#331B69#331B69
#331B69 is a dark, vivid violet. Relative luminance 0.025; OKLCH L 30.7% C 0.128 H 291.1°. Best body text is #FFFFFF at 13.99:1 contrast (WCAG AA passes).
Color values
| HEX | #331B69 |
|---|---|
| RGB | rgb(51, 27, 105) |
| HSL | hsl(258, 59%, 26%) |
| HSV | hsv(258, 74%, 41%) |
| CMYK | cmyk(51.4%, 74.3%, 0%, 58.8%) |
| CIE-LAB | lab(17.95, 31.90, -41.48) |
| CIE-LCH | lch(17.95, 52.33, 307.56°) |
| OKLab | oklab(30.67% 0.0458 -0.119) |
| OKLCH | oklch(30.67% 0.128 291.1) |
| XYZ | xyz(4.3063, 2.5074, 13.6189) |
| Luminance | 0.0251 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Midnight Blue
#191970
ΔE00 4.37
Dark Indigo
#1F0954
ΔE00 5.19
Indigo (survey)
#380282
ΔE00 6.08
Royal Purple (survey)
#4B006E
ΔE00 6.44
Darkblue (survey)
#030764
ΔE00 6.60
Dark Royal Blue
#02066F
ΔE00 6.78
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#331B69 #51691B
analogous
#1B2A69 #331B69 #5A1B69
triadic
#331B69 #69331B #1B6933
tetradic
#331B69 #691B2A #51691B #1B695A
square
#331B69 #691B2A #51691B #1B695A
split-complementary
#331B69 #695A1B #2A691B
monochromatic
#0C0618 #1B0E38 #331B69 #4B289A #6234CA
Accessibility & contrast
On white
13.99
#331B69 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.50
#331B69 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #331B69
13.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##331B69 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##331B69 | 1.00 | 13.99 | 1.50 | 13.99 |
| #FFFFFF | 13.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.50 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 13.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#002D6B
Deuteranopia (green-blind)
#002A67
Tritanopia (blue-blind)
#212F40
Achromatopsia (no color)
#2C2C2C
Design tokens & code
CSS
--color: #331b69; /* rgb */ color: rgb(51, 27, 105); /* oklch */ color: oklch(30.7% 0.128 291.1);
Tailwind
colors: {
custom: {
50: '#715995',
500: '#331b69',
950: '#000000',
},
}SCSS
$custom: #331b69; $custom-light: #715995; $custom-dark: #000000;
JSON
{
"hex": "#331b69",
"rgb": {
"r": 51,
"g": 27,
"b": 105
},
"hsl": {
"h": 258.462,
"s": 59.091,
"l": 25.882
},
"oklch": {
"l": 0.30674,
"c": 0.1275,
"h": 291.1
},
"luminance": 0.02508
}Semantic roles & 50–950 ramp
primary
#331B69
secondary
#829E42
accent
#E246B2
background
#F7F5F9
surface
#EDE9F2
border
#C8C5CC
text
#08040D
muted
#7B797E