#3F4F79#3F4F79
#3F4F79 is a dark, moderate blue. Relative luminance 0.080; OKLCH L 43.3% C 0.073 H 267.5°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).
Color values
| HEX | #3F4F79 |
|---|---|
| RGB | rgb(63, 79, 121) |
| HSL | hsl(223, 32%, 36%) |
| HSV | hsv(223, 48%, 47%) |
| CMYK | cmyk(47.9%, 34.7%, 0%, 52.5%) |
| CIE-LAB | lab(34.04, 6.09, -25.87) |
| CIE-LCH | lch(34.04, 26.58, 283.25°) |
| OKLab | oklab(43.35% -0.0032 -0.0727) |
| OKLCH | oklch(43.35% 0.073 267.5) |
| XYZ | xyz(8.2960, 8.0287, 19.1980) |
| Luminance | 0.0803 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Dusk
#4E5481
ΔE00 3.78
Twilight
#4E518B
ΔE00 4.69
Denim Blue
#3B5B92
ΔE00 6.00
Dusk Blue
#26538D
ΔE00 6.34
Dusky Blue
#475F94
ΔE00 6.38
Cobalt (survey)
#1E488F
ΔE00 6.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F4F79 #79693F
analogous
#3F6C79 #3F4F79 #4C3F79
triadic
#3F4F79 #793F4F #4F793F
tetradic
#3F4F79 #793F6C #79693F #3F794C
square
#3F4F79 #793F6C #79693F #3F794C
split-complementary
#3F4F79 #794C3F #6C793F
monochromatic
#151A29 #2A3551 #3F4F79 #5469A1 #798BB9
Accessibility & contrast
On white
8.06
#3F4F79 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.61
#3F4F79 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F4F79
8.06:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F4F79 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F4F79 | 1.00 | 8.06 | 2.61 | 8.06 |
| #FFFFFF | 8.06 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.61 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.06 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#40537B
Deuteranopia (green-blind)
#3A4E78
Tritanopia (blue-blind)
#29585E
Achromatopsia (no color)
#505050
Design tokens & code
CSS
--color: #3f4f79; /* rgb */ color: rgb(63, 79, 121); /* oklch */ color: oklch(43.3% 0.073 267.5);
Tailwind
colors: {
custom: {
50: '#7780a0',
500: '#3f4f79',
950: '#000000',
},
}SCSS
$custom: #3f4f79; $custom-light: #7780a0; $custom-dark: #000000;
JSON
{
"hex": "#3f4f79",
"rgb": {
"r": 63,
"g": 79,
"b": 121
},
"hsl": {
"h": 223.448,
"s": 31.522,
"l": 36.078
},
"oklch": {
"l": 0.43348,
"c": 0.07273,
"h": 267.5
},
"luminance": 0.08029
}Semantic roles & 50–950 ramp
primary
#3F4F79
secondary
#A49570
accent
#AB60C8
background
#F7F7F9
surface
#EDEEF2
border
#C8C9CC
text
#090A0E
muted
#7B7C7E