#37178E#37178E
#37178E is a dark, vivid violet. Relative luminance 0.034; OKLCH L 34.4% C 0.176 H 284.6°. Best body text is #FFFFFF at 12.53:1 contrast (WCAG AA passes).
Color values
| HEX | #37178E |
|---|---|
| RGB | rgb(55, 23, 142) |
| HSL | hsl(256, 72%, 32%) |
| HSV | hsv(256, 84%, 56%) |
| CMYK | cmyk(61.3%, 83.8%, 0%, 44.3%) |
| CIE-LAB | lab(21.50, 45.57, -59.24) |
| CIE-LCH | lch(21.50, 74.74, 307.57°) |
| OKLab | oklab(34.41% 0.0443 -0.1708) |
| OKLCH | oklch(34.41% 0.176 284.6) |
| XYZ | xyz(6.7629, 3.3776, 25.8815) |
| Luminance | 0.0338 (WCAG relative) |
| Temperature | cool |
| Family | violet |
Closest named colors
Indigo (survey)
#380282
ΔE00 3.34
Royal
#0C1793
ΔE00 3.87
Indigo
#4B0082
ΔE00 4.79
Cobalt Blue
#030AA7
ΔE00 4.87
Indigo Blue
#3A18B1
ΔE00 4.89
Royal Blue (survey)
#0504AA
ΔE00 5.16
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#37178E #6E8E17
analogous
#17338E #37178E #72178E
triadic
#37178E #8E3717 #178E37
tetradic
#37178E #8E1733 #6E8E17 #178E72
square
#37178E #8E1733 #6E8E17 #178E72
split-complementary
#37178E #8E7217 #338E17
monochromatic
#0E0625 #230E59 #37178E #4B20C3 #6B3FE0
Accessibility & contrast
On white
12.53
#37178E on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
1.68
#37178E on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #37178E
12.53:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##37178E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##37178E | 1.00 | 12.53 | 1.68 | 12.53 |
| #FFFFFF | 12.53 | 1.00 | 21.00 | 1.00 |
| #000000 | 1.68 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 12.53 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#003791
Deuteranopia (green-blind)
#00308C
Tritanopia (blue-blind)
#003C54
Achromatopsia (no color)
#343434
Design tokens & code
CSS
--color: #37178e; /* rgb */ color: rgb(55, 23, 142); /* oklch */ color: oklch(34.4% 0.176 284.6);
Tailwind
colors: {
custom: {
50: '#7a5ab0',
500: '#37178e',
950: '#000000',
},
}SCSS
$custom: #37178e; $custom-light: #7a5ab0; $custom-dark: #000000;
JSON
{
"hex": "#37178e",
"rgb": {
"r": 55,
"g": 23,
"b": 142
},
"hsl": {
"h": 256.134,
"s": 72.121,
"l": 32.353
},
"oklch": {
"l": 0.34406,
"c": 0.17641,
"h": 284.6
},
"luminance": 0.03378
}Semantic roles & 50–950 ramp
primary
#37178E
secondary
#9EC040
accent
#EF39BE
background
#F8F5FB
surface
#EFE9F6
border
#CAC5D0
text
#0A0411
muted
#7C7980