#3F33B3#3F33B3
#3F33B3 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.4% C 0.193 H 278.5°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #3F33B3 |
|---|---|
| RGB | rgb(63, 51, 179) |
| HSL | hsl(246, 56%, 45%) |
| HSV | hsv(246, 72%, 70%) |
| CMYK | cmyk(64.8%, 71.5%, 0%, 29.8%) |
| CIE-LAB | lab(31.06, 43.49, -65.97) |
| CIE-LCH | lch(31.06, 79.01, 303.40°) |
| OKLab | oklab(42.44% 0.0285 -0.1904) |
| OKLCH | oklch(42.44% 0.193 278.5) |
| XYZ | xyz(11.3678, 6.6782, 43.3290) |
| Luminance | 0.0668 (WCAG relative) |
| Temperature | cool |
| Family | blue |
Closest named colors
Sapphire (survey)
#2138AB
ΔE00 4.16
Ocean Blue
#4F42B5
ΔE00 4.25
Blue With A Hint Of Purple
#533CC6
ΔE00 4.36
Blurple
#5539CC
ΔE00 4.82
Indigo Blue
#3A18B1
ΔE00 5.30
Blue Blue
#2242C7
ΔE00 5.71
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F33B3 #A7B333
analogous
#3367B3 #3F33B3 #7F33B3
triadic
#3F33B3 #B33F33 #33B33F
tetradic
#3F33B3 #B33367 #A7B333 #33B37F
square
#3F33B3 #B33367 #A7B333 #33B37F
split-complementary
#3F33B3 #B37F33 #67B333
monochromatic
#1D1854 #2E2583 #3F33B3 #6055CE #8D84DC
Accessibility & contrast
On white
8.99
#3F33B3 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#3F33B3 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F33B3
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F33B3 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F33B3 | 1.00 | 8.99 | 2.34 | 8.99 |
| #FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#004EB7
Deuteranopia (green-blind)
#0044B1
Tritanopia (blue-blind)
#00566F
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #3f33b3; /* rgb */ color: rgb(63, 51, 179); /* oklch */ color: oklch(42.4% 0.193 278.5);
Tailwind
colors: {
custom: {
50: '#836ccb',
500: '#3f33b3',
950: '#000000',
},
}SCSS
$custom: #3f33b3; $custom-light: #836ccb; $custom-dark: #000000;
JSON
{
"hex": "#3f33b3",
"rgb": {
"r": 63,
"g": 51,
"b": 179
},
"hsl": {
"h": 245.625,
"s": 55.652,
"l": 45.098
},
"oklch": {
"l": 0.42438,
"c": 0.19251,
"h": 278.5
},
"luminance": 0.06679
}Semantic roles & 50–950 ramp
primary
#3F33B3
secondary
#BFC67C
accent
#DF49D1
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0713
muted
#7D7A82