#37155B
Closest named color: Royal Purple (#4B006E). oklch(29% 0.118 301.5), rgb(55, 21, 91).
Aa
White text reads best on this color (14.78:1).
About this color
#37155B is a dark, moderately saturated purple. In OKLCH its lightness is 29%, its chroma 0.118 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 0.056 away. White text reads best on it, at 14.78:1.
| Hue family | Purples |
| Lightness | dark (29%) |
| Chroma | moderately saturated (0.118) |
| Temperature | in between |
| Nearest name | Royal Purple (#4B006E) |
| Black text | 1.42:1 |
| White text | 14.78:1 |
Values
| HEX | #37155B |
| RGB | rgb(55, 21, 91) |
| HSL | hsl(269, 63%, 22%) |
| OKLCH | oklch(29% 0.118 301.5) |
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 #37155B | 14.78:1 | AAA | Lc -104.0 | Preferred for body text |
| Black text on #37155B | 1.42:1 | Fails | Lc 0.0 | Not readable |
| #37155B text on white | 14.78:1 | AAA | Lc 101.1 | Preferred for body text |
| #37155B text on black | 1.42:1 | 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
#E1CFFF
oklch(88.5% 0.068 302.1)
-
Step 300
300
#CEAFFF
oklch(80.9% 0.115 301.7)
-
Step 400
400
#B680FF
oklch(70.7% 0.184 301.5)
-
Step 500
500
#A656FF
oklch(63.1% 0.239 301.5)
-
Step 600
600
#9700FE
oklch(55.6% 0.295 301.5)
-
Step 700
700
#7F00D7
oklch(49.1% 0.26 301.5)
-
Step 800
800
#6900B2
oklch(42.7% 0.226 301.8)
-
Step 900
900
#560F91
oklch(37.7% 0.187 301.7)
-
Step 950
950 (this color)
#37155B
oklch(29% 0.118 301.5)
#37155B 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) | #00275D | 0.084 |
| Deuteranopia (no green cones) | #00275A | 0.085 |
| Tritanopia (no blue cones) | #2F2636 | 0.087 |
| Achromatopsia (no color) | #282828 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37155B
#37155B
oklch(29% 0.118 301.5)
- #263000
#263000
oklch(28.9% 0.07 121.3)
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 #37155B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Purple #4B006E ΔE 0.056
- Deep Violet #490648 ΔE 0.057
- Plum Purple #4E0550 ΔE 0.059
- Dark Purple #35063E ΔE 0.060
- Eggplant Purple #430541 ΔE 0.060
- Dark Indigo #1F0954 ΔE 0.061
- Deep Purple #36013F ΔE 0.062
- Midnight Blue #191970 ΔE 0.070
Use #37155B 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.