#645EF3#645EF3
#645EF3 is a mid, highly saturated blue. Relative luminance 0.172; OKLCH L 57.4% C 0.216 H 278.9°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).
Color values
| HEX | #645EF3 |
|---|---|
| RGB | rgb(100, 94, 243) |
| HSL | hsl(242, 86%, 66%) |
| HSV | hsv(242, 61%, 95%) |
| CMYK | cmyk(58.8%, 61.3%, 0%, 4.7%) |
| CIE-LAB | lab(48.49, 44.21, -74.22) |
| CIE-LCH | lch(48.49, 86.39, 300.78°) |
| OKLab | oklab(57.42% 0.0335 -0.2135) |
| OKLCH | oklch(57.42% 0.216 278.9) |
| XYZ | xyz(25.4307, 17.1840, 86.7534) |
| Luminance | 0.1719 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Mediumslateblue
#7B68EE
ΔE00 4.51
Dark Periwinkle
#665FD1
ΔE00 4.54
Light Indigo
#6D5ACF
ΔE00 5.32
Warm Blue
#4B57DB
ΔE00 5.47
Slate Blue
#6A5ACD
ΔE00 5.48
Purpley
#8756E4
ΔE00 6.48
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#645EF3 #EDF35E
analogous
#5EA2F3 #645EF3 #AE5EF3
triadic
#645EF3 #F3645E #5EF364
tetradic
#645EF3 #F35EA2 #EDF35E #5EF3AE
square
#645EF3 #F35EA2 #EDF35E #5EF3AE
split-complementary
#645EF3 #F3AE5E #A2F35E
monochromatic
#160FC8 #2D25EF #645EF3 #9B97F7 #D2D0FB
Accessibility & contrast
On white
4.73
#645EF3 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.44
#645EF3 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #645EF3
4.73:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##645EF3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##645EF3 | 1.00 | 4.73 | 4.44 | 4.73 |
| #FFFFFF | 4.73 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.44 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.73 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0079F8
Deuteranopia (green-blind)
#006DF0
Tritanopia (blue-blind)
#0083A0
Achromatopsia (no color)
#737373
Design tokens & code
CSS
--color: #645ef3; /* rgb */ color: rgb(100, 94, 243); /* oklch */ color: oklch(57.4% 0.216 278.9);
Tailwind
colors: {
custom: {
50: '#9d8cf8',
500: '#645ef3',
950: '#000000',
},
}SCSS
$custom: #645ef3; $custom-light: #9d8cf8; $custom-dark: #000000;
JSON
{
"hex": "#645ef3",
"rgb": {
"r": 100,
"g": 94,
"b": 243
},
"hsl": {
"h": 242.416,
"s": 86.127,
"l": 66.078
},
"oklch": {
"l": 0.57417,
"c": 0.2161,
"h": 278.9
},
"luminance": 0.17186
}Semantic roles & 50–950 ramp
primary
#645EF3
secondary
#EDEFBE
accent
#E303DA
background
#FAF8FF
surface
#F4F0FF
border
#CECBD7
text
#100C17
muted
#7F7D85