#427CCE#427CCE
#427CCE is a mid, vivid blue. Relative luminance 0.200; OKLCH L 58.7% C 0.140 H 257.4°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).
Color values
| HEX | #427CCE |
|---|---|
| RGB | rgb(66, 124, 206) |
| HSL | hsl(215, 59%, 53%) |
| HSV | hsv(215, 68%, 81%) |
| CMYK | cmyk(68%, 39.8%, 0%, 19.2%) |
| CIE-LAB | lab(51.87, 7.76, -48.00) |
| CIE-LCH | lch(51.87, 48.63, 279.18°) |
| OKLab | oklab(58.71% -0.0306 -0.1368) |
| OKLCH | oklch(58.71% 0.14 257.4) |
| XYZ | xyz(20.5910, 20.0277, 61.1611) |
| Luminance | 0.2003 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Windows Blue
#3778BF
ΔE00 2.92
Cool Blue
#4984B8
ΔE00 4.36
Deep Sky Blue
#0D75F8
ΔE00 4.42
Steel Blue
#4682B4
ΔE00 4.54
Clear Blue
#247AFD
ΔE00 4.58
Bluish
#2976BB
ΔE00 4.68
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#427CCE #CE9442
analogous
#42C2CE #427CCE #4E42CE
triadic
#427CCE #CE427C #7CCE42
tetradic
#427CCE #CE42C2 #CE9442 #42CE4E
square
#427CCE #CE42C2 #CE9442 #42CE4E
split-complementary
#427CCE #CE4E42 #C2CE42
monochromatic
#1F4377 #2B5FA7 #427CCE #739EDB #A3BFE7
Accessibility & contrast
On white
4.19
#427CCE on #FFFFFF
AA ✗AA large ✓AAA ✗
On black
5.01
#427CCE on #000000
AA ✓AA large ✓AAA ✗
Best text color
#000000 on #427CCE
5.01:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##427CCE | #FFFFFF | #000000 | ##000000 |
|---|---|---|---|---|
| ##427CCE | 1.00 | 4.19 | 5.01 | 5.01 |
| #FFFFFF | 4.19 | 1.00 | 21.00 | 21.00 |
| #000000 | 5.01 | 21.00 | 1.00 | 1.00 |
| ##000000 | 5.01 | 21.00 | 1.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5683D1
Deuteranopia (green-blind)
#4176CC
Tritanopia (blue-blind)
#008F9B
Achromatopsia (no color)
#7C7C7C
Design tokens & code
CSS
--color: #427cce; /* rgb */ color: rgb(66, 124, 206); /* oklch */ color: oklch(58.7% 0.140 257.4);
Tailwind
colors: {
custom: {
50: '#85a1dd',
500: '#427cce',
950: '#000000',
},
}SCSS
$custom: #427cce; $custom-light: #85a1dd; $custom-dark: #000000;
JSON
{
"hex": "#427cce",
"rgb": {
"r": 66,
"g": 124,
"b": 206
},
"hsl": {
"h": 215.143,
"s": 58.824,
"l": 53.333
},
"oklch": {
"l": 0.58714,
"c": 0.14018,
"h": 257.4
},
"luminance": 0.2003
}Semantic roles & 50–950 ramp
primary
#427CCE
secondary
#D4BB98
accent
#A146E2
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0E15
muted
#7D7E83