#665ECB#665ECB
#665ECB is a mid, vivid blue. Relative luminance 0.151; OKLCH L 54.6% C 0.164 H 282.9°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).
Color values
| HEX | #665ECB |
|---|---|
| RGB | rgb(102, 94, 203) |
| HSL | hsl(244, 51%, 58%) |
| HSV | hsv(244, 54%, 80%) |
| CMYK | cmyk(49.8%, 53.7%, 0%, 20.4%) |
| CIE-LAB | lab(45.83, 32.18, -55.85) |
| CIE-LCH | lch(45.83, 64.45, 299.95°) |
| OKLab | oklab(54.6% 0.0364 -0.1594) |
| OKLCH | oklch(54.6% 0.164 282.9) |
| XYZ | xyz(20.2584, 15.1409, 58.3434) |
| Luminance | 0.1514 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dark Periwinkle
#665FD1
ΔE00 0.95
Slate Blue
#6A5ACD
ΔE00 1.60
Light Indigo
#6D5ACF
ΔE00 2.02
Iris
#6258C4
ΔE00 2.17
Warm Blue
#4B57DB
ΔE00 4.77
Mediumslateblue
#7B68EE
ΔE00 6.97
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#665ECB #C3CB5E
analogous
#5E8CCB #665ECB #9C5ECB
triadic
#665ECB #CB665E #5ECB66
tetradic
#665ECB #CB5E8C #C3CB5E #5ECB9C
square
#665ECB #CB5E8C #C3CB5E #5ECB9C
split-complementary
#665ECB #CB9C5E #8CCB5E
monochromatic
#312B84 #423AB2 #665ECB #928CDA #BEBBE9
Accessibility & contrast
On white
5.21
#665ECB on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.03
#665ECB on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #665ECB
5.21:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##665ECB | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##665ECB | 1.00 | 5.21 | 4.03 | 5.21 |
| #FFFFFF | 5.21 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.03 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.21 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#2270CF
Deuteranopia (green-blind)
#1869C9
Tritanopia (blue-blind)
#40768B
Achromatopsia (no color)
#6C6C6C
Design tokens & code
CSS
--color: #665ecb; /* rgb */ color: rgb(102, 94, 203); /* oklch */ color: oklch(54.6% 0.164 282.9);
Tailwind
colors: {
custom: {
50: '#998cdb',
500: '#665ecb',
950: '#000000',
},
}SCSS
$custom: #665ecb; $custom-light: #998cdb; $custom-dark: #000000;
JSON
{
"hex": "#665ecb",
"rgb": {
"r": 102,
"g": 94,
"b": 203
},
"hsl": {
"h": 244.404,
"s": 51.174,
"l": 58.235
},
"oklch": {
"l": 0.54598,
"c": 0.1635,
"h": 282.9
},
"luminance": 0.15142
}Semantic roles & 50–950 ramp
primary
#665ECB
secondary
#D5D8AD
accent
#DB4DD0
background
#F9F8FD
surface
#F2F0FB
border
#CCCBD4
text
#0E0C15
muted
#7E7D83