#66277C
Closest named color: Rebecca Purple (#663399). oklch(40.4% 0.145 316.1), rgb(102, 39, 124).
Aa
White text reads best on this color (9.78:1).
About this color
#66277C is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.145 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 0.052 away. White text reads best on it, at 9.78:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.14:1 |
| White text | 9.78:1 |
Values
| HEX | #66277C |
| RGB | rgb(102, 39, 124) |
| HSL | hsl(284, 52%, 32%) |
| OKLCH | oklch(40.4% 0.145 316.1) |
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 #66277C | 9.78:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #66277C | 2.14:1 | Fails | Lc 11.9 | Not readable |
| #66277C text on white | 9.78:1 | AAA | Lc 92.0 | Preferred for body text |
| #66277C text on black | 2.14:1 | Fails | Lc -10.4 | 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 800.
-
Step 50
50
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#F0E5F5
oklch(93.5% 0.024 315.5)
-
Step 200
200
#E6D0EF
oklch(88.5% 0.048 316.2)
-
Step 300
300
#D6B0E6
oklch(80.8% 0.085 315.8)
-
Step 400
400
#C285D9
oklch(70.8% 0.135 316.4)
-
Step 500
500
#B163CF
oklch(63.1% 0.173 315.8)
-
Step 600
600
#9D46BC
oklch(55.7% 0.189 316.1)
-
Step 700
700
#8636A2
oklch(49.1% 0.176 316.1)
-
Step 800
800 (this color)
#66277C
oklch(40.4% 0.145 316.1)
-
Step 900
900
#582A69
oklch(37.6% 0.114 316)
-
Step 950
950
#341A3E
oklch(27.1% 0.072 315.9)
#66277C 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) | #01407F | 0.141 |
| Deuteranopia (no green cones) | #27467A | 0.122 |
| Tritanopia (no blue cones) | #65374E | 0.094 |
| Achromatopsia (no color) | #444444 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66277C
#66277C
oklch(40.4% 0.145 316.1)
- #265600
#265600
oklch(40.3% 0.12 136.1)
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 #66277C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.052
- Purple #800080 ΔE 0.062
- Dark Slate Blue #483D8B ΔE 0.074
- Rich Purple #720058 ΔE 0.076
- Grape Purple #5D1451 ΔE 0.080
- Dark Magenta #8B008B ΔE 0.082
- Indigo #4B0082 ΔE 0.084
- Velvet #750851 ΔE 0.084
Use #66277C 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.