#3F72CC#3F72CC
#3F72CC is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.3% C 0.150 H 260.8°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).
Color values
| HEX | #3F72CC |
|---|---|
| RGB | rgb(63, 114, 204) |
| HSL | hsl(218, 58%, 52%) |
| HSV | hsv(218, 69%, 80%) |
| CMYK | cmyk(69.1%, 44.1%, 0%, 20%) |
| CIE-LAB | lab(48.82, 12.76, -51.74) |
| CIE-LCH | lch(48.82, 53.29, 283.85°) |
| OKLab | oklab(56.29% -0.0238 -0.148) |
| OKLCH | oklch(56.29% 0.15 260.8) |
| XYZ | xyz(18.9624, 17.4491, 59.4837) |
| Luminance | 0.1745 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Cerulean Blue
#056EEE
ΔE00 3.71
Medium Blue
#2C6FBB
ΔE00 3.77
Cornflower Blue
#5170D7
ΔE00 3.77
Windows Blue
#3778BF
ΔE00 3.82
French Blue
#436BAD
ΔE00 4.37
Royal Blue
#4169E1
ΔE00 4.58
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F72CC #CC993F
analogous
#3FB9CC #3F72CC #533FCC
triadic
#3F72CC #CC3F72 #72CC3F
tetradic
#3F72CC #CC3FB9 #CC993F #3FCC53
square
#3F72CC #CC3FB9 #CC993F #3FCC53
split-complementary
#3F72CC #CC533F #B9CC3F
monochromatic
#1E3D72 #2B56A3 #3F72CC #6F96D9 #A0B9E6
Accessibility & contrast
On white
4.68
#3F72CC on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
4.49
#3F72CC on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3F72CC
4.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F72CC | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F72CC | 1.00 | 4.68 | 4.49 | 4.68 |
| #FFFFFF | 4.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 4.49 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 4.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#467BCF
Deuteranopia (green-blind)
#2C6ECA
Tritanopia (blue-blind)
#008795
Achromatopsia (no color)
#747474
Design tokens & code
CSS
--color: #3f72cc; /* rgb */ color: rgb(63, 114, 204); /* oklch */ color: oklch(56.3% 0.150 260.8);
Tailwind
colors: {
custom: {
50: '#849adc',
500: '#3f72cc',
950: '#000000',
},
}SCSS
$custom: #3f72cc; $custom-light: #849adc; $custom-dark: #000000;
JSON
{
"hex": "#3f72cc",
"rgb": {
"r": 63,
"g": 114,
"b": 204
},
"hsl": {
"h": 218.298,
"s": 58.025,
"l": 52.353
},
"oklch": {
"l": 0.56285,
"c": 0.14987,
"h": 260.8
},
"luminance": 0.17451
}Semantic roles & 50–950 ramp
primary
#3F72CC
secondary
#D2BC95
accent
#A947E1
background
#F8F9FD
surface
#F0F2FB
border
#CBCCD4
text
#0C0D15
muted
#7D7E83