#660C79
Closest named color: Purple (#800080). oklch(37.8% 0.172 319.3), rgb(102, 12, 121).
Aa
White text reads best on this color (11.08:1).
About this color
#660C79 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.172 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple (#800080), ΔE 0.056 away. White text reads best on it, at 11.08:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Purple (#800080) |
| Black text | 1.89:1 |
| White text | 11.08:1 |
Values
| HEX | #660C79 |
| RGB | rgb(102, 12, 121) |
| HSL | hsl(290, 82%, 26%) |
| OKLCH | oklch(37.8% 0.172 319.3) |
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 #660C79 | 11.08:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #660C79 | 1.89:1 | Fails | Lc 9.8 | Not readable |
| #660C79 text on white | 11.08:1 | AAA | Lc 94.1 | Preferred for body text |
| #660C79 text on black | 1.89:1 | Fails | Lc -8.4 | 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
#FBF2FD
oklch(97.1% 0.017 320.1)
-
Step 100
100
#F5E2FA
oklch(93.5% 0.038 319.2)
-
Step 200
200
#EECBF7
oklch(88.5% 0.07 319.3)
-
Step 300
300
#E5A5F5
oklch(80.9% 0.129 319.5)
-
Step 400
400
#D66EF0
oklch(70.7% 0.206 319.3)
-
Step 500
500
#C938EA
oklch(63.1% 0.263 319.3)
-
Step 600
600
#B100D2
oklch(55.6% 0.268 319.3)
-
Step 700
700
#9600B2
oklch(49.2% 0.237 319.4)
-
Step 800
800
#7B0093
oklch(42.6% 0.206 319.1)
-
Step 900
900 (this color)
#660C79
oklch(37.8% 0.172 319.3)
-
Step 950
950
#3C0C47
oklch(27% 0.109 319.3)
#660C79 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) | #00367C | 0.160 |
| Deuteranopia (no green cones) | #173E77 | 0.152 |
| Tritanopia (no blue cones) | #662846 | 0.105 |
| Achromatopsia (no color) | #3C3C3C | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660C79
#660C79
oklch(37.8% 0.172 319.3)
- #175000
#175000
oklch(37.9% 0.12 139.3)
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 #660C79, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple #800080 ΔE 0.056
- Rich Purple #720058 ΔE 0.065
- Royal Purple #4B006E ΔE 0.066
- Indigo #4B0082 ΔE 0.067
- Grape Purple #5D1451 ΔE 0.071
- Rebecca Purple #663399 ΔE 0.078
- Velvet #750851 ΔE 0.080
- Dark Magenta #8B008B ΔE 0.082
Use #660C79 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.