#66376F
Closest named color: Rebecca Purple (#663399). oklch(41.9% 0.105 321), rgb(102, 55, 111).
Aa
White text reads best on this color (8.97:1).
About this color
#66376F is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.105 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.071 away. White text reads best on it, at 8.97:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.105) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.34:1 |
| White text | 8.97:1 |
Values
| HEX | #66376F |
| RGB | rgb(102, 55, 111) |
| HSL | hsl(290, 34%, 33%) |
| OKLCH | oklch(41.9% 0.105 321) |
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 #66376F | 8.97:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #66376F | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #66376F text on white | 8.97:1 | AAA | Lc 90.3 | Preferred for body text |
| #66376F text on black | 2.34:1 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#F0E6F1
oklch(93.6% 0.018 323)
-
Step 200
200
#E4D2E7
oklch(88.5% 0.034 321.4)
-
Step 300
300
#D3B4D9
oklch(80.8% 0.061 320.8)
-
Step 400
400
#BD8CC6
oklch(70.7% 0.099 321.1)
-
Step 500
500
#AC6EB7
oklch(63.1% 0.126 321.4)
-
Step 600
600
#9755A3
oklch(55.6% 0.137 321.3)
-
Step 700
700
#80458C
oklch(49.1% 0.127 320.7)
-
Step 800
800 (this color)
#66376F
oklch(41.9% 0.105 321)
-
Step 900
900
#55325C
oklch(37.8% 0.082 320.8)
-
Step 950
950
#321D36
oklch(26.9% 0.053 321)
#66376F 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) | #2F4671 | 0.096 |
| Deuteranopia (no green cones) | #3C4B6D | 0.086 |
| Tritanopia (no blue cones) | #673E4E | 0.064 |
| Achromatopsia (no color) | #494949 | 0.106 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66376F
#66376F
oklch(41.9% 0.105 321)
- #285A20
#285A20
oklch(41.9% 0.104 141)
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 #66376F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.071
- Dark Slate Blue #483D8B ΔE 0.072
- Brownish Purple #76424E ΔE 0.078
- Twilight #4E518B ΔE 0.082
- Dusk #4E5481 ΔE 0.084
- Purple Brown #673A3F ΔE 0.084
- Light Eggplant #894585 ΔE 0.084
- Velvet #750851 ΔE 0.085
Use #66376F 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.