#66247A
Closest named color: Rebecca Purple (#663399). oklch(39.9% 0.148 317.3), rgb(102, 36, 122).
Aa
White text reads best on this color (10.00:1).
About this color
#66247A is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.148 and its hue 317°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.057 away. White text reads best on it, at 10.00:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.09:1 |
| White text | 10.00:1 |
Values
| HEX | #66247A |
| RGB | rgb(102, 36, 122) |
| HSL | hsl(286, 54%, 31%) |
| OKLCH | oklch(39.9% 0.148 317.3) |
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 #66247A | 10.00:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #66247A | 2.09:1 | Fails | Lc 11.5 | Not readable |
| #66247A text on white | 10.00:1 | AAA | Lc 92.5 | Preferred for body text |
| #66247A text on black | 2.09:1 | Fails | Lc -9.9 | 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 900.
-
Step 50
50
#FAF3FC
oklch(97.2% 0.014 318.7)
-
Step 100
100
#F3E4F8
oklch(93.7% 0.031 317.7)
-
Step 200
200
#EACDF4
oklch(88.5% 0.061 317.4)
-
Step 300
300
#DEAAF0
oklch(80.9% 0.111 317.2)
-
Step 400
400
#CC79E8
oklch(70.7% 0.176 317.1)
-
Step 500
500
#BE4EE1
oklch(63.1% 0.227 317.1)
-
Step 600
600
#AA25CE
oklch(55.6% 0.246 317.5)
-
Step 700
700
#9212B3
oklch(49.2% 0.229 317.3)
-
Step 800
800
#761691
oklch(42.7% 0.19 317.1)
-
Step 900
900 (this color)
#66247A
oklch(39.9% 0.148 317.3)
-
Step 950
950
#381344
oklch(27% 0.094 316.9)
#66247A 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) | #003E7D | 0.144 |
| Deuteranopia (no green cones) | #264478 | 0.124 |
| Tritanopia (no blue cones) | #65344C | 0.093 |
| Achromatopsia (no color) | #424242 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66247A
#66247A
oklch(39.9% 0.148 317.3)
- #215500
#215500
oklch(39.8% 0.122 137.4)
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 #66247A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.057
- Purple #800080 ΔE 0.060
- Rich Purple #720058 ΔE 0.071
- Grape Purple #5D1451 ΔE 0.075
- Dark Slate Blue #483D8B ΔE 0.078
- Velvet #750851 ΔE 0.080
- Indigo #4B0082 ΔE 0.081
- Dark Magenta #8B008B ΔE 0.082
Use #66247A 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.