#668BD1#668BD1
#668BD1 is a light, moderate blue. Relative luminance 0.259; OKLCH L 63.9% C 0.114 H 262.4°. Best body text is #000000 at 6.18:1 contrast (WCAG AA passes).
Color values
| HEX | #668BD1 |
|---|---|
| RGB | rgb(102, 139, 209) |
| HSL | hsl(219, 54%, 61%) |
| HSV | hsv(219, 51%, 82%) |
| CMYK | cmyk(51.2%, 33.5%, 0%, 18%) |
| CIE-LAB | lab(57.93, 6.79, -40.00) |
| CIE-LCH | lch(57.93, 40.57, 279.64°) |
| OKLab | oklab(63.94% -0.015 -0.1127) |
| OKLCH | oklch(63.94% 0.114 262.4) |
| XYZ | xyz(26.2169, 25.8916, 63.9253) |
| Luminance | 0.2589 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Soft Blue
#6488EA
ΔE00 2.96
Faded Blue
#658CBB
ΔE00 3.00
Cornflowerblue
#6495ED
ΔE00 4.39
Dark Sky Blue
#448EE4
ΔE00 5.42
Dodger Blue
#3E82FC
ΔE00 5.59
Dusty Blue
#5A86AD
ΔE00 6.00
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#668BD1 #D1AC66
analogous
#66C1D1 #668BD1 #7666D1
triadic
#668BD1 #D1668B #8BD166
tetradic
#668BD1 #D166C1 #D1AC66 #66D176
square
#668BD1 #D166C1 #D1AC66 #66D176
split-complementary
#668BD1 #D17666 #C1D166
monochromatic
#2C4F91 #3A68C0 #668BD1 #95AFDF #C4D2ED
Accessibility & contrast
On white
3.40
#668BD1 on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
6.18
#668BD1 on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #668BD1
6.18:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##668BD1 | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##668BD1 | 1.00 | 3.40 | 6.18 | 6.18 |
| #FFFFFF | 3.40 | 1.00 | 21.00 | 21.00 |
| #000000 | 6.18 | 21.00 | 1.00 | 1.00 |
| ##000000 | 6.18 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#7091D4
Deuteranopia (green-blind)
#6387CF
Tritanopia (blue-blind)
#339AA4
Achromatopsia (no color)
#8B8B8B
Design tokens & code
CSS
--color: #668bd1; /* rgb */ color: rgb(102, 139, 209); /* oklch */ color: oklch(63.9% 0.114 262.4);
Tailwind
colors: {
custom: {
50: '#98acdf',
500: '#668bd1',
950: '#000000',
},
}SCSS
$custom: #668bd1; $custom-light: #98acdf; $custom-dark: #000000;
JSON
{
"hex": "#668bd1",
"rgb": {
"r": 102,
"g": 139,
"b": 209
},
"hsl": {
"h": 219.252,
"s": 53.769,
"l": 60.98
},
"oklch": {
"l": 0.63944,
"c": 0.11367,
"h": 262.4
},
"luminance": 0.25893
}Semantic roles & 50–950 ramp
primary
#668BD1
secondary
#DED0B5
accent
#8B24C1
background
#F9FAFD
surface
#F2F4FB
border
#CCCED4
text
#0E1015
muted
#7E7F83