#663554
Closest named color: Purple Brown (#673A3F). oklch(40.2% 0.082 342.8), rgb(102, 53, 84).
Aa
White text reads best on this color (9.53:1).
About this color
#663554 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.082 and its hue 343°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.042 away. White text reads best on it, at 9.53:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.082) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #663554 |
| RGB | rgb(102, 53, 84) |
| HSL | hsl(322, 32%, 30%) |
| OKLCH | oklch(40.2% 0.082 342.8) |
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 #663554 | 9.53:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #663554 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #663554 text on white | 9.53:1 | AAA | Lc 91.8 | Preferred for body text |
| #663554 text on black | 2.20:1 | Fails | Lc -10.6 | 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 800.
-
Step 50
50
#F9F4F6
oklch(97.2% 0.006 350.8)
-
Step 100
100
#F1E6EC
oklch(93.5% 0.014 343.2)
-
Step 200
200
#E6D3DE
oklch(88.6% 0.026 341.9)
-
Step 300
300
#D8B5C9
oklch(81% 0.048 342.9)
-
Step 400
400
#C38EAD
oklch(70.7% 0.076 343.3)
-
Step 500
500
#B37199
oklch(63.1% 0.098 343.2)
-
Step 600
600
#9D5984
oklch(55.6% 0.105 342.5)
-
Step 700
700
#864870
oklch(49% 0.099 342.1)
-
Step 800
800 (this color)
#663554
oklch(40.2% 0.082 342.8)
-
Step 900
900
#59334B
oklch(37.7% 0.065 342.2)
-
Step 950
950
#341E2C
oklch(26.9% 0.041 341.6)
#663554 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) | #384055 | 0.085 |
| Deuteranopia (no green cones) | #454853 | 0.077 |
| Tritanopia (no blue cones) | #6B3541 | 0.034 |
| Achromatopsia (no color) | #454545 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663554
#663554
oklch(40.2% 0.082 342.8)
- #0C563B
#0C563B
oklch(40.3% 0.082 162.6)
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 #663554, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.042
- Brownish Purple #76424E ΔE 0.054
- Velvet #750851 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.077
- Red Purple #820747 ΔE 0.081
- Merlot #730039 ΔE 0.084
- Wine #80013F ΔE 0.084
- Rich Purple #720058 ΔE 0.085
Use #663554 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.