#643A53
Closest named color: Purple Brown (#673A3F). oklch(40.8% 0.069 344), rgb(100, 58, 83).
Aa
White text reads best on this color (9.24:1).
About this color
#643A53 is a dark, muted purple. In OKLCH its lightness is 41%, its chroma 0.069 and its hue 344°. Its hue sits on the warm side of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.034 away. White text reads best on it, at 9.24:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | muted (0.069) |
| Temperature | warm |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #643A53 |
| RGB | rgb(100, 58, 83) |
| HSL | hsl(324, 27%, 31%) |
| OKLCH | oklch(40.8% 0.069 344) |
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 #643A53 | 9.24:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #643A53 | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #643A53 text on white | 9.24:1 | AAA | Lc 91.1 | Preferred for body text |
| #643A53 text on black | 2.27:1 | Fails | Lc -11.2 | 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
#F8F4F6
oklch(97.1% 0.005 345.3)
-
Step 100
100
#F0E7EC
oklch(93.6% 0.012 342.6)
-
Step 200
200
#E5D4DD
oklch(88.6% 0.022 344.3)
-
Step 300
300
#D5B7C7
oklch(81% 0.04 344.7)
-
Step 400
400
#BE91AA
oklch(70.7% 0.064 344.4)
-
Step 500
500
#AD7596
oklch(63% 0.083 343.6)
-
Step 600
600
#985D80
oklch(55.5% 0.09 344)
-
Step 700
700
#824D6C
oklch(49.2% 0.083 344.6)
-
Step 800
800 (this color)
#643A53
oklch(40.8% 0.069 344)
-
Step 900
900
#563649
oklch(37.8% 0.054 343.6)
-
Step 950
950
#32202A
oklch(27% 0.032 345.1)
#643A53 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) | #3D4354 | 0.072 |
| Deuteranopia (no green cones) | #474A52 | 0.067 |
| Tritanopia (no blue cones) | #693A43 | 0.029 |
| Achromatopsia (no color) | #474747 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #643A53
#643A53
oklch(40.8% 0.069 344)
- #1E5640
#1E5640
oklch(40.9% 0.07 164.1)
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 #643A53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.034
- Brownish Purple #76424E ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.083
- Dusty Grape #545775 ΔE 0.087
- Dark Mauve #874C62 ΔE 0.088
- Velvet #750851 ΔE 0.089
- Grape Purple #5D1451 ΔE 0.089
- Red Purple #820747 ΔE 0.092
Use #643A53 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.