#66255B
Closest named color: Grape Purple (#5D1451). oklch(38.1% 0.117 334.8), rgb(102, 37, 91).
Aa
White text reads best on this color (10.60:1).
About this color
#66255B is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.117 and its hue 335°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.041 away. White text reads best on it, at 10.60:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.117) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.98:1 |
| White text | 10.60:1 |
Values
| HEX | #66255B |
| RGB | rgb(102, 37, 91) |
| HSL | hsl(310, 47%, 27%) |
| OKLCH | oklch(38.1% 0.117 334.8) |
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 #66255B | 10.60:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #66255B | 1.98:1 | Fails | Lc 9.9 | Not readable |
| #66255B text on white | 10.60:1 | AAA | Lc 94.0 | Preferred for body text |
| #66255B text on black | 1.98:1 | Fails | Lc -8.6 | 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
#FBF3F9
oklch(97.2% 0.012 334.1)
-
Step 100
100
#F5E4F1
oklch(93.6% 0.025 333.7)
-
Step 200
200
#EECEE6
oklch(88.5% 0.048 334.8)
-
Step 300
300
#E5ACD7
oklch(81% 0.087 335.4)
-
Step 400
400
#D57DC3
oklch(70.7% 0.14 334.9)
-
Step 500
500
#C858B4
oklch(63.2% 0.179 334.9)
-
Step 600
600
#B338A0
oklch(55.6% 0.195 334.7)
-
Step 700
700
#992989
oklch(49.1% 0.181 334.4)
-
Step 800
800
#7D246F
oklch(42.7% 0.15 334.9)
-
Step 900
900 (this color)
#66255B
oklch(38.1% 0.117 334.8)
-
Step 950
950
#3B1635
oklch(27% 0.074 334)
#66255B 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) | #25385D | 0.122 |
| Deuteranopia (no green cones) | #394259 | 0.107 |
| Tritanopia (no blue cones) | #6B293C | 0.059 |
| Achromatopsia (no color) | #3F3F3F | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66255B
#66255B
oklch(38.1% 0.117 334.8)
- #00512B
#00512B
oklch(38.2% 0.095 154.8)
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 #66255B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.041
- Velvet #750851 ΔE 0.046
- Rich Purple #720058 ΔE 0.047
- Merlot #730039 ΔE 0.068
- Red Purple #820747 ΔE 0.069
- Wine #80013F ΔE 0.074
- Purple Brown #673A3F ΔE 0.081
- Plum Purple #4E0550 ΔE 0.082
Use #66255B 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.