#663161
Closest named color: Grape Purple (#5D1451). oklch(40.2% 0.101 330.9), rgb(102, 49, 97).
Aa
White text reads best on this color (9.64:1).
About this color
#663161 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.101 and its hue 331°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.066 away. White text reads best on it, at 9.64:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 2.17:1 |
| White text | 9.64:1 |
Values
| HEX | #663161 |
| RGB | rgb(102, 49, 97) |
| HSL | hsl(306, 35%, 30%) |
| OKLCH | oklch(40.2% 0.101 330.9) |
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 #663161 | 9.64:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #663161 | 2.17:1 | Fails | Lc 12.0 | Not readable |
| #663161 text on white | 9.64:1 | AAA | Lc 92.0 | Preferred for body text |
| #663161 text on black | 2.17:1 | 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 900.
-
Step 50
50
#FAF3F9
oklch(97.1% 0.011 330.1)
-
Step 100
100
#F3E5F1
oklch(93.6% 0.022 330.3)
-
Step 200
200
#EAD0E6
oklch(88.6% 0.041 331)
-
Step 300
300
#DEAFD7
oklch(80.9% 0.076 331.4)
-
Step 400
400
#CC84C3
oklch(70.8% 0.12 331.3)
-
Step 500
500
#BD62B4
oklch(63.1% 0.155 331)
-
Step 600
600
#A846A0
oklch(55.6% 0.169 330.8)
-
Step 700
700
#903789
oklch(49.2% 0.157 330.9)
-
Step 800
800
#752E6F
oklch(42.7% 0.13 331)
-
Step 900
900 (this color)
#663161
oklch(40.2% 0.101 330.9)
-
Step 950
950
#381935
oklch(27% 0.065 330.9)
#663161 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) | #2F4063 | 0.100 |
| Deuteranopia (no green cones) | #3E475F | 0.090 |
| Tritanopia (no blue cones) | #6A3544 | 0.055 |
| Achromatopsia (no color) | #454545 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663161
#663161
oklch(40.2% 0.101 330.9)
- #0D572A
#0D572A
oklch(40.2% 0.101 151)
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 #663161, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.066
- Velvet #750851 ΔE 0.067
- Purple Brown #673A3F ΔE 0.069
- Rich Purple #720058 ΔE 0.071
- Brownish Purple #76424E ΔE 0.073
- Red Purple #820747 ΔE 0.081
- Wine #80013F ΔE 0.087
- Merlot #730039 ΔE 0.087
Use #663161 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.