#403FB9#403FB9
#403FB9 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.9% C 0.186 H 276.2°. Best body text is #FFFFFF at 7.99:1 contrast (WCAG AA passes).
Color values
| HEX | #403FB9 |
|---|---|
| RGB | rgb(64, 63, 185) |
| HSL | hsl(240, 49%, 49%) |
| HSV | hsv(240, 66%, 73%) |
| CMYK | cmyk(65.4%, 65.9%, 0%, 27.5%) |
| CIE-LAB | lab(34.29, 38.50, -64.23) |
| CIE-LCH | lch(34.29, 74.89, 300.94°) |
| OKLab | oklab(44.95% 0.0202 -0.1853) |
| OKLCH | oklch(44.95% 0.186 276.2) |
| XYZ | xyz(12.6460, 8.1467, 46.7956) |
| Luminance | 0.0815 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Ocean Blue
#4F42B5
ΔE00 2.25
Blue Blue
#2242C7
ΔE00 3.35
Blue With A Hint Of Purple
#533CC6
ΔE00 3.47
Sapphire (survey)
#2138AB
ΔE00 4.19
Blurple
#5539CC
ΔE00 4.36
Bluey Purple
#6241C7
ΔE00 5.47
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#403FB9 #B8B93F
analogous
#3F7BB9 #403FB9 #7D3FB9
triadic
#403FB9 #B9403F #3FB940
tetradic
#403FB9 #B93F7B #B8B93F #3FB97D
square
#403FB9 #B93F7B #B8B93F #3FB97D
split-complementary
#403FB9 #B97D3F #7BB93F
monochromatic
#20205E #302F8B #403FB9 #6A69CC #9797DC
Accessibility & contrast
On white
7.99
#403FB9 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#403FB9 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #403FB9
7.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##403FB9 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##403FB9 | 1.00 | 7.99 | 2.63 | 7.99 |
| #FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0056BD
Deuteranopia (green-blind)
#004BB7
Tritanopia (blue-blind)
#005F76
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #403fb9; /* rgb */ color: rgb(64, 63, 185); /* oklch */ color: oklch(44.9% 0.186 276.2);
Tailwind
colors: {
custom: {
50: '#8375cf',
500: '#403fb9',
950: '#000000',
},
}SCSS
$custom: #403fb9; $custom-light: #8375cf; $custom-dark: #000000;
JSON
{
"hex": "#403fb9",
"rgb": {
"r": 64,
"g": 63,
"b": 185
},
"hsl": {
"h": 240.492,
"s": 49.194,
"l": 48.627
},
"oklch": {
"l": 0.44946,
"c": 0.18638,
"h": 276.2
},
"luminance": 0.08148
}Semantic roles & 50–950 ramp
primary
#403FB9
secondary
#C7C78D
accent
#D94FD8
background
#F8F7FC
surface
#F0EDF9
border
#CBC8D2
text
#0C0814
muted
#7D7B82