#391B57
Closest named color: Deep Violet (#490648). oklch(29.8% 0.105 303.6), rgb(57, 27, 87).
Aa
White text reads best on this color (14.30:1).
About this color
#391B57 is a dark, moderately saturated purple. In OKLCH its lightness is 30%, its chroma 0.105 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Deep Violet (#490648), ΔE 0.054 away. White text reads best on it, at 14.30:1.
| Hue family | Purples |
| Lightness | dark (30%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Deep Violet (#490648) |
| Black text | 1.46:1 |
| White text | 14.30:1 |
Values
| HEX | #391B57 |
| RGB | rgb(57, 27, 87) |
| HSL | hsl(270, 53%, 22%) |
| OKLCH | oklch(29.8% 0.105 303.6) |
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 #391B57 | 14.30:1 | AAA | Lc -103.7 | Preferred for body text |
| Black text on #391B57 | 1.46:1 | Fails | Lc 0.0 | Not readable |
| #391B57 text on white | 14.30:1 | AAA | Lc 100.7 | Preferred for body text |
| #391B57 text on black | 1.46:1 | 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
#F8F3FF
oklch(97.1% 0.017 304.8)
-
Step 100
100
#EFE4FE
oklch(93.5% 0.037 304.8)
-
Step 200
200
#E2CFFF
oklch(88.5% 0.068 303.1)
-
Step 300
300
#D1ADFF
oklch(80.8% 0.119 304)
-
Step 400
400
#BA7DFF
oklch(70.6% 0.189 303.6)
-
Step 500
500
#AB51FF
oklch(63.1% 0.246 303.7)
-
Step 600
600
#981DF2
oklch(55.6% 0.276 303.5)
-
Step 700
700
#8201D3
oklch(49.1% 0.257 303.5)
-
Step 800
800
#6A10AA
oklch(42.7% 0.212 303.9)
-
Step 900
900
#551C87
oklch(37.7% 0.165 303.3)
-
Step 950
950 (this color)
#391B57
oklch(29.8% 0.105 303.6)
#391B57 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) | #002A59 | 0.083 |
| Deuteranopia (no green cones) | #092A56 | 0.078 |
| Tritanopia (no blue cones) | #332836 | 0.077 |
| Achromatopsia (no color) | #2A2A2A | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #391B57
#391B57
oklch(29.8% 0.105 303.6)
- #263300
#263300
oklch(29.8% 0.074 123.7)
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 #391B57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Violet #490648 ΔE 0.054
- Plum Purple #4E0550 ΔE 0.056
- Eggplant Purple #430541 ΔE 0.057
- Dark Purple #35063E ΔE 0.061
- Royal Purple #4B006E ΔE 0.062
- Deep Purple #36013F ΔE 0.066
- Dark Indigo #1F0954 ΔE 0.071
- Eggplant #380835 ΔE 0.071
Use #391B57 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.