6
square
#636EFF #FF63BC #FFF463 #63FFA6
split-complementary
#636EFF #FFA663 #BCFF63
monochromatic
#0010E8 #2635FF #636EFF #A0A7FF #DDE0FF
Accessibility & contrast
On white
4.03
#636EFF on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.20
#636EFF on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #636EFF
5.20:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##636EFF | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##636EFF | 1.00 | 4.03 | 5.20 | 5.20 |
| #FFFFFF | 4.03 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.20 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.20 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0085FF
Deuteranopia (green-blind)
#0078FC
Tritanopia (blue-blind)
#0091AC
Achromatopsia (no color)
#7E7E7E
Design tokens & code
CSS
--color: #636eff; /* rgb */ color: rgb(99, 110, 255); /* oklch */ color: oklch(61.0% 0.212 274.9);
Tailwind
colors: {
custom: {
50: '#9e97ff',
500: '#636eff',
950: '#000000',
},
}SCSS
$custom: #636eff; $custom-light: #9e97ff; $custom-dark: #000000;
JSON
{
"hex": "#636eff",
"rgb": {
"r": 99,
"g": 110,
"b": 255
},
"hsl": {
"h": 235.769,
"s": 100,
"l": 69.412
},
"oklch": {
"l": 0.60983,
"c": 0.21237,
"h": 274.9
},
"luminance": 0.21025
}Semantic roles & 50–950 ramp
primary
#636EFF
secondary
#F5F2C8
accent
#D500E6
background
#FAF9FF
surface
#F4F2FF
border
#CECCD7
text
#100D18
muted
#7F7E86