#66347A
Closest named color: Rebecca Purple (#663399). oklch(42.1% 0.123 315.4), rgb(102, 52, 122).
Aa
White text reads best on this color (8.98:1).
About this color
#66347A is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.123 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.052 away. White text reads best on it, at 8.98:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.123) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #66347A |
| RGB | rgb(102, 52, 122) |
| HSL | hsl(283, 40%, 34%) |
| OKLCH | oklch(42.1% 0.123 315.4) |
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 #66347A | 8.98:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #66347A | 2.33:1 | Fails | Lc 13.7 | Not readable |
| #66347A text on white | 8.98:1 | AAA | Lc 90.2 | Preferred for body text |
| #66347A text on black | 2.33:1 | Fails | Lc -12.0 | 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 800.
-
Step 50
50
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F4
oklch(93.6% 0.021 313.8)
-
Step 200
200
#E3D2EC
oklch(88.5% 0.04 314.1)
-
Step 300
300
#D3B3E1
oklch(80.9% 0.072 315.5)
-
Step 400
400
#BC8AD1
oklch(70.7% 0.114 315.6)
-
Step 500
500
#AB6BC5
oklch(63.1% 0.146 315.6)
-
Step 600
600
#9650B2
oklch(55.6% 0.161 315.4)
-
Step 700
700
#804199
oklch(49.2% 0.148 315.4)
-
Step 800
800 (this color)
#66347A
oklch(42.1% 0.123 315.4)
-
Step 900
900
#552F64
oklch(37.7% 0.097 315.7)
-
Step 950
950
#321C3A
oklch(27% 0.061 316.6)
#66347A 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) | #23467C | 0.110 |
| Deuteranopia (no green cones) | #344B78 | 0.098 |
| Tritanopia (no blue cones) | #653F52 | 0.080 |
| Achromatopsia (no color) | #494949 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66347A
#66347A
oklch(42.1% 0.123 315.4)
- #2C5B01
#2C5B01
oklch(42.1% 0.123 135.2)
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 #66347A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.063
- Blueberry #464196 ΔE 0.076
- Purple #800080 ΔE 0.079
- Twilight #4E518B ΔE 0.082
- Light Eggplant #894585 ΔE 0.084
- Rich Purple #720058 ΔE 0.088
- Dusk #4E5481 ΔE 0.089
Use #66347A 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.