#66247C
Closest named color: Rebecca Purple (#663399). oklch(40% 0.15 316.4), rgb(102, 36, 124).
Aa
White text reads best on this color (9.96:1).
About this color
#66247C is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.150 and its hue 316°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.054 away. White text reads best on it, at 9.96:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.10:1 |
| White text | 9.96:1 |
Values
| HEX | #66247C |
| RGB | rgb(102, 36, 124) |
| HSL | hsl(285, 55%, 31%) |
| OKLCH | oklch(40% 0.15 316.4) |
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 #66247C | 9.96:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #66247C | 2.10:1 | Fails | Lc 11.6 | Not readable |
| #66247C text on white | 9.96:1 | AAA | Lc 92.4 | Preferred for body text |
| #66247C text on black | 2.10:1 | Fails | Lc -10.1 | 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 900.
-
Step 50
50
#FAF3FC
oklch(97.2% 0.014 318.7)
-
Step 100
100
#F3E4F9
oklch(93.7% 0.032 316.4)
-
Step 200
200
#EACDF5
oklch(88.5% 0.062 316.7)
-
Step 300
300
#DEAAF1
oklch(80.9% 0.112 316.8)
-
Step 400
400
#CC78EA
oklch(70.7% 0.18 316.6)
-
Step 500
500
#BE4DE3
oklch(63.1% 0.23 316.7)
-
Step 600
600
#A923D1
oklch(55.5% 0.25 316.4)
-
Step 700
700
#910FB5
oklch(49.1% 0.232 316.5)
-
Step 800
800
#761593
oklch(42.8% 0.193 316.4)
-
Step 900
900 (this color)
#66247C
oklch(40% 0.15 316.4)
-
Step 950
950
#381344
oklch(27% 0.094 316.9)
#66247C 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) | #003F7F | 0.144 |
| Deuteranopia (no green cones) | #24447A | 0.126 |
| Tritanopia (no blue cones) | #65354D | 0.096 |
| Achromatopsia (no color) | #434343 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66247C
#66247C
oklch(40% 0.15 316.4)
- #255500
#255500
oklch(40% 0.12 136.3)
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 #66247C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.054
- Purple #800080 ΔE 0.060
- Rich Purple #720058 ΔE 0.074
- Dark Slate Blue #483D8B ΔE 0.077
- Grape Purple #5D1451 ΔE 0.078
- Indigo #4B0082 ΔE 0.080
- Dark Magenta #8B008B ΔE 0.081
- Velvet #750851 ΔE 0.083
Use #66247C 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.