#663156
Closest named color: Purple Brown (#673A3F). oklch(39.6% 0.091 340), rgb(102, 49, 86).
Aa
White text reads best on this color (9.81:1).
About this color
#663156 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.091 and its hue 340°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.052 away. White text reads best on it, at 9.81:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.091) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.13:1 |
| White text | 9.81:1 |
Values
| HEX | #663156 |
| RGB | rgb(102, 49, 86) |
| HSL | hsl(318, 35%, 30%) |
| OKLCH | oklch(39.6% 0.091 340) |
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 #663156 | 9.81:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #663156 | 2.13:1 | Fails | Lc 11.5 | Not readable |
| #663156 text on white | 9.81:1 | AAA | Lc 92.4 | Preferred for body text |
| #663156 text on black | 2.13:1 | Fails | Lc -10.0 | 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
#FAF3F7
oklch(97.1% 0.009 341.8)
-
Step 100
100
#F4E5EE
oklch(93.6% 0.02 340.7)
-
Step 200
200
#EBD0E1
oklch(88.5% 0.037 339.8)
-
Step 300
300
#E0B0CF
oklch(81% 0.069 339.9)
-
Step 400
400
#CE85B6
oklch(70.7% 0.109 339.9)
-
Step 500
500
#C064A4
oklch(63.1% 0.141 340)
-
Step 600
600
#AB498F
oklch(55.6% 0.153 340)
-
Step 700
700
#923A79
oklch(49% 0.141 340.1)
-
Step 800
800
#773163
oklch(42.8% 0.117 339.9)
-
Step 900
900 (this color)
#663156
oklch(39.6% 0.091 340)
-
Step 950
950
#391A2F
oklch(27% 0.058 340.7)
#663156 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) | #333E57 | 0.095 |
| Deuteranopia (no green cones) | #424755 | 0.086 |
| Tritanopia (no blue cones) | #6B323F | 0.042 |
| Achromatopsia (no color) | #434343 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663156
#663156
oklch(39.6% 0.091 340)
- #005535
#005535
oklch(39.7% 0.09 159.6)
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 #663156, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.052
- Brownish Purple #76424E ΔE 0.064
- Velvet #750851 ΔE 0.066
- Grape Purple #5D1451 ΔE 0.066
- Rich Purple #720058 ΔE 0.074
- Red Purple #820747 ΔE 0.076
- Merlot #730039 ΔE 0.078
- Wine #80013F ΔE 0.079
Use #663156 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.