#3F649B#3F649B
#3F649B is a mid, moderate blue. Relative luminance 0.125; OKLCH L 50.2% C 0.098 H 258.1°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #3F649B |
|---|---|
| RGB | rgb(63, 100, 155) |
| HSL | hsl(216, 42%, 43%) |
| HSV | hsv(216, 59%, 61%) |
| CMYK | cmyk(59.4%, 35.5%, 0%, 39.2%) |
| CIE-LAB | lab(42.06, 4.17, -33.92) |
| CIE-LCH | lch(42.06, 34.18, 277.01°) |
| OKLab | oklab(50.15% -0.0202 -0.0959) |
| OKLCH | oklch(50.15% 0.098 258.1) |
| XYZ | xyz(12.5214, 12.5366, 32.7639) |
| Luminance | 0.1254 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Denim (survey)
#3B638C
ΔE00 2.86
Dusky Blue
#475F94
ΔE00 3.20
French Blue
#436BAD
ΔE00 3.23
Denim Blue
#3B5B92
ΔE00 3.25
Mid Blue
#276AB3
ΔE00 4.49
Denim
#1560BD
ΔE00 4.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F649B #9B763F
analogous
#3F929B #3F649B #483F9B
triadic
#3F649B #9B3F64 #649B3F
tetradic
#3F649B #9B3F92 #9B763F #3F9B48
square
#3F649B #9B3F92 #9B763F #3F9B48
split-complementary
#3F649B #9B483F #929B3F
monochromatic
#1C2C44 #2D486F #3F649B #5B82BC #86A3CE
Accessibility & contrast
On white
5.99
#3F649B on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.51
#3F649B on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #3F649B
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F649B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F649B | 1.00 | 5.99 | 3.51 | 5.99 |
| #FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.51 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#4D689D
Deuteranopia (green-blind)
#415F9A
Tritanopia (blue-blind)
#007078
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #3f649b; /* rgb */ color: rgb(63, 100, 155); /* oklch */ color: oklch(50.2% 0.098 258.1);
Tailwind
colors: {
custom: {
50: '#7c8fb9',
500: '#3f649b',
950: '#000000',
},
}SCSS
$custom: #3f649b; $custom-light: #7c8fb9; $custom-dark: #000000;
JSON
{
"hex": "#3f649b",
"rgb": {
"r": 63,
"g": 100,
"b": 155
},
"hsl": {
"h": 215.87,
"s": 42.202,
"l": 42.745
},
"oklch": {
"l": 0.50153,
"c": 0.09805,
"h": 258.1
},
"luminance": 0.12538
}Semantic roles & 50–950 ramp
primary
#3F649B
secondary
#B8A17D
accent
#A056D2
background
#F7F8FB
surface
#EEF0F6
border
#C9CBD0
text
#0A0C11
muted
#7C7D80