#3F489D#3F489D
#3F489D is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.2% C 0.137 H 274.8°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).
Color values
| HEX | #3F489D |
|---|---|
| RGB | rgb(63, 72, 157) |
| HSL | hsl(234, 43%, 43%) |
| HSV | hsv(234, 60%, 62%) |
| CMYK | cmyk(59.9%, 54.1%, 0%, 38.4%) |
| CIE-LAB | lab(34.24, 22.98, -47.60) |
| CIE-LCH | lch(34.24, 52.85, 295.77°) |
| OKLab | oklab(44.21% 0.0114 -0.1364) |
| OKLCH | oklch(44.21% 0.137 274.8) |
| XYZ | xyz(10.4511, 8.1250, 32.9093) |
| Luminance | 0.0813 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blueberry
#464196
ΔE00 3.17
Darkslateblue
#483D8B
ΔE00 5.28
Ocean Blue
#4F42B5
ΔE00 5.47
Twilight
#4E518B
ΔE00 5.61
Cobalt
#0047AB
ΔE00 5.71
Sapphire (survey)
#2138AB
ΔE00 5.82
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F489D #9D943F
analogous
#3F779D #3F489D #653F9D
triadic
#3F489D #9D3F48 #489D3F
tetradic
#3F489D #9D3F77 #9D943F #3F9D65
square
#3F489D #9D3F77 #9D943F #3F9D65
split-complementary
#3F489D #9D653F #779D3F
monochromatic
#1C2046 #2D3471 #3F489D #5C65BD #878ECF
Accessibility & contrast
On white
8.00
#3F489D on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#3F489D on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F489D
8.00:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F489D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F489D | 1.00 | 8.00 | 2.63 | 8.00 |
| #FFFFFF | 8.00 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.00 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#1355A0
Deuteranopia (green-blind)
#004D9B
Tritanopia (blue-blind)
#005C6B
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #3f489d; /* rgb */ color: rgb(63, 72, 157); /* oklch */ color: oklch(44.2% 0.137 274.8);
Tailwind
colors: {
custom: {
50: '#7d7aba',
500: '#3f489d',
950: '#000000',
},
}SCSS
$custom: #3f489d; $custom-light: #7d7aba; $custom-dark: #000000;
JSON
{
"hex": "#3f489d",
"rgb": {
"r": 63,
"g": 72,
"b": 157
},
"hsl": {
"h": 234.255,
"s": 42.727,
"l": 43.137
},
"oklch": {
"l": 0.44205,
"c": 0.13685,
"h": 274.8
},
"luminance": 0.08126
}Semantic roles & 50–950 ramp
primary
#3F489D
secondary
#BAB47E
accent
#C755D3
background
#F8F7FB
surface
#EFEDF6
border
#CAC8D0
text
#0A0912
muted
#7C7B81