#663169
Closest named color: Grape Purple (#5D1451). oklch(40.6% 0.109 325.3), rgb(102, 49, 105).
Aa
White text reads best on this color (9.50:1).
About this color
#663169 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.109 and its hue 325°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.070 away. White text reads best on it, at 9.50:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.109) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #663169 |
| RGB | rgb(102, 49, 105) |
| HSL | hsl(297, 36%, 30%) |
| OKLCH | oklch(40.6% 0.109 325.3) |
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 #663169 | 9.50:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #663169 | 2.20:1 | Fails | Lc 12.3 | Not readable |
| #663169 text on white | 9.50:1 | AAA | Lc 91.6 | Preferred for body text |
| #663169 text on black | 2.20:1 | Fails | Lc -10.7 | 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 800.
-
Step 50
50
#F9F4F9
oklch(97.2% 0.008 325.6)
-
Step 100
100
#F1E6F1
oklch(93.7% 0.019 325.7)
-
Step 200
200
#E6D2E6
oklch(88.6% 0.035 325.9)
-
Step 300
300
#D7B3D7
oklch(80.9% 0.064 326.1)
-
Step 400
400
#C18AC3
oklch(70.6% 0.102 325.4)
-
Step 500
500
#B16CB4
oklch(63.2% 0.13 325.5)
-
Step 600
600
#9C52A0
oklch(55.6% 0.142 325.4)
-
Step 700
700
#854289
oklch(49.1% 0.132 325.2)
-
Step 800
800 (this color)
#663169
oklch(40.6% 0.109 325.3)
-
Step 900
900
#58305A
oklch(37.7% 0.085 325.4)
-
Step 950
950
#341D35
oklch(27.2% 0.054 325.5)
#663169 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) | #2A416B | 0.106 |
| Deuteranopia (no green cones) | #3B4867 | 0.094 |
| Tritanopia (no blue cones) | #683848 | 0.064 |
| Achromatopsia (no color) | #464646 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663169
#663169
oklch(40.6% 0.109 325.3)
- #175820
#175820
oklch(40.6% 0.109 145.4)
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 #663169, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.070
- Velvet #750851 ΔE 0.071
- Rich Purple #720058 ΔE 0.072
- Rebecca Purple #663399 ΔE 0.079
- Dark Slate Blue #483D8B ΔE 0.080
- Purple Brown #673A3F ΔE 0.082
- Brownish Purple #76424E ΔE 0.082
- Purple #800080 ΔE 0.086
Use #663169 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.