#37175B
Closest named color: Royal Purple (#4B006E). oklch(29.3% 0.115 301), rgb(55, 23, 91).
Aa
White text reads best on this color (14.62:1).
About this color
#37175B is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.115 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Royal Purple (#4B006E), ΔE 0.057 away. White text reads best on it, at 14.62:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.115) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.43:1 |
| White text | 14.62:1 |
Values
| HEX | #37175B |
| RGB | rgb(55, 23, 91) |
| HSL | hsl(268, 60%, 22%) |
| OKLCH | oklch(29.3% 0.115 301) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #37175B | 14.62:1 | AAA | Lc -103.9 | Preferred for body text |
| Black text on #37175B | 1.43:1 | Fails | Lc 0.0 | Not readable |
| #37175B text on white | 14.62:1 | AAA | Lc 101.0 | Preferred for body text |
| #37175B text on black | 1.43:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F7F3FF
oklch(97.1% 0.016 301.2)
-
Step 100
100
#EEE5FF
oklch(93.7% 0.036 301.4)
-
Step 200
200
#E0D0FF
oklch(88.6% 0.066 300.6)
-
Step 300
300
#CDAFFF
oklch(80.9% 0.115 301.1)
-
Step 400
400
#B580FF
oklch(70.6% 0.184 301.1)
-
Step 500
500
#A557FF
oklch(63.2% 0.238 301.1)
-
Step 600
600
#9600FF
oklch(55.6% 0.295 301)
-
Step 700
700
#7E00D8
oklch(49% 0.26 300.9)
-
Step 800
800
#6800B3
oklch(42.7% 0.226 301.1)
-
Step 900
900
#551390
oklch(37.7% 0.183 301.2)
-
Step 950
950 (this color)
#37175B
oklch(29.3% 0.115 301)
#37175B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #00285D | 0.082 |
| Deuteranopia (no green cones) | #00285A | 0.083 |
| Tritanopia (no blue cones) | #2F2737 | 0.085 |
| Achromatopsia (no color) | #292929 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37175B
#37175B
oklch(29.3% 0.115 301)
- #273100
#273100
oklch(29.3% 0.07 121.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #37175B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.057
- Deep Violet #490648 ΔE 0.058
- Plum Purple #4E0550 ΔE 0.059
- Eggplant Purple #430541 ΔE 0.061
- Dark Purple #35063E ΔE 0.062
- Dark Indigo #1F0954 ΔE 0.063
- Deep Purple #36013F ΔE 0.065
- Midnight Blue #191970 ΔE 0.069
Use #37175B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.