#663457
Closest named color: Purple Brown (#673A3F). oklch(40.2% 0.086 339.6), rgb(102, 52, 87).
Aa
White text reads best on this color (9.57:1).
About this color
#663457 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.086 and its hue 340°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.048 away. White text reads best on it, at 9.57:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.086) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #663457 |
| RGB | rgb(102, 52, 87) |
| HSL | hsl(318, 32%, 30%) |
| OKLCH | oklch(40.2% 0.086 339.6) |
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 #663457 | 9.57:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #663457 | 2.19:1 | Fails | Lc 12.1 | Not readable |
| #663457 text on white | 9.57:1 | AAA | Lc 91.9 | Preferred for body text |
| #663457 text on black | 2.19:1 | Fails | Lc -10.5 | 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
#F3E5EE
oklch(93.6% 0.019 338.7)
-
Step 200
200
#EAD0E1
oklch(88.4% 0.037 338.7)
-
Step 300
300
#DEB1CE
oklch(80.9% 0.064 339.8)
-
Step 400
400
#CC87B5
oklch(70.8% 0.103 340)
-
Step 500
500
#BD67A3
oklch(63.1% 0.132 339.6)
-
Step 600
600
#A84D8E
oklch(55.7% 0.143 339.7)
-
Step 700
700
#903D79
oklch(49.1% 0.134 339.5)
-
Step 800
800
#753362
oklch(42.7% 0.111 339.8)
-
Step 900
900 (this color)
#663457
oklch(40.2% 0.086 339.6)
-
Step 950
950
#381B2F
oklch(27.1% 0.055 339.9)
#663457 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) | #364058 | 0.089 |
| Deuteranopia (no green cones) | #434856 | 0.081 |
| Tritanopia (no blue cones) | #6B3541 | 0.040 |
| Achromatopsia (no color) | #454545 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #663457
#663457
oklch(40.2% 0.086 339.6)
- #0C5637
#0C5637
oklch(40.2% 0.086 159.3)
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 #663457, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.048
- Brownish Purple #76424E ΔE 0.058
- Velvet #750851 ΔE 0.072
- Grape Purple #5D1451 ΔE 0.073
- Red Purple #820747 ΔE 0.080
- Rich Purple #720058 ΔE 0.080
- Merlot #730039 ΔE 0.084
- Wine #80013F ΔE 0.084
Use #663457 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.