#3F31B8#3F31B8
#3F31B8 is a dark, highly saturated blue. Relative luminance 0.067; OKLCH L 42.6% C 0.201 H 278.3°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).
Color values
| HEX | #3F31B8 |
|---|---|
| RGB | rgb(63, 49, 184) |
| HSL | hsl(246, 58%, 46%) |
| HSV | hsv(246, 73%, 72%) |
| CMYK | cmyk(65.8%, 73.4%, 0%, 27.8%) |
| CIE-LAB | lab(31.14, 46.20, -68.80) |
| CIE-LCH | lch(31.14, 82.87, 303.88°) |
| OKLab | oklab(42.64% 0.0289 -0.1987) |
| OKLCH | oklch(42.64% 0.201 278.3) |
| XYZ | xyz(11.7972, 6.7131, 46.0122) |
| Luminance | 0.0671 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Blue With A Hint Of Purple
#533CC6
ΔE00 4.18
Blurple
#5539CC
ΔE00 4.48
Ocean Blue
#4F42B5
ΔE00 4.62
Sapphire (survey)
#2138AB
ΔE00 4.67
Indigo Blue
#3A18B1
ΔE00 4.92
Purple Blue
#5D21D0
ΔE00 5.54
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F31B8 #AAB831
analogous
#3166B8 #3F31B8 #8231B8
triadic
#3F31B8 #B83F31 #31B83F
tetradic
#3F31B8 #B83166 #AAB831 #31B882
square
#3F31B8 #B83166 #AAB831 #31B882
split-complementary
#3F31B8 #B88231 #66B831
monochromatic
#1E1757 #2E2488 #3F31B8 #6255D2 #8E85DE
Accessibility & contrast
On white
8.96
#3F31B8 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#3F31B8 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F31B8
8.96:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F31B8 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F31B8 | 1.00 | 8.96 | 2.34 | 8.96 |
| #FFFFFF | 8.96 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.96 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004FBC
Deuteranopia (green-blind)
#0044B6
Tritanopia (blue-blind)
#005772
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #3f31b8; /* rgb */ color: rgb(63, 49, 184); /* oklch */ color: oklch(42.6% 0.201 278.3);
Tailwind
colors: {
custom: {
50: '#846bcf',
500: '#3f31b8',
950: '#000000',
},
}SCSS
$custom: #3f31b8; $custom-light: #846bcf; $custom-dark: #000000;
JSON
{
"hex": "#3f31b8",
"rgb": {
"r": 63,
"g": 49,
"b": 184
},
"hsl": {
"h": 246.222,
"s": 57.94,
"l": 45.686
},
"oklch": {
"l": 0.42642,
"c": 0.20074,
"h": 278.3
},
"luminance": 0.06714
}Semantic roles & 50–950 ramp
primary
#3F31B8
secondary
#C0C87D
accent
#E147D1
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0714
muted
#7D7A82