#647BCD#647BCD
#647BCD is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.2% C 0.128 H 270.4°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).
Color values
| HEX | #647BCD |
|---|---|
| RGB | rgb(100, 123, 205) |
| HSL | hsl(227, 51%, 60%) |
| HSV | hsv(227, 51%, 80%) |
| CMYK | cmyk(51.2%, 40%, 0%, 19.6%) |
| CIE-LAB | lab(53.26, 14.65, -45.13) |
| CIE-LCH | lch(53.26, 47.45, 287.99°) |
| OKLab | oklab(60.23% 0.0009 -0.1278) |
| OKLCH | oklch(60.23% 0.128 270.4) |
| XYZ | xyz(23.3544, 21.2815, 60.6229) |
| Luminance | 0.2128 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cornflower Blue
#5170D7
ΔE00 4.46
Soft Blue
#6488EA
ΔE00 5.69
Cornflower
#6A79F7
ΔE00 5.76
Lightish Blue
#3D7AFD
ΔE00 6.62
Faded Blue
#658CBB
ΔE00 6.67
Off Blue
#5684AE
ΔE00 7.23
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#647BCD #CDB664
analogous
#64B0CD #647BCD #8164CD
triadic
#647BCD #CD647B #7BCD64
tetradic
#647BCD #CD64B0 #CDB664 #64CD81
square
#647BCD #CD64B0 #CDB664 #64CD81
split-complementary
#647BCD #CD8164 #B0CD64
monochromatic
#2D418A #3B57B8 #647BCD #92A2DC #C1CAEB
Accessibility & contrast
On white
3.99
#647BCD on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.26
#647BCD on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #647BCD
5.26:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##647BCD | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##647BCD | 1.00 | 3.99 | 5.26 | 5.26 |
| #FFFFFF | 3.99 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.26 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.26 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5A84D0
Deuteranopia (green-blind)
#4F7BCB
Tritanopia (blue-blind)
#358D9A
Achromatopsia (no color)
#7F7F7F
Design tokens & code
CSS
--color: #647bcd; /* rgb */ color: rgb(100, 123, 205); /* oklch */ color: oklch(60.2% 0.128 270.4);
Tailwind
colors: {
custom: {
50: '#96a0dc',
500: '#647bcd',
950: '#000000',
},
}SCSS
$custom: #647bcd; $custom-light: #96a0dc; $custom-dark: #000000;
JSON
{
"hex": "#647bcd",
"rgb": {
"r": 100,
"g": 123,
"b": 205
},
"hsl": {
"h": 226.857,
"s": 51.22,
"l": 59.804
},
"oklch": {
"l": 0.6023,
"c": 0.12778,
"h": 270.4
},
"luminance": 0.21283
}Semantic roles & 50–950 ramp
primary
#647BCD
secondary
#DBD2B2
accent
#BC4DDB
background
#F9F9FD
surface
#F2F2FB
border
#CCCCD4
text
#0E0E15
muted
#7E7E83