#3F21B2#3F21B2
#3F21B2 is a dark, highly saturated violet. Relative luminance 0.054; OKLCH L 40.1% C 0.208 H 280.9°. Best body text is #FFFFFF at 10.14:1 contrast (WCAG AA passes).
Color values
| HEX | #3F21B2 |
|---|---|
| RGB | rgb(63, 33, 178) |
| HSL | hsl(252, 69%, 41%) |
| HSV | hsv(252, 81%, 70%) |
| CMYK | cmyk(64.6%, 81.5%, 0%, 30.2%) |
| CIE-LAB | lab(27.73, 52.38, -70.86) |
| CIE-LCH | lch(27.73, 88.12, 306.47°) |
| OKLab | oklab(40.07% 0.0395 -0.2045) |
| OKLCH | oklch(40.07% 0.208 280.9) |
| XYZ | xyz(10.6271, 5.3580, 42.5850) |
| Luminance | 0.0536 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Indigo Blue
#3A18B1
ΔE00 1.55
Violet Blue
#510AC9
ΔE00 4.03
True Blue
#010FCC
ΔE00 4.49
Ultramarine
#2000B1
ΔE00 4.85
Mediumblue
#0000CD
ΔE00 5.06
Ultramarine Blue
#1805DB
ΔE00 5.27
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#3F21B2 #94B221
analogous
#214CB2 #3F21B2 #8821B2
triadic
#3F21B2 #B23F21 #21B23F
tetradic
#3F21B2 #B2214C #94B221 #21B288
square
#3F21B2 #B2214C #94B221 #21B288
split-complementary
#3F21B2 #B28821 #4CB221
monochromatic
#1A0E4B #2D177E #3F21B2 #5836DA #836AE3
Accessibility & contrast
On white
10.14
#3F21B2 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.07
#3F21B2 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #3F21B2
10.14:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##3F21B2 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##3F21B2 | 1.00 | 10.14 | 2.07 | 10.14 |
| #FFFFFF | 10.14 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.07 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 10.14 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#0046B6
Deuteranopia (green-blind)
#003CAF
Tritanopia (blue-blind)
#004E6B
Achromatopsia (no color)
#414141
Design tokens & code
CSS
--color: #3f21b2; /* rgb */ color: rgb(63, 33, 178); /* oklch */ color: oklch(40.1% 0.208 280.9);
Tailwind
colors: {
custom: {
50: '#8462ca',
500: '#3f21b2',
950: '#000000',
},
}SCSS
$custom: #3f21b2; $custom-light: #8462ca; $custom-dark: #000000;
JSON
{
"hex": "#3f21b2",
"rgb": {
"r": 63,
"g": 33,
"b": 178
},
"hsl": {
"h": 252.414,
"s": 68.72,
"l": 41.373
},
"oklch": {
"l": 0.40067,
"c": 0.20828,
"h": 280.9
},
"luminance": 0.05359
}Semantic roles & 50–950 ramp
primary
#3F21B2
secondary
#B5C966
accent
#EC3CC7
background
#F8F6FC
surface
#F0EBF9
border
#CBC6D2
text
#0C0513
muted
#7D7A82