#663772
Closest named color: Rebecca Purple (#663399). oklch(42.1% 0.108 319.2), rgb(102, 55, 114).
Aa
White text reads best on this color (8.91:1).
About this color
#663772 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.108 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.066 away. White text reads best on it, at 8.91:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #663772 |
| RGB | rgb(102, 55, 114) |
| HSL | hsl(288, 35%, 33%) |
| OKLCH | oklch(42.1% 0.108 319.2) |
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 #663772 | 8.91:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #663772 | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #663772 text on white | 8.91:1 | AAA | Lc 90.2 | Preferred for body text |
| #663772 text on black | 2.35:1 | Fails | Lc -12.1 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F2
oklch(93.5% 0.019 317.7)
-
Step 200
200
#E4D2E8
oklch(88.5% 0.035 320.1)
-
Step 300
300
#D3B4DB
oklch(80.9% 0.064 319.3)
-
Step 400
400
#BC8CC9
oklch(70.7% 0.102 319)
-
Step 500
500
#AB6EBB
oklch(63.1% 0.13 319.1)
-
Step 600
600
#9655A7
oklch(55.7% 0.14 319)
-
Step 700
700
#80448F
oklch(49.1% 0.132 319.3)
-
Step 800
800 (this color)
#663772
oklch(42.1% 0.108 319.2)
-
Step 900
900
#55315E
oklch(37.7% 0.086 319.4)
-
Step 950
950
#321D37
oklch(27% 0.055 319.7)
#663772 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) | #2D4674 | 0.098 |
| Deuteranopia (no green cones) | #3B4B70 | 0.087 |
| Tritanopia (no blue cones) | #663F4F | 0.068 |
| Achromatopsia (no color) | #4A4A4A | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663772
#663772
oklch(42.1% 0.108 319.2)
- #2A5B1B
#2A5B1B
oklch(42.2% 0.109 139.2)
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 #663772, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.069
- Twilight #4E518B ΔE 0.080
- Brownish Purple #76424E ΔE 0.082
- Blueberry #464196 ΔE 0.083
- Light Eggplant #894585 ΔE 0.083
- Dusk #4E5481 ΔE 0.083
- Velvet #750851 ΔE 0.087
Use #663772 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.