#637FF2#637FF2
#637FF2 is a light, vivid blue. Relative luminance 0.242; OKLCH L 63.2% C 0.174 H 270.5°. Best body text is #000000 at 5.85:1 contrast (WCAG AA passes).
Color values
| HEX | #637FF2 |
|---|---|
| RGB | rgb(99, 127, 242) |
| HSL | hsl(228, 85%, 67%) |
| HSV | hsv(228, 59%, 95%) |
| CMYK | cmyk(59.1%, 47.5%, 0%, 5.1%) |
| CIE-LAB | lab(56.33, 23.91, -60.99) |
| CIE-LCH | lch(56.33, 65.51, 291.40°) |
| OKLab | oklab(63.24% 0.0014 -0.1743) |
| OKLCH | oklch(63.24% 0.174 270.5) |
| XYZ | xyz(28.7566, 24.2399, 87.1506) |
| Luminance | 0.2424 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower
#6A79F7
ΔE00 2.72
Soft Blue
#6488EA
ΔE00 3.22
Lightish Blue
#3D7AFD
ΔE00 4.19
Dodger Blue
#3E82FC
ΔE00 4.91
Clear Blue
#247AFD
ΔE00 5.87
Cornflower Blue
#5170D7
ΔE00 6.46
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#637FF2 #F2D663
analogous
#63C6F2 #637FF2 #8F63F2
triadic
#637FF2 #F2637F #7FF263
tetradic
#637FF2 #F263C6 #F2D663 #63F28F
square
#637FF2 #F263C6 #F2D663 #63F28F
split-complementary
#637FF2 #F28F63 #C6F263
monochromatic
#1135CA #2B51ED #637FF2 #9BADF7 #D4DCFB
Accessibility & contrast
On white
3.59
#637FF2 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.85
#637FF2 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #637FF2
5.85:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##637FF2 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##637FF2 | 1.00 | 3.59 | 5.85 | 5.85 |
| #FFFFFF | 3.59 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.85 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.85 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#468EF6
Deuteranopia (green-blind)
#2D81F0
Tritanopia (blue-blind)
#0099AD
Achromatopsia (no color)
#878787
Design tokens & code
CSS
--color: #637ff2; /* rgb */ color: rgb(99, 127, 242); /* oklch */ color: oklch(63.2% 0.174 270.5);
Tailwind
colors: {
custom: {
50: '#9ba3f7',
500: '#637ff2',
950: '#000000',
},
}SCSS
$custom: #637ff2; $custom-light: #9ba3f7; $custom-dark: #000000;
JSON
{
"hex": "#637ff2",
"rgb": {
"r": 99,
"g": 127,
"b": 242
},
"hsl": {
"h": 228.252,
"s": 84.615,
"l": 66.863
},
"oklch": {
"l": 0.63235,
"c": 0.17432,
"h": 270.5
},
"luminance": 0.24242
}Semantic roles & 50–950 ramp
primary
#637FF2
secondary
#EFE6C2
accent
#B604E1
background
#FAFAFF
surface
#F4F3FF
border
#CECDD7
text
#0F0F17
muted
#7F7F85