#643548
Closest named color: Purple Brown (#673A3F). oklch(39.5% 0.072 355.2), rgb(100, 53, 72).
Aa
White text reads best on this color (9.79:1).
About this color
#643548 is a dark, moderately saturated red. In OKLCH its lightness is 39%, its chroma 0.072 and its hue 355°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.025 away. White text reads best on it, at 9.79:1.
| Hue family | Reds |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.072) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.14:1 |
| White text | 9.79:1 |
Values
| HEX | #643548 |
| RGB | rgb(100, 53, 72) |
| HSL | hsl(336, 31%, 30%) |
| OKLCH | oklch(39.5% 0.072 355.2) |
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 #643548 | 9.79:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #643548 | 2.14:1 | Fails | Lc 11.5 | Not readable |
| #643548 text on white | 9.79:1 | AAA | Lc 92.5 | Preferred for body text |
| #643548 text on black | 2.14:1 | 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
#FAF3F6
oklch(97% 0.008 349.2)
-
Step 100
100
#F3E6EA
oklch(93.6% 0.015 356.6)
-
Step 200
200
#EAD1DA
oklch(88.4% 0.03 353.9)
-
Step 300
300
#DEB3C2
oklch(80.9% 0.053 355.5)
-
Step 400
400
#CC8AA3
oklch(70.7% 0.086 355.1)
-
Step 500
500
#BD6C8C
oklch(63.1% 0.109 355.5)
-
Step 600
600
#A85377
oklch(55.7% 0.119 354.9)
-
Step 700
700
#904364
oklch(49.2% 0.111 355)
-
Step 800
800
#753751
oklch(42.6% 0.092 355.3)
-
Step 900
900 (this color)
#643548
oklch(39.5% 0.072 355.2)
-
Step 950
950
#381D27
oklch(27.1% 0.045 356.8)
#643548 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) | #3B3F49 | 0.078 |
| Deuteranopia (no green cones) | #474747 | 0.072 |
| Tritanopia (no blue cones) | #6B333C | 0.023 |
| Achromatopsia (no color) | #444444 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643548
#643548
oklch(39.5% 0.072 355.2)
- #075344
#075344
oklch(39.6% 0.072 174.5)
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 #643548, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.025
- Brownish Purple #76424E ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.081
- Merlot #730039 ΔE 0.082
- Grape Purple #5D1451 ΔE 0.083
- Velvet #750851 ΔE 0.084
- Chestnut #742802 ΔE 0.085
- Bordeaux #7B002C ΔE 0.085
Use #643548 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.