#663A5D
Closest named color: Purple Brown (#673A3F). oklch(41.5% 0.08 334.8), rgb(102, 58, 93).
Aa
White text reads best on this color (9.01:1).
About this color
#663A5D is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.080 and its hue 335°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.051 away. White text reads best on it, at 9.01:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.080) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #663A5D |
| RGB | rgb(102, 58, 93) |
| HSL | hsl(312, 28%, 31%) |
| OKLCH | oklch(41.5% 0.08 334.8) |
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 #663A5D | 9.01:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #663A5D | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #663A5D text on white | 9.01:1 | AAA | Lc 90.5 | Preferred for body text |
| #663A5D text on black | 2.32:1 | Fails | Lc -11.8 | 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
#F0E7ED
oklch(93.7% 0.013 337.5)
-
Step 200
200
#E5D3E0
oklch(88.5% 0.026 335.5)
-
Step 300
300
#D4B6CD
oklch(80.9% 0.046 334.1)
-
Step 400
400
#BE8FB3
oklch(70.6% 0.075 334.9)
-
Step 500
500
#AD73A1
oklch(63.1% 0.096 334.4)
-
Step 600
600
#985B8B
oklch(55.6% 0.103 335.1)
-
Step 700
700
#824A76
oklch(49.1% 0.097 335.3)
-
Step 800
800 (this color)
#663A5D
oklch(41.5% 0.08 334.8)
-
Step 900
900
#56344F
oklch(37.6% 0.064 334.6)
-
Step 950
950
#321F2E
oklch(27% 0.039 334.4)
#663A5D 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) | #3A455E | 0.080 |
| Deuteranopia (no green cones) | #454B5C | 0.073 |
| Tritanopia (no blue cones) | #6A3C47 | 0.040 |
| Achromatopsia (no color) | #494949 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663A5D
#663A5D
oklch(41.5% 0.08 334.8)
- #215838
#215838
oklch(41.4% 0.079 155.1)
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 #663A5D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.051
- Brownish Purple #76424E ΔE 0.051
- Dusty Grape #545775 ΔE 0.083
- Dark Mauve #874C62 ΔE 0.084
- Velvet #750851 ΔE 0.085
- Dusk #4E5481 ΔE 0.087
- Grape Purple #5D1451 ΔE 0.087
- Red Purple #820747 ΔE 0.091
Use #663A5D 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.