#663A5F
Closest named color: Brownish Purple (#76424E). oklch(41.6% 0.082 333), rgb(102, 58, 95).
Aa
White text reads best on this color (8.99:1).
About this color
#663A5F is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.082 and its hue 333°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.053 away. White text reads best on it, at 8.99:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #663A5F |
| RGB | rgb(102, 58, 95) |
| HSL | hsl(310, 28%, 31%) |
| OKLCH | oklch(41.6% 0.082 333) |
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 #663A5F | 8.99:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #663A5F | 2.33:1 | Fails | Lc 13.5 | Not readable |
| #663A5F text on white | 8.99:1 | AAA | Lc 90.4 | Preferred for body text |
| #663A5F text on black | 2.33:1 | Fails | Lc -11.9 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#F0E7EE
oklch(93.7% 0.013 333)
-
Step 200
200
#E4D3E1
oklch(88.5% 0.026 331.6)
-
Step 300
300
#D4B6CE
oklch(80.9% 0.047 332.8)
-
Step 400
400
#BE8FB5
oklch(70.7% 0.076 333.2)
-
Step 500
500
#AD73A3
oklch(63.2% 0.097 333)
-
Step 600
600
#985A8E
oklch(55.6% 0.107 333)
-
Step 700
700
#814A79
oklch(49.1% 0.099 332.5)
-
Step 800
800 (this color)
#663A5F
oklch(41.6% 0.082 333)
-
Step 900
900
#563450
oklch(37.7% 0.065 333.4)
-
Step 950
950
#321F2F
oklch(27% 0.04 332.3)
#663A5F 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) | #394560 | 0.081 |
| Deuteranopia (no green cones) | #454B5E | 0.072 |
| Tritanopia (no blue cones) | #6A3C48 | 0.042 |
| Achromatopsia (no color) | #494949 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663A5F
#663A5F
oklch(41.6% 0.082 333)
- #225936
#225936
oklch(41.7% 0.083 153)
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 #663A5F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.053
- Purple Brown #673A3F ΔE 0.054
- Dusty Grape #545775 ΔE 0.082
- Dark Mauve #874C62 ΔE 0.084
- Velvet #750851 ΔE 0.085
- Dusk #4E5481 ΔE 0.085
- Grape Purple #5D1451 ΔE 0.087
- Twilight #4E518B ΔE 0.091
Use #663A5F 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.