#3F45A4#3F45A4
#3F45A4 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.2% C 0.151 H 275.6°. Best body text is #FFFFFF at 8.08:1 contrast (WCAG AA passes).
Color values
| HEX | #3F45A4 |
|---|---|
| RGB | rgb(63, 69, 164) |
| HSL | hsl(236, 44%, 45%) |
| HSV | hsv(236, 62%, 64%) |
| CMYK | cmyk(61.6%, 57.9%, 0%, 35.7%) |
| CIE-LAB | lab(33.97, 27.37, -52.25) |
| CIE-LCH | lch(33.97, 58.99, 297.65°) |
| OKLab | oklab(44.16% 0.0147 -0.1501) |
| OKLCH | oklch(44.16% 0.151 275.6) |
| XYZ | xyz(10.8767, 7.9925, 36.0843) |
| Luminance | 0.0799 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blueberry
#464196
ΔE00 2.97
Ocean Blue
#4F42B5
ΔE00 4.07
Sapphire (survey)
#2138AB
ΔE00 4.65
Blue Blue
#2242C7
ΔE00 5.26
Darkslateblue
#483D8B
ΔE00 5.29
Cobalt
#0047AB
ΔE00 5.85
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F45A4 #A49E3F
analogous
#3F77A4 #3F45A4 #6C3FA4
triadic
#3F45A4 #A43F45 #45A43F
tetradic
#3F45A4 #A43F77 #A49E3F #3FA46C
square
#3F45A4 #A43F77 #A49E3F #3FA46C
split-complementary
#3F45A4 #A46C3F #77A43F
monochromatic
#1D204C #2E3278 #3F45A4 #5F65C1 #8B8FD2
Accessibility & contrast
On white
8.08
#3F45A4 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.60
#3F45A4 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F45A4
8.08:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F45A4 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F45A4 | 1.00 | 8.08 | 2.60 | 8.08 |
| #FFFFFF | 8.08 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.60 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.08 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0054A7
Deuteranopia (green-blind)
#004CA2
Tritanopia (blue-blind)
#005C6D
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #3f45a4; /* rgb */ color: rgb(63, 69, 164); /* oklch */ color: oklch(44.2% 0.151 275.6);
Tailwind
colors: {
custom: {
50: '#7e78c0',
500: '#3f45a4',
950: '#000000',
},
}SCSS
$custom: #3f45a4; $custom-light: #7e78c0; $custom-dark: #000000;
JSON
{
"hex": "#3f45a4",
"rgb": {
"r": 63,
"g": 69,
"b": 164
},
"hsl": {
"h": 236.436,
"s": 44.493,
"l": 44.51
},
"oklch": {
"l": 0.44162,
"c": 0.15082,
"h": 275.6
},
"luminance": 0.07993
}Semantic roles & 50–950 ramp
primary
#3F45A4
secondary
#BDBA82
accent
#CD54D4
background
#F8F7FB
surface
#EFEDF7
border
#CAC8D0
text
#0B0912
muted
#7C7B81