#645CBF#645CBF
#645CBF is a mid, vivid blue. Relative luminance 0.141; OKLCH L 53.3% C 0.150 H 283.7°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).
Color values
| HEX | #645CBF |
|---|---|
| RGB | rgb(100, 92, 191) |
| HSL | hsl(245, 44%, 55%) |
| HSV | hsv(245, 52%, 75%) |
| CMYK | cmyk(47.6%, 51.8%, 0%, 25.1%) |
| CIE-LAB | lab(44.41, 29.29, -51.20) |
| CIE-LCH | lch(44.41, 58.99, 299.77°) |
| OKLab | oklab(53.26% 0.0356 -0.1458) |
| OKLCH | oklch(53.26% 0.15 283.7) |
| XYZ | xyz(18.4839, 14.1243, 51.0324) |
| Luminance | 0.1412 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Iris
#6258C4
ΔE00 1.54
Slate Blue
#6A5ACD
ΔE00 2.52
Dark Periwinkle
#665FD1
ΔE00 2.88
Light Indigo
#6D5ACF
ΔE00 3.04
Warm Blue
#4B57DB
ΔE00 5.52
Royal Purple
#7851A9
ΔE00 7.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#645CBF #B7BF5C
analogous
#5C86BF #645CBF #955CBF
triadic
#645CBF #BF645C #5CBF64
tetradic
#645CBF #BF5C86 #B7BF5C #5CBF95
square
#645CBF #BF5C86 #B7BF5C #5CBF95
split-complementary
#645CBF #BF955C #86BF5C
monochromatic
#332D73 #463F9F #645CBF #8E88D0 #B8B4E2
Accessibility & contrast
On white
5.49
#645CBF on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.82
#645CBF on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #645CBF
5.49:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##645CBF | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##645CBF | 1.00 | 5.49 | 3.82 | 5.49 |
| #FFFFFF | 5.49 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.82 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.49 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2C6CC2
Deuteranopia (green-blind)
#2766BD
Tritanopia (blue-blind)
#447185
Achromatopsia (no color)
#696969
Design tokens & code
CSS
--color: #645cbf; /* rgb */ color: rgb(100, 92, 191); /* oklch */ color: oklch(53.3% 0.150 283.7);
Tailwind
colors: {
custom: {
50: '#968ad3',
500: '#645cbf',
950: '#000000',
},
}SCSS
$custom: #645cbf; $custom-light: #968ad3; $custom-dark: #000000;
JSON
{
"hex": "#645cbf",
"rgb": {
"r": 100,
"g": 92,
"b": 191
},
"hsl": {
"h": 244.848,
"s": 43.612,
"l": 55.49
},
"oklch": {
"l": 0.53255,
"c": 0.15008,
"h": 283.7
},
"luminance": 0.14125
}Semantic roles & 50–950 ramp
primary
#645CBF
secondary
#CDD0A7
accent
#D354C9
background
#F9F8FD
surface
#F2F0FA
border
#CCCBD3
text
#0E0B14
muted
#7E7C83