#3F43E0#3F43E0
#3F43E0 is a mid, highly saturated blue. Relative luminance 0.105; OKLCH L 49.2% C 0.231 H 272.9°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).
Color values
| HEX | #3F43E0 |
|---|---|
| RGB | rgb(63, 67, 224) |
| HSL | hsl(239, 72%, 56%) |
| HSV | hsv(239, 72%, 88%) |
| CMYK | cmyk(71.9%, 70.1%, 0%, 12.2%) |
| CIE-LAB | lab(38.64, 48.97, -79.71) |
| CIE-LCH | lch(38.64, 93.55, 301.56°) |
| OKLab | oklab(49.15% 0.0117 -0.2306) |
| OKLCH | oklch(49.15% 0.231 272.9) |
| XYZ | xyz(17.5071, 10.4511, 71.6012) |
| Luminance | 0.1045 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue (survey)
#0343DF
ΔE00 3.26
Vibrant Blue
#0339F8
ΔE00 3.45
Blurple
#5539CC
ΔE00 4.34
Blue With A Hint Of Purple
#533CC6
ΔE00 4.36
Blue Blue
#2242C7
ΔE00 4.63
Purpleish Blue
#6140EF
ΔE00 4.64
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F43E0 #E0DC3F
analogous
#3F94E0 #3F43E0 #8C3FE0
triadic
#3F43E0 #E03F43 #43E03F
tetradic
#3F43E0 #E03F94 #E0DC3F #3FE08C
square
#3F43E0 #E03F94 #E0DC3F #3FE08C
split-complementary
#3F43E0 #E08C3F #94E03F
monochromatic
#171A8E #1F23C2 #3F43E0 #7477E9 #A8AAF1
Accessibility & contrast
On white
6.79
#3F43E0 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.09
#3F43E0 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3F43E0
6.79:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F43E0 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F43E0 | 1.00 | 6.79 | 3.09 | 6.79 |
| #FFFFFF | 6.79 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.09 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.79 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0063E5
Deuteranopia (green-blind)
#0053DD
Tritanopia (blue-blind)
#006F8D
Achromatopsia (no color)
#5B5B5B
Design tokens & code
CSS
--color: #3f43e0; /* rgb */ color: rgb(63, 67, 224); /* oklch */ color: oklch(49.2% 0.231 272.9);
Tailwind
colors: {
custom: {
50: '#8b78eb',
500: '#3f43e0',
950: '#000000',
},
}SCSS
$custom: #3f43e0; $custom-light: #8b78eb; $custom-dark: #000000;
JSON
{
"hex": "#3f43e0",
"rgb": {
"r": 63,
"g": 67,
"b": 224
},
"hsl": {
"h": 238.509,
"s": 72.197,
"l": 56.275
},
"oklch": {
"l": 0.49152,
"c": 0.23087,
"h": 272.9
},
"luminance": 0.10453
}Semantic roles & 50–950 ramp
primary
#3F43E0
secondary
#DFDD9C
accent
#EA39EF
background
#F9F7FE
surface
#F2EDFD
border
#CCC8D5
text
#0E0916
muted
#7E7B84