#636CCC#636CCC
#636CCC is a mid, vivid blue. Relative luminance 0.177; OKLCH L 57.1% C 0.146 H 276.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).
Color values
| HEX | #636CCC |
|---|---|
| RGB | rgb(99, 108, 204) |
| HSL | hsl(235, 51%, 59%) |
| HSV | hsv(235, 51%, 80%) |
| CMYK | cmyk(51.5%, 47.1%, 0%, 20%) |
| CIE-LAB | lab(49.17, 23.27, -51.06) |
| CIE-LCH | lch(49.17, 56.11, 294.50°) |
| OKLab | oklab(57.08% 0.017 -0.1453) |
| OKLCH | oklch(57.08% 0.146 276.7) |
| XYZ | xyz(21.4038, 17.7361, 59.4106) |
| Luminance | 0.1774 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 4.06
Dark Periwinkle
#665FD1
ΔE00 4.67
Royal Blue
#4169E1
ΔE00 5.37
Slate Blue
#6A5ACD
ΔE00 6.46
Light Indigo
#6D5ACF
ΔE00 6.68
Iris
#6258C4
ΔE00 6.83
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#636CCC #CCC363
analogous
#63A1CC #636CCC #8F63CC
triadic
#636CCC #CC636C #6CCC63
tetradic
#636CCC #CC63A1 #CCC363 #63CC8F
square
#636CCC #CC63A1 #CCC363 #63CC8F
split-complementary
#636CCC #CC8F63 #A1CC63
monochromatic
#2C3488 #3C46B6 #636CCC #9197DB #BFC3EA
Accessibility & contrast
On white
4.62
#636CCC on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.55
#636CCC on #000000
AA ✓AA large ✓AAA ✗
Best text color
#FFFFFF on #636CCC
4.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##636CCC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##636CCC | 1.00 | 4.62 | 4.55 | 4.62 |
| #FFFFFF | 4.62 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.55 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.62 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4179D0
Deuteranopia (green-blind)
#3671CA
Tritanopia (blue-blind)
#368192
Achromatopsia (no color)
#757575
Design tokens & code
CSS
--color: #636ccc; /* rgb */ color: rgb(99, 108, 204); /* oklch */ color: oklch(57.1% 0.146 276.7);
Tailwind
colors: {
custom: {
50: '#9696dc',
500: '#636ccc',
950: '#000000',
},
}SCSS
$custom: #636ccc; $custom-light: #9696dc; $custom-dark: #000000;
JSON
{
"hex": "#636ccc",
"rgb": {
"r": 99,
"g": 108,
"b": 204
},
"hsl": {
"h": 234.857,
"s": 50.725,
"l": 59.412
},
"oklch": {
"l": 0.57078,
"c": 0.1463,
"h": 276.7
},
"luminance": 0.17737
}Semantic roles & 50–950 ramp
primary
#636CCC
secondary
#DAD6B1
accent
#CE4EDA
background
#F9F9FD
surface
#F2F1FB
border
#CCCBD4
text
#0E0D15
muted
#7E7E83